The Reweighting Principle in Statistical MechanicsReweighting of probability measures provides a unifying perspective on ensemble transformations in statistical mechanics. We distinguish two complementary classes of reweighting: soft constraints,…Salvatore Romano·Jul 4, 2026SaveLearn
Quantum tunneling Mpemba effectWe investigate a quantum tunneling Mpemba effect for a particle in a continuous one-dimensional symmetric double-well potential subject to irreversible boundary loss. The dissipation is described by…Hisao Hayakawa, Satoshi Takada·Jul 4, 2026SaveLearn
Measurement-induced spatially nonuniform fluctuations of the local particle number and their crossover in a quasiperiodic free-fermion chainWe study continuously monitored dynamics of a quasiperiodic free-fermion chain defined on a Fibonacci lattice. We focus on fluctuations of the local particle number, which exhibit a spatially uniform…Toranosuke Matsubara, Kazuki Yamamoto·Jul 4, 2026SaveLearn
Free energies and optimal reaction coordinates via entropy productionWe show through theory and numerical experiments that a straightforward calculation of entropy production on short molecular dynamics trajectories allows estimating free-energy barriers and…Jérémy Diharce, Line Mouaffac, Axel Dian et al.·Jul 4, 2026SaveLearn
Probabilities of rare events in product kernel aggregation: An exact formula and phase diagramWe present an exact method for calculating the large deviation function describing rare fluctuations in the number of particles for product-kernel aggregation. Starting from the master equation, we…R. Goutham, R. Rajesh, V. Subashri et al.·Jul 4, 2026SaveLearn
Self-organized hyperuniformity in a minimal model of population dynamicsBy generalizing a class of models recently introduced to account for protracted transients in biological systems, we identify a novel mechanism for hyperuniformity. In this model, competition of…Tal Agranov, Natan Wiegenfeld, Omer Karin et al.·Jul 4, 2026SaveLearn
Time arrow in open-boundary one-dimensional stochastic dynamicsWe consider the finite-timestep stochastic dynamics of a single particle confined in one dimension, while the system has a nonuniform temperature profile. Under the open-boundary condition, one…Chi-Lun Lee, Yu-Syuan Lin, Pik-Yin Lai·Jul 4, 2026SaveLearn
Markov Chain Monte Carlo in Tensor Network RepresentationMarkov chain Monte Carlo (MCMC) is a powerful tool for sampling from complex probability distributions. Despite its versatility, MCMC often suffers from strong autocorrelation and the negative sign…Synge Todo·Jul 4, 2026SaveLearn
The Basins of Attraction of Soft Sphere Packings Are Not FractalThe energy landscape picture is a central tool to study many-body systems. In particular, the energy landscapes of glass-forming liquids, jammed packings, constraint satisfaction problems, or neural…Praharsh Suryadevara, Mathias Casiulis, Stefano Martiniani·Jul 4, 2026SaveLearn
Variance of the SIS Epidemic on Networks: A Diffusion ApproximationFunctional laws of large numbers (FLLNs) describe the mean-field trajectory of epidemics on networks, but say nothing about the fluctuations around it. These fluctuations are governed by moments of…Lucija Nora Farkaš, Sebastian Morel Balbi, Hrvoje Štefančić et al.·Jul 3, 2026SaveLearn
First passage time distribution in underdamped harmonic oscillatorsWe derive the distribution of the first passage time tfp for the position x of an underdamped harmonic oscillator to overcome a threshold xB. As the tfp distribution depends on the…Aubin Archambault, Caroline Crauste-Thibierge, Alberto Imparato et al.·Jul 3, 2026SaveLearn
First passage time for an underdamped harmonic oscillator and application to the power of an information engineThe distribution of the first passage time tfp for the position x to overcome a threshold xB is calculated in an underdamped harmonic oscillator. The proof combines several approaches based…Aubin Archambault, Caroline Crauste-Thibierge, Alberto Imparato et al.·Jul 3, 2026SaveLearn
Crossover and universality breaking in the dilute Baxter-Wu modelThe critical behavior of the Baxter-Wu model belongs to the universality class of the four-state Potts model. While the introduction of annealed vacancies does not alter the criticality of the…Dimitrios Mataragkas, Alexandros Vasilopoulos, Dong-Hee Kim et al.·Jul 3, 2026SaveLearn
Quantum Thermalization beyond Non-Integrability and Quantum Scars in a Multispecies Bose-Josephson JunctionThe modern framework for quantum thermalization is grounded in the Eigenstate Thermalization Hypothesis (ETH), in which non-integrability and chaos are historically assumed as prerequisites. This…Francesco Di Menna, Sergio Ciuchi, Simone Paganelli·Jul 3, 2026SaveLearn
Linear stability analysis for large dynamical systems on directed random graphsWe present a linear stability analysis of stationary states (or fixed points) in large dynamical systems defined on random directed graphs with a prescribed distribution of indegrees and outdegrees.…Izaak Neri, Fernando Lucas Metz·Jul 3, 2026SaveLearn
Non-equilibrium phase transition in the Brownian Ising Model: field theory, renormalization group, and exact resultsWe present a complete field-theoretical renormalization-group (RG) analysis of the Brownian Ising Model (BIM), in which a Z2 order parameter is coupled to a passive conserved density,…Mattia Scandolo, Luca Di Carlo·Jul 2, 2026SaveLearn
Non-equilibrium coupling to a diffusing density breaks Ising universalityThe Ising universality class is remarkably robust to non-equilibrium perturbations, which generically flow to zero under renormalization. We show that this robustness fails when an order parameter is…Mattia Scandolo, Johannes Pausch, Michael E. Cates et al.·Jul 2, 2026SaveLearn
On the emergence of quantum many-body chaos for tunably-broken integrabilityWe develop a quantitative theory for the emergence of quantum many-body chaos as integrability is broken via a tunable parameter. In a circuit model of free fermions, 'doped' with a tunable…Sounak Biswas, Sthitadhi Roy, Roderich Moessner·Jul 2, 2026SaveLearn
Contrarian Majority Dynamics: Violation of Detailed Balance and Nonequilibrium Steady StatesI revisit the Galam Majority Model (GMM) with contrarian agents from a statistical-mechanics perspective, revealing three fundamental features. First, in addition to the GMM simultaneous-update of…Serge Galam·Jul 2, 2026SaveLearn
Velocity and force autocorrelations in Brownian dynamics with a Lorentz forceWe derive a general relation between the velocity and force autocorrelation tensors (VACT and FACT) for a Brownian particle subject to an external magnetic field. Using time-symmetry arguments, we…Filippo Faedi, Abhinav Sharma·Jul 2, 2026SaveLearn
How wrong is too wrong: A numerical study on the relevance of positional memory in the generalized Langevin equationIf a generalized Langevin equation contains a potential of mean force, it cannot at the same time contain a linear memory kernel and a fluctuating force that obeys a second fluctuation dissipation…Abhir Mehrotra, Fabian Koch, Tanja Schilling·Jul 2, 2026SaveLearn
Alternative routes to universal diversity scaling in component systems: from proteomes to large language modelsRemarkably common statistical laws characterize the diversity scaling and its fluctuations across a wide range of complex "component systems". These regularities are often interpreted as…Andrea Mazzolini, Leonardo Agasso, Filippo Valle et al.·Jul 2, 2026SaveLearn
Exact amplitude relations for diffusion-limited aggregationIt has been known for several decades that the third moment of the multifractal spectrum of the harmonic measure for diffusion-limited aggregates is linked to the underlying fractal dimension of the…Thomas C Halsey·Jul 2, 2026SaveLearn
Theory of collective learning in populations of adaptive agentsWe investigate homogeneous populations of smart active agents that exchange information with their neighbors to perform a decentralized learning process aimed at achieving a prescribed macroscopic…Gerhard Jung, Johann Asnacios, Misaki Ozawa et al.·Jul 2, 2026SaveLearn
Path-Measure Dynamics of Attention-Driven World Models: A Nonlocal Onsager--Machlup ApproachAttention enables a world model to condition on its entire history, providing long-term memory that facilitates long-range predictions. While the local Onsager--Machlup theory in our companion paper…Gunn Kim·Jul 2, 2026SaveLearn