Two-level system coupled to phonons: Full analytical solution

Reference : Two-level system coupled to phonons: Full analytical solution


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/48854

Title :	Two-level system coupled to phonons: Full analytical solution
Language :	English
Author, co-author :	Chenu, Aurélia [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
	Shiau, S.-Y. []
	Combescot, Monique []
Publication date :	2019
Journal title :	Physical Review. B
Publisher :	American Physical Society
Volume :	99
Pages :	014302
Peer reviewed :	Yes (verified by ORBi^lu)
Audience :	International
ISSN :	2469-9950
e-ISSN :	2469-9969
City :	College Park
Country :	MD
Abstract :	[en] We propose an analytical procedure to fully solve a two-level system coupled to phonons. Instead of using the common formulation in terms of linear and quadratic system-phonon couplings, we introduce different phonons depending on the system electronic level. We use this approach to recover known results for the linear-coupling limit in a simple way. More importantly, we derive results for the quadratic coupling induced by a phonon frequency change, a problem considered up to now as not analytically solvable.
Permalink :	http://hdl.handle.net/10993/48854
DOI :	10.1103/PhysRevB.99.014302
Other URL :	https://arxiv.org/abs/1812.09043

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