6 papers
A Field-Theoretic Framework for Work Statistics and Universal Scaling in Non-equilibrium Phase Transitions
Yanbo Qiao, Ruohan Xu, H. T. Quan
We develop a field-theoretic framework for work statistics in models driven through criticality. By analyzing the dynamic renormalization group flow of composite power opera…
Scaling Behaviors of Work Cumulants in Slow Isothermal Processes
Ruohan Xu, Yanbo Qiao, H. T. Quan
We study the cumulants of work in a slow isothermal process for gapped systems. Using the Martin-Siggia-Rose-De Dominicis-Janssen (MSRDJ) formalism and the properties of connected…
Criticality around the Spinodal Point of First-Order Quantum Phase Transitions
Fan Zhang, Chiao Wang, H. T. Quan
Universality and scaling are hallmarks of second-order phase transitions but are generally unexpected in first-order quantum phase transitions (FOQPTs). We present a microscopic th…
Promoting Fluctuation Theorems into Covariant Forms
Ji-Hui Pei, Jin-Fu Chen, H. T. Quan
The principle of covariance, a cornerstone of modern physics, asserts the equivalence of all inertial frames of reference. Fluctuation theorems, as extensions of the second law of…
Ergodicity Breaking and Scaling Relations for Finite-Time First-Order Phase Transition
Yu-Xin Wu, Jin-Fu Chen, H. T. Quan
Hysteresis and metastable states are typical features associated with ergodicity breaking in the first-order phase transition. We explore the scaling relations of nonequilibrium th…
Optimal control theory for maximum power of Brownian heat engines
Jin-Fu Chen, H. T. Quan
The pursuit of achieving the maximum power in microscopic thermal engines has gained increasing attention in recent studies of stochastic thermodynamics. We employ the optimal cont…