Year: 2026
Type: preprint
Abstract: We present a non-Markovian open-quantum-system formalism for nonequilibrium electron-phonon dynamics: a closed set of five coupled equations of motion, derived directly from the density matrix, in which memory, dissipative broadening, and coherent-phonon dynamics arise on an equal footing without two-time correlators. It recovers the Fan-Migdal, RPA-polarization, and Ehrenfest self-energies and the Lindblad and Boltzmann limits. In the strongly driven Holstein dimer it separates the coherent polaronic peak, of Ehrenfest origin, from the linewidths and multiphonon structure of Fan-Migdal origin.
Source: arXiv (Cornell University)
Authors: Riva, Gabriele, Simoni, Jacopo, Ping, Yuan
Institution: University of Wisconsin–Madison
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G122673668, G1547927836, G1677143136, G1863003419, G3083819904, G419881185, G42916606, SPIN-SELECTIVE PHOTOCATALYSIS AND QUANTUM TRANSPORT USING AB-INITIO DENSITY-MATRIX DYNAMICS, G6652958823, CAREER: Quantum Coherence, Optical Readout, and Quantum Transduction for Spin Qubits from First-Principles Calculations
OpenAlex ID: W7165689759