Magnetism and quantum phase transitions in spin-1/2 attractive fermions with polarization
dc.contributor.author | He, Jingsong | pt_BR |
dc.contributor.author | Foerster, Angela | pt_BR |
dc.contributor.author | Guan, Xi-Wen | pt_BR |
dc.contributor.author | Batchelor, Murray T. | pt_BR |
dc.date.accessioned | 2015-05-15T02:01:21Z | pt_BR |
dc.date.issued | 2009 | pt_BR |
dc.identifier.issn | 1367-2630 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/116307 | pt_BR |
dc.description.abstract | An extensive investigation is given for magnetic properties and phase transitions in one-dimensional (1D) Bethe ansatz integrable spin-1/2 attractive fermions with polarization by means of the dressed energy formalism. An iteration method is presented to derive higher order corrections for the ground-state energy, critical fields and magnetic properties. Numerical solutions of the dressed energy equations confirm that the analytic expressions for these physical quantities and resulting phase diagrams are highly accurate in the weak and strong coupling regimes, capturing the precise nature of magnetic effects and quantum phase transitions in 1D interacting fermions with population imbalance. Moreover, it is shown that the universality class of linear fielddependent behaviour of the magnetization holds throughout the whole attractive regime. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | New journal of physics. Bristol. Vol. 11 (July 2009), 073009, 17 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Propriedades magnéticas | pt_BR |
dc.subject | Transformações de fase | pt_BR |
dc.subject | Supercondutores | pt_BR |
dc.subject | Superfluidez | pt_BR |
dc.title | Magnetism and quantum phase transitions in spin-1/2 attractive fermions with polarization | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000708208 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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