🔬 Category

cond-mat.stat-mech

2407 papers

Statistical mechanics explores how the chaotic motion of countless tiny particles gives rise to the predictable laws governing heat, pressure, and phase transitions. This field bridges the gap between the microscopic world of atoms and the macroscopic reality we experience daily, offering deep insights into why materials behave the way they do.

On Gist.Science, we process every new preprint in this category as it appears on arXiv to make these complex findings accessible to everyone. For each paper, we provide both a plain-language explanation for the curious reader and a detailed technical summary for specialists, ensuring that groundbreaking research is never lost behind a wall of jargon.

Below are the latest papers in statistical mechanics, freshly curated and summarized to help you understand the cutting edge of this fascinating discipline.

🔬 condensed matter

When velocity autocorrelations mirror force autocorrelations: Exact noise-cancellation in interacting Brownian systems

This paper provides a rigorous theoretical justification for the noise-cancellation algorithm in interacting Brownian systems by proving that cross-correlations vanish in thermal equilibrium—rendering the method exact—while demonstrating that finite cross-correlations in nonequilibrium systems serve as a distinct fingerprint of non-equilibrium physics requiring specific corrections.

Anton Lüders, Suvendu Mandal, Thomas Franosch2026-03-11
⚛️ quantum physics

Universal Family-Vicsek scaling in quantum gases far from equilibrium

This paper experimentally demonstrates that the universal Family-Vicsek scaling laws, originally established for classical surface growth, also govern the non-equilibrium dynamics of quantum fluctuations in a one-dimensional Bose gas, thereby unifying the understanding of universality across classical and quantum systems.

Kiryang Kwon, Kazuya Fujimoto, Junhyeok Hur, Byungjin Lee, Samgyu Hwang, Sumin Kim, Ryusuke Hamazaki, Yuki Kawaguchi, Ja (…)2026-03-11
🤖 machine learning

Verifying Good Regulator Conditions for Hypergraph Observers: Natural Gradient Learning from Causal Invariance via Established Theorems

This paper verifies that persistent observers in causally invariant hypergraph substrates satisfy the Conant-Ashby Good Regulator Theorem, thereby necessitating internal models that lead to natural gradient descent as the unique learning rule and yielding a model-dependent closed-form formula for Vanchurin's regime parameter α\alpha with a quantum-classical threshold at κ(F)=2\kappa(F)=2.

Max Zhuravlev2026-03-11
⚛️ quantum physics

Topological phase transition of deformed Z3{\mathbb Z}_3 toric code

This paper investigates the topological phase transitions of a deformed Z3\mathbb{Z}_3 toric code by mapping its wavefunction norm to classical partition functions, revealing a rich phase diagram with three distinct phases separated by critical lines characterized by Z3\mathbb{Z}_3 and Z4\mathbb{Z}_4 parafermion conformal field theories, as well as isolated critical points exhibiting Hilbert space fragmentation and quantum many-body scars.

Yun-Tak Oh, Hyun-Yong Lee2026-03-11
🔬 condensed matter

Effect of Cylindrical Confinement on the Collapse Dynamics of a Polymer

Using molecular dynamics simulations, this study reveals that cylindrical confinement induces a two-stage collapse of homopolymers from a good to a poor solvent—characterized by the formation of pearl-necklace clusters followed by their coalescence into a spherical globule—wherein the relaxation dynamics and activation energies exhibit distinct dependencies on confinement radius and temperature, despite a universal power law governing cluster growth at fixed confinement.

Shubham Thwal, Suman Majumder2026-03-11
🔬 condensed matter

Temporal Berry Phase and the Emergence of Bose-Glass-Analog Phase in a Clean U(1) Superfluid

This paper demonstrates that a temporal Berry phase in a clean U(1) nonlinear sigma model induces space-time anisotropic vortex interference, leading to a quasi-disordered phase with short-range spatial order and persistent temporal coherence that shares the essential correlation properties of the disordered Bose Glass phase, thereby suggesting a unified topological origin for glassy behavior in phase-fluctuation-driven superfluid transitions.

Ryuichi Shindou, Pengwei Zhao, Xiaonuo Fang2026-03-11