Probing the ergodicity breaking transition via violations of random matrix theoretic predictions for local observables

This paper demonstrates that violations of random matrix theory predictions for local observables, specifically regarding quantum Fisher information dynamics and fluctuation-dissipation relations, can serve as effective witnesses for detecting ergodicity-breaking transitions in quantum many-body systems across integrability, many-body localization, and quantum many-body scars.

Venelin P. Pavlov, Peter A. Ivanov, Diego Porras, Charlie NationThu, 12 Ma⚛️ quant-ph

Experimental simulation of non-equilibrium quantum piston on a programmable photonic quantum computer

This paper reports the experimental simulation of a two-boson quantum piston on a programmable photonic quantum computer, demonstrating how bosonic interference reshapes non-equilibrium work statistics and validating thermodynamic fluctuation relations like the Jarzynski equality across various driving protocols.

Govind Krishna, Rohan Yadgirkar, Balakrishnan Krishnakumar, Andrea Cataldo, Ze-Sheng Xu, Johannes W. N. Los, Val Zwiller, Jun Gao, Ali W. ElshaariThu, 12 Ma🔬 physics.optics

Beam-Plasma Collective Oscillations in Intense Charged-Particle Beams: Dielectric Response Theory, Langmuir Wave Dispersion, and Unsupervised Detection via Prometheus

This paper establishes a kinetic field theory for beam-plasma collective oscillations in intermediate-energy charged-particle beams, deriving dispersion relations and critical density thresholds that are validated by a Prometheus beta-VAE analyzing particle-in-cell simulation data to confirm predicted signatures like density-tunable resonances and Friedel oscillations.

Brandon Yee, Wilson Collins, Michael Iofin, Jiayi FuThu, 12 Ma🔬 physics

Integrability-breaking-induced Mpemba effect in spin chains

This paper demonstrates that weakly broken integrability in spin chains induces a symmetry-restoration Mpemba effect through two distinct mechanisms: an early-time crossing where hotter systems equilibrate faster due to larger phase space, and a late-time crossing where colder systems overtake them because they sustain superdiffusive spin hydrodynamics for a parametrically longer duration in non-integrable models.

Adam J. McRobertsThu, 12 Ma🔬 cond-mat

Bridge Scaling in Conditioned Henyey-Greenstein Random Walks

This paper uses Monte Carlo simulations to demonstrate that fixed-length bridge paths in three-dimensional Henyey-Greenstein random walks exhibit four significant deviations from classical Brownian-excursion theory—such as super-diffusive amplitude scaling and a Rayleigh midpoint distribution—due to the walk's evolution on a two-dimensional Markovian state space, raising the question of whether these anomalies represent a permanent universality-class shift or a slow crossover.

Claude Zeller (Claude Zeller Consulting LLC)Thu, 12 Ma🔬 cond-mat

Uncovering statistical structure in large-scale neural activity with Restricted Boltzmann Machines

This paper demonstrates that Restricted Boltzmann Machines can effectively model large-scale neural activity from approximately 1,500 to 2,000 simultaneously recorded neurons, capturing complex higher-order statistics and revealing anatomically structured interaction networks that align with visual behavior and global dynamics.

Nicolas Béreux, Giovanni Catania, Aurélien Decelle, Francesca Mignacco, Alfonso de Jesús Navas Gómez, Beatriz SeoaneThu, 12 Ma🧬 q-bio

Phase transitions in coupled Ising chains and SO(NN)-symmetric spin chains

By combining perturbative renormalization group analysis with large-scale matrix-product state simulations, this study demonstrates that quantum phase transitions in coupled Ising chains and SO(NN)-symmetric spin systems are continuous for N=2N=2 and N=3N=3 but become first-order for N4N \ge 4, thereby refining conjectures about criticality in symmetry-protected topological phase transitions.

Yohei Fuji, Sylvain Capponi, Lukas Devos, Philippe LecheminantMon, 09 Ma🔬 cond-mat

Tethering effects on first-passage variables of lattice random walks in linear and quadratic focal point potentials

This paper bridges a gap in the literature by analyzing the dynamics of lattice random walks in linear (V-shaped) and quadratic (U-shaped) focal point potentials, revealing unique first-passage behaviors such as logarithmic growth of distinct sites visited, non-monotonic mean first-passage times dependent on bias strength, and the emergence of a motion-limited regime under resetting, which contrasts with continuous Brownian motion.

Debraj Das, Luca GiuggioliMon, 09 Ma🔬 cond-mat