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Magnetism and quantum phase transitions in spin-1/2 attractive fermions with polarization

He, J S; Foerster, Angela; Guan, Xi-Wen; Batchelor, Murray T


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...[Show more]

CollectionsANU Research Publications
Date published: 2009-07-03
Type: Journal article
Source: New Journal of Physics
DOI: 10.1088/1367-2630/11/7/073009


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