Motivated by recent experiments and theoretical investigations on binary mixtures, we investigate the miscible-immiscible transition at finite temperature by means of Quantum Monte Carlo. Based on the observation that the segregated phase is strongly affected by temperature, we propose to use the degree of demixing for thermometry of a binary bosonic mixture trapped in an optical lattice. We show that the proposed method is especially sensitive at low temperatures, of the order of the tunnelling amplitude, and therefore is particularly suitable in the regime where quantum magnetism is expected.

Thermometry of bosonic mixtures in Optical Lattices via Demixing / Lingua, Fabio; Capogrosso Sansone, B.; Minardi, F.; Penna, Vittorio. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - STAMPA. - 7:(2017). [10.1038/s41598-017-05353-6]

Thermometry of bosonic mixtures in Optical Lattices via Demixing

LINGUA, FABIO;PENNA, Vittorio
2017

Abstract

Motivated by recent experiments and theoretical investigations on binary mixtures, we investigate the miscible-immiscible transition at finite temperature by means of Quantum Monte Carlo. Based on the observation that the segregated phase is strongly affected by temperature, we propose to use the degree of demixing for thermometry of a binary bosonic mixture trapped in an optical lattice. We show that the proposed method is especially sensitive at low temperatures, of the order of the tunnelling amplitude, and therefore is particularly suitable in the regime where quantum magnetism is expected.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2677481
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