Quantum Environments: Spin Baths, Oscillator Baths, and applications to Quantum Magnetism
Condensed Matter
2016-11-03 v1
Abstract
The low-energy physics of systems coupled to their surroundings is understood by truncating to effective Hamiltonians; these tend to reduce to a few canonical forms, involving coupling to "baths" of oscillators or spins. The method for doing this is demonstrated using examples from magnetism, superconductivity, and measurement theory, as is the way one then solves for the low-energy dynamics. Finally, detailed application is given to the exciting recent Quantum relaxation and tunneling work in naomagnets.
Cite
@article{arxiv.cond-mat/9810353,
title = {Quantum Environments: Spin Baths, Oscillator Baths, and applications to Quantum Magnetism},
author = {P. C. E. Stamp},
journal= {arXiv preprint arXiv:cond-mat/9810353},
year = {2016}
}
Comments
Chapter in "Tunneling in Complex Systems" (World Sci., edited T. Tomsovic); 97 pages. Published in June 1998