Preprint points to a logarithmic-depth threshold for learning quantum circuits
A model of random all-to-all two-qubit circuits links the transition to lightcone growth, but the result depends on concentration assumptions.
Search
2,451 results
2241–2260
Preprint reports faster quantum error-correction schedules for neutral-atom arrays
A structure-aware compiler produced shorter modeled execution plans than existing methods, while larger jobs took many hours to compile.
Preprint predicts distinctive currents above the superconducting transition
A theoretical study says polarization, frequency and dephasing could reveal whether fluctuating Cooper pairs show thermodynamic or kinetic nonreciprocity.
Preprint: A reduced local test sorts entanglement structures in 100-qubit simulations
Using one selected basis cut measurement settings 81-fold in numerical tests, but hardware accuracy fell to the five-class random-guess baseline at 16 qubits.
Preprint: Simulated spin inversions can hide in simplified LISA waveforms
In five modeled inspirals, no-inversion waveforms matched above 0.999865, but the result comes from a restricted calculation rather than a full LISA signal model.
Preprint reports lower validation scores from a new language-model design
A Self–Exchange Relation system recorded lower negative log-likelihood than matched multi-head attention models at three tested scales, while speed results and secondary benchmarks were less consistent.
Preprint finds exact ceiling for a rank-correlation trade-off
A mathematical study identifies the unique pairing that maximizes Spearman’s rho at each fixed footrule, while leaving a related ξ–η region partly unresolved.
Preprint predicts anyon-condensate phases in triangular ladders
Finite model calculations map a boundary with chiral superfluids and suggest momentum patterns for telling the phases apart.
Preprint gives an exact geodesic rule for ellipsoid capacity
For every ellipsoid with ordered positive semiaxes, its unit disk bundle’s Hofer–Zehnder capacity is the smaller of twice the systole and a shortest closed geodesic with Morse index 3.
Preprint maps how mixed quantum channels can span several kinds of dynamics
A theoretical qubit study finds that independently tuned damping and anti-damping can alter divisibility and sometimes reduce deviation from ideal evolution.
Preprint Simulation Reports Robot Pair Synchronizing Under Fixed Communication Delays
An adaptive radial-basis-function controller was tested on a modeled master–slave pair; the baseline setting had the best reported tracking and settling measures among three settings.
Preprint finds graph-optimization logic tractable on bounded-width graphs, but hard with external sets
A theoretical study gives algorithms with quadratic or linear graph-size terms, while a related model-checking problem is hard across every fixed level of the polynomial hierarchy—even on trees of depth 4.
Preprint reports exact algorithm for two-dimensional learning coefficients
The symbolic method returns exact fractions for a repeated-weight polynomial neural-network benchmark, while deeper configurations sometimes ran beyond the reported one-hour limit.
Preprint maps static limits for an idealized star with a dark-matter core
An analytical model links internal composition to compactness limits, but does not test realistic neutron stars or dynamical stability.
Preprint finds hard loss limits can reshape portfolio risk
In four mathematical market settings, a binding terminal CVaR rule was associated with lower risky exposure after adverse outcomes while preserving participation in favorable states.
Preprint derives a closed solution for water moving through reacting porous material
The mathematical model shows an infiltration front can follow square-root, linear or exponential paths depending on hydration and porosity.
Preprint describes a recipe for building exact scalar–gravity solutions
The local method starts with a restricted Ricci-flat geometry, reshapes it with a Buchdahl parameter and completes the result with a path through scalar target space.
Preprint reports measurable word information in EEG during silent reading
A decoder found a gain over a permuted baseline in one participant’s recordings, but the study does not show that spontaneous inner speech can be decoded.
Preprint tests a cross-checking score for ranking possible drivers
In computer-based tests, the method put known links near the top, but it cannot show that changing a driver would change an outcome.
Preprint proposes a symmetry-based link between electron spin and light polarization
Calculations on a W(110) surface connect SARPES with its inverse, but only for the corresponding time-reversed setup.