Thermodynamics of the limiting cases of the XXZ model without Bethe ansatz

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DC Field	Value	Language
dc.creator	Rojas Onofre	-
dc.creator	Souza S.M. de	-
dc.creator	Corrêa Silva E.V.	-
dc.creator	Thomaz M.T.	-
dc.date	2001	-
dc.date.accessioned	2013-05-30T01:18:21Z	-
dc.date.available	2013-05-30T01:18:21Z	-
dc.date.issued	2013-05-30	-
dc.identifier	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332001000400008	-
dc.identifier	http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=2001&volume=31&issue=4&spage=577	-
dc.identifier.uri	http://koha.mediu.edu.my:8181/jspui/handle/123456789/3296	-
dc.description	The Heisenberg XXZ model is a chain model with nearest-neighbor interactions. Its thermodynamics is exactly obtained via Bethe ansatz. Recently, we developed a method to derive the high-temperature expansion of the grand potential per site of translationally invariant chain models, with periodic boundary conditions. Here we apply this approach to the XXZ model with periodic boundary conditions for the Ising limit case (t = 0) and the free fermion case (delta = 0 and h = 0), obtaining results in agreement with the literature. In this new way of obtaining the coefficients of the high-temperature expansion of the grand potential, the coefficients are derived from an auxiliary function written only in terms of open connected sub-chains.	-
dc.publisher	Sociedade Brasileira de Física	-
dc.source	Brazilian Journal of Physics	-
dc.title	Thermodynamics of the limiting cases of the XXZ model without Bethe ansatz	-
Appears in Collections:	Physics and Astronomy

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