3 papers
cond-mat.stat-mech2025
Capturing the Demon in Szilard's Engine
Xiangjun Xing
In Szilard's engine, a demon measures a one-particle gas and applies feedback to extract work from thermal fluctuations, embodying Maxwell's notion that information reduces thermod…
cond-mat.stat-mech2025
A Rigorous Foundation for Stochastic Thermodynamics via the Microcanonical Ensemble
Xiangjun Xing
We consider a small Hamiltonian system strongly interacting with a much larger Hamiltonian system (the bath), while being driven by both a time-dependent control parameter and non-…
cond-mat.stat-mech2025
An ideal entropy transporter with finite power and vanishing fluctuation
Mingnan Ding, Jun Wu, Xiangjun Xing
We study a micro-magnet that interacts with a spin-polarized electric current, a heat bath, as well as a static magnetic field. The resulting non-equilibrium steady-state transport…