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SAMOP 2023 – scientific programme

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QI: Fachverband Quanteninformation

QI 29: Quantum Thermodynamics and Open Quantum Systems II

QI 29.3: Talk

Thursday, March 9, 2023, 15:00–15:15, B302

Nonequilibrium quantum thermodynamics in open systems: the influence of initial correlations — •Alessandra Colla1, Niklas Neubrand1, and Heinz-Peter Breuer1,21Institute of Physics, University of Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany — 2EUCOR Centre for Quantum Science and Quantum Computing, University of Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany

Finding a consistent formulation of quantum thermodynamics for general nonequilibrium processes is a fundamental and relevant question of recent research that has prompted the development of several proposals for the definition of basic thermodynamics quantities such as work, heat and entropy production. We have recently put forth one such approach (Phys. Rev. A 105, 052216) which relies on techniques of open quantum systems to determine an effective Hamiltonian as the operator for internal energy. The original formulation of the approach assumes factorizing initial conditions between the system of interest and the bath. We show here that the theory may be extended to any initial system-bath correlations with the important result that the effective Hamiltonian is unaffected by the presence of the initial correlations.

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