Open Quantum Systems and Feynman Integrals

Among quantum Langevin equations describing the unitary time evolution of a quantum system in contact with a quantum bath, we completely characterize those equations which are

This can be interpreted by treating the Feynman pseudomeasure as the product of its general ized density and distribution whose transformations are described by the

We also descibe the exact properties of the Quantum Fidelity (also called Loschmidt Echo) for the case of explicit quadratic plus inverse quadratic time-periodic Hamiltonians

In this paper we use the framework of NEGF to show that any attempt to define heat as the energy change in the reservoir energy plus any nonzero fraction of the

Abstract: - Many problems in hot electron physics, in particular the transport pro- perties of sub micron devices, involve space and time scales such that the semi- classical

The production of entropy solely vanishes for reversible transfor- mations, which corresponds to quasi-static (infinitely slow) processes. The second law has crucial

5 Band geometry measurement and anomalous Hall eect 121 5.1 Measuring the quantum geometric tensor in 2D photonic and exciton- polariton

We also prove that, under appropriate rescaling of the system and probe interactions, the state probability distribution and the system density matrix are solutions of