6 papers
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-…
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…
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…
Stochastic Thermodynamics of Micromagnetics with Spin Torque
Mingnan Ding, Jun Wu, Xiangjun Xing
In this work, we study the stochastic dynamics of micro-magnetics interacting with a spin-current torque. We extend the previously constructed stochastic Landau-Lifshitz equation t…
Stochastic thermodynamics of Brownian motion in a flowing fluid
Jun Wu, Mingnan Ding, Xiangjun Xing
We study stochastic thermodynamics of over-damped Brownian motion in a flowing fluid. Unlike some previous works, we treat the effects of the flow field as a non-conservational dri…
Stochastic Thermodynamics of Micromagnetics
Mingnan Ding, Jun Wu, Xiangjun Xing
In this work, we study the stochastic thermodynamics of micro-magnetic systems. We first formulate the stochastic dynamics of micro-magnetic systems by incorporating noises into La…