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

Lothar Mühlbacher, Eran Rabani

Research output: Contribution to journalArticlepeer-review


A real-time path-integral Monte Carlo approach is developed to study the dynamics in a many-body quantum system coupled to a phonon background 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.

Original languageEnglish
Article number176403
JournalPhysical Review Letters
Issue number17
StatePublished - 30 Apr 2008


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