Disciplines / Research questions
Physics
691 research topics · 2739 questions
Geometric morphology of complex nanostructures and predictions of electronic structures4 questions
Kernel–Surface Decoupling in 58-Electron ~100-Atom Thiolate-Protected Gold Nanoclusters: Mechanism of Surface-Controlled Relaxation from
Open for about 9 yearsReliable low-level seeding of nanocluster global-minimum searches: transferable DFTB repulsive refits
Open for about 5 yearsGibbs-free-energy stability hierarchy of AlNi nanoclusters: systematic isomer search beyond zero-temperature binding energies
Open for about 5 yearsCoupled composition–geometry structure prediction and synthesis-accessible near-UV gap tuning in mixed MgO–ZnO nanoclusters
Open for about 7 years
Robustness and evolvability of complex biological systems10 questions
Interplay of multiple kinds of robustness with other genotype-phenotype map properties in the evolution of evolvability
Open for about 2 yearsThe sign and mechanism of the mutational robustness–evolvability relationship across genotype–phenotype maps
Open for about 18 yearsA general, computationally demonstrated formal definition and measure of robustness and evolvability for genotype-phenotype systems
Open for about 30 yearsEmpirical genotype networks of gene regulation: quantifying context and method dependence of binding-site networks and extending exhaustive mapping to whole regulatory circuits
Open for about 12 yearsEmpirical validation of the complexity–robustness–evolvability trade-off in natural genotype–phenotype maps, and identification of evolvability-maximizing map architectures
Open for about 9 yearsConditions under which neutral-network structure in many-to-few genotype-phenotype maps determines phenotypic evolvability and robustness
Open for about 9 yearsA quantitative theory of the evolution of evolvability and its relation to mutational robustness in gene-network genotype-phenotype maps
Open for about 17 yearsCompleting the topology-parameter-phenotype map of the yeast TOR signalling circuit and validating its robustness-evolvability organization
Open for about 15 yearsPhenotypic robustness and evolvability, gene-number dependence, and quantitative validation of oscillatory dynamics in experimentally realized synthetic GRN genotype networks
Open for about 3 yearsThe phenotype-level robustness–evolvability paradigm beyond RNA: estimating phenotype frequencies, testing generality, and the evolutionary origin of high evolvability
Open for about 18 years
Non-destructive temperature monitoring during tumor treatment with high-intensity focused ultrasound7 questions
Harmonic-based change in backscattered energy (hCBE) ultrasound thermometry in heterogeneous fat-containing tissue at mid-range frequencies under physiological motion
Open for about 6 yearsIn vivo validation of CT Hounsfield-unit thermometry and nadir/hysteresis-based hyperthermic injury detection for HIFU ablation of fatty tissue
Open for about 12 yearsThermal versus mechanical attribution and tissue-dependent mechanisms of spectral quantitative-ultrasound changes during in-vivo HIFU treatment monitoring
Open for about 10 yearsGeneralizing calibrated backscattered-energy ultrasound thermometry (including harmonic CBE) to heterogeneous, perfused in vivo tissue for closed-loop mild hyperthermia
Open for about 5 yearsUncompensated CBE ultrasound thermometry: a general model of backscatter-energy change during heating, robustness to physiological motion, and calibration with uncertainty bounds for in vivo use
Open for about 14 yearsExperimental validation of speed-of-sound-imaging-guided closed-loop thermostatic HIFU hyperthermia in living tissue
Open for about 4 yearsDeep-learning referenceless PRF-shift MR thermometry in motion-prone organs: extension beyond stationary transcranial targets with temporal-consistency modeling
Open for less than 1 year
High-genus rapidity curves2 questions
High-genus algebraic curves4 questions
Explicit constants, optimal slope, and limit points for linear realizability of prescribed rational-point counts on curves of every genus over finite fields
Scope and extensions of the Calabi–Yau-to-curve correspondence for Feynman integrals: multi-parameter families and the full four-loop banana integral
Ihara-maximal curves: uniqueness of the genus-7 curve over , and existence of Ihara-maximal curves of genus 19 over and genus 24 over
Eisenbud–Harris conjecture in Castelnuovo theory: high-genus curves on low-degree surfaces and the hyperplane-section supporting conjecture
Plasma Oscillation and Terahertz Radiation in High-Temperature Superconducting Materials3 questions
Quantum-regime parametric amplification of terahertz Josephson plasma waves: squeezing of the superconducting phase, single-photon THz devices above the millikelvin regime, and control of fluctuating superconductivity
Open for about 10 yearsExperimental realization of terahertz parametric gain reflectivity and a superconductor-based terahertz amplifier in optically driven cuprates
Open for about 5 yearsComposite two-mode resonant state in BiSrCaCuO mesa terahertz emitters: locking mechanism, phase selection, and mode-control conditions
Open for about 6 years
Mechanism of High-Temperature Superconductivity5 questions
Whether charge-transfer superexchange is the electron-pairing mechanism of cuprate high-temperature superconductors: auditing the Bi2Sr2CaCu2O8+δ Josephson-STM verification and the open components of the mechanism problem
Open for about 40 yearsQuantitative material-specific foundations of polaron-bipolaron superconductivity in cuprates: effective interaction parameters, the BEC-Cooper crossover, and intrinsic pairing symmetry
Open for about 13 yearsValidating the d-density-wave Hartree–Fock account of the cuprate phase diagram: direct DDW detection, glassy domain-wall ground state, gauge-invariant response, and parameter provenance
Open for about 13 yearsMicroscopic identification and experimental validation of the hidden fermion driving high-temperature superconductivity and the pseudogap in cuprates
Open for about 11 yearsMicroscopic origin of the electronic excitations that set the strength and spatial variation of pairing in BiSrCaCuO
Open for about 18 years
Preparation technology for high-temperature superconducting tunnel junctions2 questions
Circuit-layout-uniform ramp formation for high-Tc ramp-edge Josephson junctions: co-optimizing resist reflow, etch-mask thickness, and circuit geometry
Open for about 19 yearsAtomic-scale chemical identity of the interfacial barrier, its formation mechanism, and its link to Josephson properties in La-doped ErBCO/SmBCO ramp-edge junctions
Open for about 23 years
What is the pairing mechanism of high-temperature superconductors?5 questions
Relating the optically extracted electron-boson coupling function to the critical temperature of high- cuprates: d-wave projection with pair-breaking and the underdoped pseudogap regime
Open for about 17 yearsPairing glue in electron-doped : direct verification of the spin-fluctuation assignment, the origin of the electronic bosonic spectrum, and the competing order
Open for about 9 yearsMicroscopic identification of the electronic bosonic 'glue' and its interplay with phonons in high-Tc cuprate superconductors
Open for about 14 yearsSpin-background-mediated pairing of charge carriers in a two-dimensional doped Mott insulator: microscopic mechanism and finite-density fate
Open for about 39 yearsGlue or no glue: retarded versus unretarded d-wave pairing in the t-J-V model and the screening role of the no-double-occupancy constraint
Open for about 18 years
Vortex glass phase in high-temperature superconductors7 questions
Static high-field vortex phase of disordered high-Tc superconductors: equilibrium elastic vortex glass or current-induced ordering of a plastically pinned state?
Open for about 18 yearsValidation and transferability of multiharmonic AC-susceptibility fingerprints for identifying the vortex-glass phase in type-II superconductors
Open for about 18 yearsKinetic arrest versus thermodynamic vortex-glass transition in disordered YBa2Cu3O7−δ: the microscopic origin of the anomalously fragile vortex liquid
Open for about 19 yearsVortex configurations, oblique-field theory, and glassy phases of an ordered Bose glass: a layered superconductor with a dense periodic triangular columnar-pin lattice
Open for about 3 yearsAsymptotic aging dynamics, effective temperature, and experimental verification of the vortex glass in disordered high-temperature superconductors
Open for about 20 yearsMicroscopic origin and ultimate high-field ground state of the exotic vortex states in the quasi-two-dimensional superconductor (TBA⁺)ₓFeSe
Open for less than 1 yearNature of the vortex-liquid to vortex-solid transition and vortex-glass critical scaling in highly anisotropic Bi-2223 superconductors
Open for about 17 years
Opacity of radiation from high-temperature dense materials7 questions
Stark line broadening at stellar-interior conditions and the missing solar opacity
Open for about 10 yearsValidated first-principles radiative opacity of warm dense hydrogen: extending the opacity table beyond the degenerate regime and benchmarking it experimentally
Open for about 11 yearsExperimentally validated first-principles determination of the free-free opacity of aluminum from the cold solid to warm dense matter (15–73 eV)
Open for about 8 yearsNon-LTE-capable super-transition-array modeling of the hot dense germanium buried-layer benchmark: the 1.4-1.9 keV emission disparity, inexpensive non-LTE opacity routes, and the STA/SCO-RCG Planck-mean discrepancy
Open for about 6 yearsExperimental demonstration and theoretical understanding of expansion opacity in laboratory conditions
Open for about 5 yearsSelf-consistent free-electron chemical potential in the Starrett–Saumon ion-correlation average-atom model and the magnitude of ion-correlation effects on plasma opacities
Open for about 7 yearsReducing National Ignition Facility iron x-ray transmission uncertainties to the ±0.02 absolute level required to adjudicate the Z-facility iron-opacity discrepancy at 180–195 eV
Open for about 9 years
Structure of high-temperature dense materials6 questions
Validity domain of the VAMPIRES variational average-atom model in the strongly coupled, strong-overlap regime of dense plasmas
Open for about 3 yearsModel-independent ion structure and ion-acoustic dynamics of shock-compressed warm dense lithium from inelastic x-ray scattering
Open for about 17 yearsValidated reduced models for the structure and free-electron response of warm dense matter in x-ray Thomson scattering diagnostics
Open for about 16 yearsIonic structure of warm dense matter in bonding and molecular regimes: the open core of the self-consistent average-atom method
Open for about 12 yearsQuantified-accuracy extension of the average-atom two-component-plasma (AA+TCP) model of warm dense matter to strong ionic coupling
Open for about 12 yearsUnambiguous experimental determination of the ionic static structure factor from elastic x-ray Thomson scattering features in warm dense matter
Open for about 5 years
Lattice relations and CFT operators4 questions
Full finite-size expansion of the lattice involutive charges of critical lattice models and the generality of the lattice-continuum correspondence of the Baxter Q-operator integrable structure
Completing the lattice-to-CFT fermionic correspondence of the critical XXZ model: all-levels proof of the determinant three-point conjecture, the non-diagonal case, and the second screening family
Sufficiency of the difference and inversion relations for the operator Faddeev equation in the simple Weyl algebra
Completing the BLZ conjectures for quantum KdV monster potentials: degenerate-partition perturbation series and residual completeness regimes
Nonperturbative studies of lattice QCD6 questions
Controlled, fit-free extraction of the phase factor from LLR density-of-states data in finite-density quantum field theory
Open for about 9 yearsFirst-principles completion of the electroweak radiative correction to semileptonic kaon decays: the full physical-point lattice QCD computation and the unknown chiral contributions to
Open for about 5 yearsQCD crossover line and critical endpoint at baryon chemical potentials beyond the reach of analytic continuation ( MeV)
Open for about 28 yearsOut-of-equilibrium chiral magnetic effect in QCD: first-principles determination of the real-time current response to chiral imbalance
Open for about 14 yearsContinuum-limit, large-volume, and strangeness-neutral extensions of direct canonical-ensemble lattice QCD at finite baryon density with physical quark masses
Open for less than 1 yearHigher-order coefficients, convergence domain, and validation of the T'-expansion scheme for the lattice QCD equation of state at finite baryon chemical potential
Open for about 5 years
The continuum limit of lattice models3 questions
Conjectured lattice-to-continuum operator identity and spectral classification for the -invariant inhomogeneous six-vertex model (Bazhanov–Kotousov–Koval–Lukyanov, 2021)
Conformally covariant scaling limits of energy and spin correlations in non-integrable planar Ising models
Microscopic origin, universality, and deformed correlation functions of the deformation on the light-cone lattice
Lattice paths and nonintersecting paths2 questions
The lattice gas–Ising mapping1 questions
Anisotropic Bethe-lattice models2 questions
Anisotropy parameter 3 questions
Edge fluctuations of the melting domain wall in the XXZ spin-1/2 chain at nonzero anisotropy: the Saenz–Tracy–Widom conjecture
Open for about 4 yearsAnalytic-in-anisotropy condensed Bethe solutions for the symmetric six-vertex model up to exact half filling
Open for about 5 yearsNon-perturbative arrow correlations of the critical six-vertex model: exact staggered exponents and the Thirring scaling limit beyond small anisotropy
Anisotropic two-dimensional Ising model1 questions
Function-related nonlinear protein conformational changes10 questions
Computing and validating nonlinear transition pathways of alternating-access membrane transporters
Open for about 2 yearsMolecular Mechanism and Generality of Dual-Excitation Nonlinear Light-Intensity Gating in the BLUF Photosensor BlrP1
Open for about 8 yearsMechanism of voltage sensing and electromechanical coupling in mammalian prestin (SLC26A5): voltage-sensor identity and the functional roles of the evolutionarily remodeled structural elements
Open for about 25 yearsDoes the internal conformational state of CFTR control the external electrostatic free-energy landscape that steers cytosolic ATP toward its nucleotide-binding sites?
Open for about 2 yearsPhysical validity of the nonlinear elastic-network relaxation scenarios for functional conformational motions in the motor proteins KIF1A and myosin V
Open for about 16 yearsEstablishing objective, statistically calibrated criteria for interpreting function-related conformational changes in proteins: the open agenda of Rashin, Rashin and Jernigan (2010)
Open for about 16 yearsQuantitative de-idealization of genericity theorems for binding-induced conformational change and allosteric regulation in proteins
Open for about 7 yearsPhysical origin, ligand modulation, and predictive parametrization of sequence-specific residue contact energies in allosteric proteins
Open for about 15 yearsCompleting the designed elastic-network machine framework for molecular machines: thermodynamic energetics, prescribed multi-soft-mode design, single-molecule validation, and physical realization
Open for about 19 yearsOpen problems of the automaton model of protein dynamics: reconstructing the protein automaton from output data and characterizing the class of protein automata
Open for about 9 years
Conjugate modulus transformations4 questions
Direct Siegel-style residue-calculus proofs of the modular inversion laws of Jacobi's theta functions and
Jacobi imaginary transformation counterparts of the mixed-pair circular summation formulas for theta functions (Cai–Bi–Luo Theorems 4 and 5)
A complete algorithmic theory of modular transformations for elliptic Feynman integrals: invariant function classes, fibre transformation matrices, ansatz classification, and analytic boundary-data transport
Analytic completion of the elliptic-integral representation of anisotropic Ising correlations: global validity of the third-kind duality identity, connection constants, and constructive operator factorization
Conformal weights4 questions
Logarithmic T- and Y-systems for the general Kac boundary conditions of the logarithmic minimal models
Boundary conformal data of the dilute loop model at the percolation point: integrable boundary conditions beyond the sine solution and the missing weight
Analytic identification of the scaling-limit boundary conformal field theory of quantum-group-invariant spin chains
Open problems in the lattice regularisation of a non-compact boundary conformal field theory: black-hole brane identification, the lattice-to-continuum map, analytic boundary RG flows, and the free-boundary antiferromagnetic Potts Hamiltonian
Study on atomic coherence effects in solid media3 questions
Full-contrast all-optical coherent population trapping/EIT control and microwave-free sensing with divacancy spin ensembles in silicon carbide
Open for about 11 yearsQuantitative low- and zero-field modeling and mitigation of superhyperfine-induced photon-echo collapse in Er:YSiO
Open for about 6 yearsRobust, quantitatively understood, and scalable adiabatic population transfer (STIRAP and bright STIRAP) in rare-earth-ion-doped solids
Open for about 17 years
Electrically pumped solid-state organic semiconductor lasers4 questions
Validated modeling and experimental verification of the OLED-pumped organic laser diode: threshold, pulsed-to-quasi-CW operation, and modulation-limited data transmission
Open for about 2 yearsElectrically pumped lasing in red-emitting organic semiconductors via TADF-assisted triplet-to-singlet upconversion (the current-injection red organic laser)
Open for about 5 yearsPhysical Origin of Current-Driven Spectral Narrowing and the Conditions for Electrically Driven Stimulated Emission in BP3T Single-Crystal Organic Light-Emitting Transistors
Open for about 17 yearsElectrically pumped lasing in organic semiconductors: threshold, modal gain, and conversion efficiency of the single-crystal microcavity OLED platform
Open for about 30 years
Orbital magnetism of solid materials6 questions
Quantitative ab initio prediction of current-induced orbital magnetization (the orbital Edelstein effect) in noncentrosymmetric materials
Open for about 5 yearsMicroscopic origin and quantitative spectroscopic theory of the large unquenched V orbital moment in the van der Waals ferromagnet VI
Open for about 3 yearsLocalized versus itinerant orbital magnetization in crystals: first-principles evaluation and magneto-optical extraction of the self-rotation and itinerant-circulation decomposition
Open for about 18 yearsTopological orbital ferromagnetism in γ-FeMn beyond the virtual-crystal approximation: disorder-inclusive theory, chirality expansion of the Hall response, inverse effects, and experimental detection
Open for about 9 yearsGiant unquenched orbital moments in two-dimensional magnets: robust first-principles prediction and materials discovery beyond octahedral coordination, up to the quantum
Open for about 1 yearMeasurability and density-functional incorporation of the large nonlocal (itinerant) contributions to orbital magnetization in ferromagnetic insulating perovskite transition-metal oxides
Open for about 12 years
Inertial Confinement Fusion Ignition and Supernova Explosion9 questions
The Ni problem in core-collapse supernova explosions: testing the neutrino-driven mechanism against observed nickel masses, from Type II to stripped-envelope supernovae
Open for about 9 yearsExtending the Hamiltonian thin-shell theory of Rayleigh–Taylor degradation of ICF implosion performance: 3D asymmetries, the acceleration/ablation phase, and ignition-coupled hot-spot dynamics
Open for about 1 yearA general predictive theory of Rayleigh–Taylor instability growth and its transition to turbulent mixing at converging interfaces
Open for about 72 yearsGenerality and limits of hydrodynamic scale invariance in laser-driven high-energy-density implosion experiments
Open for about 6 yearsFeasibility of the double-cone ignition scheme for inertial confinement fusion under full multi-dimensional physics and integrated experimental demonstration
Open for about 5 yearsFinal explosion energies and robustness of delayed, SASI-aided neutrino-driven core-collapse supernova explosions
Open for about 19 yearsFinal outcomes of high-compactness core-collapse supernova progenitors after shock revival: successful explosions, fallback, and black-hole formation
Open for about 15 yearsDefinitive first-principles prediction of core-collapse supernova outcomes in three-dimensional general relativity with full Boltzmann neutrino transport
Open for about 14 yearsRobustness of the experimentally inferable inertial confinement fusion ignition threshold under operational definitions and highly distorted implosions
Open for about 7 years
Propagation characteristics of light waves at metal-based interfaces4 questions
Microscopic origin, unbiased measurement, and predictive control of grain-boundary scattering losses of surface plasmon polaritons in polycrystalline gold films
Open for about 17 yearsHighly confined ultraviolet surface plasmon polaritons on nanostructured metal interfaces: interface-topology design, low-loss material screening, and experimental realization
Open for about 8 yearsRealistic-loss, fabrication-tolerance, and bandwidth limits of gradient-refractive-index-medium plasmonic bends and adapters at visible wavelengths
Open for about 9 yearsValidated modal description of surface plasmon polaritons at the planar interface of a metal and an ambichiral nanostructured medium
Open for about 12 years
Spectral invariance and polarization invariance in light propagation4 questions
Spectral-density and polarization propagation laws for stochastic electromagnetic beams beyond linear, deterministic, z-uniform paraxial gain/absorbing media
Open for less than 1 yearClassification of (3+1)D propagation-invariant space-time wave packets in free space: extension of the 10-class scheme and emergence of new classes
Open for about 7 yearsBroadband extension of the cross-spectral purity reduction formulas for intensity-normalized coherence Stokes parameters of nonstationary electromagnetic beams
Open for about 3 yearsPurity of partial polarization for nonparaxial and broadband electromagnetic fields: invariance conditions
Open for about 13 years
The question of the nature of light5 questions
Extending the photon wave function formalism to lossy, bounded, and spatially nonlocal media
Open for about 10 yearsQuantum-controlled settings in Bell-inequality experiments: formulation, statistical signatures, and no-go consequences of extending the quantum delayed-choice framework
Open for about 15 yearsWeyl–Wigner–Moyal phase-space formalism for the photon built on the momentum and the commuting position operators
Open for about 6 yearsExperimental verification and generalization of the geometric-phase–which-path complementarity relation of the photon
Open for about 2 yearsBreaking the plasma-photon-mass degeneracy in fast radio burst dispersion to constrain the photon rest mass
Open for about 10 years
The first calibration standard in optoelectronic device testing2 questions
Reducing the mechanical-attenuator calibration uncertainty to ≤0.1% in the 1 mW dissemination chain of the State Working Standard of average optical power (dissemination directly from the primary standard GET 170-2011)
Open for about 10 yearsRealizing the optical watt by radiation pressure: laser power metrology from below a few watts to the kilogram-independent 100 kW regime at cryogenic-radiometer-level uncertainty
Open for about 7 years
Quantum states of cold atoms in optical superlattices10 questions
Robustness, decoherence, and scaling of AC-drive-controlled atom movement and entanglement on an optical superlattice: the untested performance envelope of the Zhang–Yang (2019) protocol
Open for about 6 yearsExperimental realization of chiral magnetic dynamics of the massive Schwinger model with ultracold fermions in an optical superlattice
Open for less than 1 yearInteraction-induced pair superfluid of bosonic atoms in optical superlattices: thermodynamic-limit pair-correlator exponent, universality classes, phase boundaries, and stability beyond one dimension
Open for about 19 yearsLocal relaxation of the density-wave quench in the one-dimensional Bose-Hubbard model at finite interaction: Gibbs versus generalized Gibbs ensemble, the effective-temperature map, and the long-time momentum distribution
Open for about 18 yearsValidity and extensions of three-dimensional atom localization in the polychromatic optical superlattice
Open for about 15 yearsInteraction effects and correlated fractional quantum Hall phases in synthetic-magnetic-field optical lattices
Open for about 22 yearsTrap effects on the quantum phases and correlation signatures of ultracold bosons in a two-dimensional optical superlattice
Open for about 19 yearsLocalization mechanisms in a finite harmonically confined optical superlattice: topological classification beyond trap dominance and parameter-general dynamical readout
Open for less than 1 yearExperimental identification of interwell coherence and off-diagonal correlations in the superfluid-Mott-insulator transition of a one-dimensional optical lattice with double-well confinement
Open for about 19 yearsDefect-production scaling for linear quenches across an extended gapless superfluid region in the one-dimensional superlattice Bose-Hubbard model
Open for about 10 years
Optical clocks: defining the second with light6 questions
Completing the specification of an ensemble (multi-transition) definition of the SI second
Open for about 6 yearsClosed-loop conditions for squeezing-enhanced optical atomic clocks: anti-squeezing, alternative protocols, and dead-time-free multi-ensemble architectures
Open for about 6 yearsMid- systematic uncertainty for the optical clock and inter-institute validation of optical-clock accuracy
Open for less than 1 yearCorrelated reference standards, adaptive weighting, and multi-laboratory extension for realizing an SI second defined by the geometric mean of multiple clock transitions
Open for less than 1 yearRoutine entanglement-enhanced optical clock operation below the standard quantum limit, and scaling entanglement-enhanced comparisons to independent clocks
Open for about 3 yearsPushing optical lattice clock systematic uncertainty below : blackbody-radiation shift control, dynamic-correction modeling, collective radiative effects, and tunneling at shallow lattice depth
Open for about 2 years
Do photons have rest mass?5 questions
Robust photon-mass bound from Schumann resonances with realistic ionospheric modeling
Open for about 55 yearsWhich assumption must fail: reconciling a non-zero photon mass with observed TEM propagation in coaxial cables
Open for about 3 yearsPhoton-mass reach of solar-system Shapiro time delays: full orbit-determination re-fit with a free photon mass and quantified sensitivity limits
Open for about 2 yearsExtending the pulsar spin-down bound on the photon mass beyond AR Scorpii toward the g regime
Open for about 9 yearsVortex neutralization of the Proca field in Higgs-mechanism photon mass: vortex-network cosmology, primordial magnetogenesis, and the survival of astrophysical photon-mass bounds
Open for about 23 years
Experimental Testing of the Equivalence Principle in General Relativity5 questions
Disentangling composition-dependent weak-equivalence-principle violation from distance-dependent effective Earth gravity in satellite laser-ranging tests
Open for about 7 yearsTesting the weak equivalence principle with an entangled two-species test mass: predicting and measuring whether entanglement affects free fall
Open for about 8 yearsQuantum-clock tests of the equivalence principle beyond the de Broglie-gauge phase, and the extension to active-gravity regimes in matter-wave interferometry
Open for about 11 yearsControlling propagation and gravitational-potential systematics in polarimetric tests of the Einstein equivalence principle: from upper limits on to a systematics-controlled, theory-discriminating measurement
Open for about 6 yearsImproving laboratory sensitivity to short-range equivalence-principle-violating interactions: beyond the Rot-Wash floor
Open for about 26 years
Orbital Diffusion and Solar System Stability10 questions
From resonance-web statistics to a quantitative theory of chaos in the inner Solar System
Open for about 4 yearsAnomalous diffusion exponents in Solar System chaotic transport: dynamical origin and genericity
Open for about 4 yearsFirst-principles stochastic theory of the chaotic destabilization of the inner Solar System
Open for about 5 yearsDetermining the actual chaoticity of the outer Solar System and the origin of its fine-scale dynamical structure
Open for about 19 yearsDynamical origin of Mercury's subdiffusive secular evolution: why the secular eigenfrequency subdiffuses, why its boundaries are asymmetric, and what produces intermittency
Open for about 3 yearsCalibrating the probability of destabilization of the inner Solar System within 5 Gyr, and the conditional risk of a planetary collision with Earth
Open for about 17 yearsDynamical mechanism and generality of one-dimensional advection–diffusion in the long-term chaotic evolution of planetary systems
Open for about 3 yearsStatistical convergence of long-term N-body simulations beyond the secular Solar System: minimum timesteps for resonant planetary architectures
Open for about 1 yearConverged, validated, and physically interpretable long-term instability statistics for the Solar System
Open for about 18 yearsA quantitative theory linking quasi-integral diffusion to the instability times of the inner Solar System
Open for about 3 years