University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Wednesday, November 1st 2017
4:30 pm:
CM Journal Club in Tate 201-20
Speaker: Dmitry Chichinadze
Subject: Quantum tunneling and dynamics in dissipative systems

This week we are going to discuss effects of dissipation on quantum tunneling. The main part of the talk will be devoted to the Caldeira-Leggett model [1], which describes a quantum-mechanical system coupled to an ensemble of oscillators. We will also discuss some specific cases of CL model, which involve two-state systems [2]. The plan of talk is as follows: we first introduce model, discuss experimental relevance and derive general formalism to describe dissipative dynamics. In the second part we will apply this formalism to two-state system and discuss possible applications. Literature: First two references are the renowned papers. The last reference is a good (and very detailed) book on quantum dissipative systems in general.
[1] Caldeira, A. O., & Leggett, A. J. (1983). Quantum tunnelling in a dissipative system. Annals of physics, 149(2), 374-456.
[2] Leggett, A. J., Chakravarty, S. D. A. F. M. G. A., Dorsey, A. T., Fisher, M. P., Garg, A., & Zwerger, W. (1987). Dynamics of the dissipative two-state system. Reviews of Modern Physics, 59(1), 1.
[3] Weiss, U. (2012). Quantum dissipative systems (Vol. 13). World scientific.

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