English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/141078
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Continuous unitary transformations in two-level boson systems

AuthorsDusuel, S.; Vidal, Julien; Arias, José María; Dukelsky, Jorge ; García-Ramos, J.E
Issue Date30-Dec-2005
PublisherAmerican Physical Society
CitationPhysical Review C - Nuclear Physics 72: 064332 (2005)
AbstractTwo-level boson systems displaying a quantum phase transition from a spherical (symmetric) to a deformed (broken) phase are studied. A formalism to diagonalize Hamiltonians with O(2L+1) symmetry for large number of bosons is worked out. Analytical results beyond the simple mean-field treatment are deduced by using the continuous unitary transformations technique. In this scheme, a 1/N expansion for different observables is proposed and allows one to compute the finite-size scaling exponents at the critical point. Analytical and numerical results are compared and reveal the power of the present approach to compute the finite-size corrections in such a context. © 2005 The American Physical Society.
Description17 págs.; 16 figs.; 1 tab.; 3 apéndices ; PACS number(s): 21.60.Fw, 21.10.Re, 05.10.Cc, 75.40.Cx
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevC.72.064332
URIhttp://hdl.handle.net/10261/141078
DOI10.1103/PhysRevC.72.064332
Identifiersdoi: 10.1103/PhysRevC.72.064332
issn: 0556-2813
Appears in Collections:(CFMAC-IEM) Artículos
Files in This Item:
File Description SizeFormat 
Continuous.pdf365,86 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.