256 citations · 2.6k across the 81 of their papers we have counts for
6 papers · 1 filter
Quantum mechanical response to a driven Caldeira-Leggett bath
Hermann Grabert, Michael Thorwart
We determine the frequency-dependent response characteristics of a quantum system to a driven Caldeira-Leggett bath. The bath degrees of freedom are explicitly driven by an externa…
Quantum Brownian Motion With Large Friction
Joachim Ankerhold, Hermann Grabert, Philip Pechukas
Quantum Brownian motion in the strong friction limit is studied based on the exact path integral formulation of dissipative systems. In this limit the time-nonlocal reduced dynamic…
Exact c-number Representation of Non-Markovian Quantum Dissipation
J. Stockburger, H. Grabert
The reduced dynamics of a quantum system interacting with a linear heat bath finds an exact representation in terms of a stochastic Schr{ö}dinger equation. All memory effects of th…
Strong friction limit in quantum mechanics: the Quantum Smoluchowski equation
Joachim Ankerhold, Philip Pechukas, Hermann Grabert
For a quantum system coupled to a heat bath environment the strong friction limit is studied starting from the exact path integral formulation. Generalizing the classical Smoluchow…
Semiclassical time evolution of the density matrix and tunneling
Joachim Ankerhold, Hermann Grabert
The time dependent density matrix of a system with potential barrier is studied using path integrals. The characterization of the initial state, which is assumed to be restricted t…
Crossover from coherent to incoherent dynamics in damped quantum systems
Reinhold Egger, Hermann Grabert, Ulrich Weiss
The destruction of quantum coherence by environmental influences is investigated taking the damped harmonic oscillator and the dissipative two-state system as prototypical examples…