Quasi-degeneracies in a 2-spin system : symmetry aspects and a perturbational approach to tunnel splitting

Schatzer, Laro; Breymann, Wolfgang; Thomas, Harry

doi:10.21256/zhaw-1902

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-1902

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DC Field	Value	Language
dc.contributor.author	Schatzer, Laro	-
dc.contributor.author	Breymann, Wolfgang	-
dc.contributor.author	Thomas, Harry	-
dc.date.accessioned	2018-04-03T13:27:13Z	-
dc.date.available	2018-04-03T13:27:13Z	-
dc.date.issued	1996	-
dc.identifier.issn	0722-3277	de_CH
dc.identifier.issn	1431-584X	de_CH
dc.identifier.uri	https://digitalcollection.zhaw.ch/handle/11475/4620	-
dc.description	«Erworben im Rahmen der Schweizer Nationallizenzen (http://www.nationallizenzen.ch)»	de_CH
dc.description.abstract	A large number of energy levels in different invariant subspaces of the anisotropic XY-model are quasi-degenerate in a wide parameter range, i.e., their spacing is much smaller than the mean level spacing of the system. These quasi-degeneracies can be interpreted in two ways: (i) as tunnel splitting, (ii) as weak level splitting related to a parametric point of exact degeneracy. Starting from the second interpretation we calculate the tunnel splitting by use of perturbative methods.	de_CH
dc.language.iso	en	de_CH
dc.publisher	Springer	de_CH
dc.relation.ispartof	Zeitschrift für Physik B: Condensed Matter	de_CH
dc.rights	Licence according to publishing contract	de_CH
dc.subject.ddc	530: Physik	de_CH
dc.title	Quasi-degeneracies in a 2-spin system : symmetry aspects and a perturbational approach to tunnel splitting	de_CH
dc.type	Beitrag in wissenschaftlicher Zeitschrift	de_CH
dcterms.type	Text	de_CH
zhaw.departement	School of Engineering	de_CH
zhaw.organisationalunit	Institut für Datenanalyse und Prozessdesign (IDP)	de_CH
dc.identifier.doi	10.21256/zhaw-1902	-
dc.identifier.doi	10.1007/s002570050190	de_CH
zhaw.funding.eu	No	de_CH
zhaw.issue	1	de_CH
zhaw.originated.zhaw	Yes	de_CH
zhaw.pages.end	139	de_CH
zhaw.pages.start	131	de_CH
zhaw.publication.status	publishedVersion	de_CH
zhaw.volume	101	de_CH
zhaw.publication.review	Peer review (Publikation)	de_CH
Appears in collections:	Publikationen School of Engineering

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Schatzer, L., Breymann, W., & Thomas, H. (1996). Quasi-degeneracies in a 2-spin system : symmetry aspects and a perturbational approach to tunnel splitting. Zeitschrift Für Physik B: Condensed Matter, 101(1), 131–139. https://doi.org/10.21256/zhaw-1902

Schatzer, L., Breymann, W. and Thomas, H. (1996) ‘Quasi-degeneracies in a 2-spin system : symmetry aspects and a perturbational approach to tunnel splitting’, Zeitschrift für Physik B: Condensed Matter, 101(1), pp. 131–139. Available at: https://doi.org/10.21256/zhaw-1902.

L. Schatzer, W. Breymann, and H. Thomas, “Quasi-degeneracies in a 2-spin system : symmetry aspects and a perturbational approach to tunnel splitting,” Zeitschrift für Physik B: Condensed Matter, vol. 101, no. 1, pp. 131–139, 1996, doi: 10.21256/zhaw-1902.

SCHATZER, Laro, Wolfgang BREYMANN und Harry THOMAS, 1996. Quasi-degeneracies in a 2-spin system : symmetry aspects and a perturbational approach to tunnel splitting. Zeitschrift für Physik B: Condensed Matter. 1996. Bd. 101, Nr. 1, S. 131–139. DOI 10.21256/zhaw-1902

Schatzer, Laro, Wolfgang Breymann, and Harry Thomas. 1996. “Quasi-Degeneracies in a 2-Spin System : Symmetry Aspects and a Perturbational Approach to Tunnel Splitting.” Zeitschrift Für Physik B: Condensed Matter 101 (1): 131–39. https://doi.org/10.21256/zhaw-1902.

Schatzer, Laro, et al. “Quasi-Degeneracies in a 2-Spin System : Symmetry Aspects and a Perturbational Approach to Tunnel Splitting.” Zeitschrift Für Physik B: Condensed Matter, vol. 101, no. 1, 1996, pp. 131–39, https://doi.org/10.21256/zhaw-1902.