Work

Low-temperature dynamical simulation of spin-boson systems

Year: 1994

Type: article

Abstract: The dynamics of spin-boson systems at very low temperatures has been studied using a real-time path-integral simulation technique, which combines a stochastic Monte Carlo sampling over the quantum fluctuations with an exact treatment of the quasiclassical degrees of freedom. To a large degree, this special technique circumvents the dynamical sign problem and allows the dynamics to be studied directly up to long real times in a numerically exact manner. This method has been applied to two important problems: (1) crossover from nonadiabatic to adiabatic behavior in electron-transfer reactions, (2) the zero-temperature dynamics in the antiferromagnetic Kondo region 1/2K1, where K is Kondo's parameter.

Source: Physical review. B, Condensed matter

DOI: 10.1103/physrevb.50.15210

Authors: Reinhold Egger, C. H. Mak

Institution: University of Southern California

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Camille and Henry Dreyfus Foundation, International Business Machines Corporation, Division of Chemistry

Awards: Path Integral Theory of Electron Transfer in Chemical and Biological Systems, NSF Young Investigator