Full Quantum Work Statistics for Non-Homogeneous Many-Body Systems

• URL: http://arxiv.org/abs/2512.18338v1
• Date: Sat, 20 Dec 2025 12:08:50 GMT
• Title: Full Quantum Work Statistics for Non-Homogeneous Many-Body Systems
• Abstract summary: The nonequilibrium thermodynamics of interacting quantum many-body systems is investigated within the framework of thermal time-dependent density functional theory.<n>A first-principles route is established to reconstruct the relaxation function that underlies linear-response theory.<n>Results provide a microscopic and transferable framework for quantum thermodynamics in correlated systems.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The nonequilibrium thermodynamics of interacting quantum many-body systems is investigated within the framework of thermal time-dependent density functional theory using a generalized linear-response formulation for the full quantum work statistics. A first-principles route is established to reconstruct the relaxation function that underlies linear-response theory, thereby moving beyond phenomenological descriptions and enabling a consistent evaluation of all moments of the dissipated-work distribution in interacting systems. The predictive power of the approach is demonstrated for the Hubbard model subject to a staggered external potential, where the evolution of the relaxation dynamics across the Mott-to-band-insulator crossover reveals how distinct many-body phases shape the out-of-equilibrium thermodynamic response. These results provide a microscopic and transferable framework for quantum thermodynamics in correlated systems, bridging thermal density functional theory and nonequilibrium work statistics.

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