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Title:Real-Time Path Integral Simulations of Variable Frequency Phonons and Spin Reservoirs in Condensed Materials
Author(s):Forsythe, Kelsey McEntire
Doctoral Committee Chair(s):Makri, Nancy
Department / Program:Chemistry
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Physics, Condensed Matter
Abstract:In the following Feynman path integral technology is used to describe the influence of condensed media on several quantum systems. A comparison of vibrational adiabatic methods and exact path integral formulations is made in the context of variable frequency oscillators. Particular attention is paid to the motion of impurities in a semiconductor lattice and reverse isotopic effects arising due to variable frequency oscillator coordinate(s). In addition, a comparison is made between the oft studied spin-boson problem and a model lattice of spins interacting with a two-level system. Significant differences in temperature and coupling dependence of the two model reservoirs are illustrated and discussed.
Issue Date:1999
Description:107 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1999.
Other Identifier(s):(MiAaPQ)AAI9921687
Date Available in IDEALS:2015-09-25
Date Deposited:1999

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