Real-time path integral approach to nonequilibrium many-body quantum system

Abstract

A real-time path integral Monte Carlo approach is developed to study the dynamics in a many-body quantum system until reaching a nonequilibrium stationary state. The approach is based on augmenting an exact reduced equation for the evolution of the system in the interaction picture which is amenable to an efficient path integral (worldline) Monte Carlo approach. Results obtained for a model of inelastic tunneling spectroscopy reveal the applicability of the approach to a wide range of physically important regimes, including high (classical) and low (quantum) temperatures, and weak (perturbative) and strong electron-phonon couplings.

5 pages, 2 figures

References in corpus (3)

• Molecular Transport Junctions: Vibrational Effects
• Hybridization expansion impurity solver: General formulation and application to Kondo lattice and two-orbital models
• Efficient DMFT-simulation of the Holstein-Hubbard Model

Cited by in corpus (5)

• Dynamical phase transition in correlated fermionic lattice systems
• Diagrammatic Monte Carlo simulation of non-equilibrium systems
• Iterative real-time path integral approach to nonequilibrium quantum transport
• Charge and spin transport in strongly correlated one-dimensional quantum systems driven far from equilibrium
• Transient dynamics of the Anderson impurity model out of equilibrium