Phase separation in binary Bose mixtures at finite temperature

Gabriele Spada; Luca Parisi; Gerard Pascual; Nicholas G. Parker; Thomas P. Billam; Sebastiano Pilati; Jordi Boronat; Stefano Giorgini

doi:10.21468/SciPostPhys.15.4.171

Phase separation in binary Bose mixtures at finite temperature

Gabriele Spada
, Luca Parisi
, Gerard Pascual
, Nicholas G. Parker
, Thomas P. Billam
, Sebastiano Pilati
, Jordi Boronat
, Stefano Giorgini

Università di Trento
School of Mathematics
Joint Quantum Centre
Universidad Politecnica de Catalunia
School of Science and Technology
University of Camerino
INFN Sezione di Perugia
Departament de Física i Enginyeria Nuclear

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We investigate the magnetic behavior of finite-temperature repulsive two-component Bose mixtures by means of exact path-integral Monte-Carlo simulations. Novel algorithms are implemented for the free energy and the chemical potential of the two components. Results on the magnetic susceptibility suggest that the conditions for phase separation are not modified from the zero temperature case. This contradicts previous predictions based on approximate theories. We also determine the temperature dependence of the chemical potential and the contact parameters for experimentally relevant balanced mixtures.

Original language	English
Article number	171
Journal	SciPost Physics
Volume	15
Issue number	4
DOIs	https://doi.org/10.21468/SciPostPhys.15.4.171
Publication status	Published - 1 Oct 2023
Externally published	Yes

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10.21468/SciPostPhys.15.4.171

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AU - Spada, Gabriele

AU - Parisi, Luca

AU - Pascual, Gerard

AU - Parker, Nicholas G.

AU - Billam, Thomas P.

AU - Pilati, Sebastiano

AU - Boronat, Jordi

AU - Giorgini, Stefano

PY - 2023/10/1

Y1 - 2023/10/1

N2 - We investigate the magnetic behavior of finite-temperature repulsive two-component Bose mixtures by means of exact path-integral Monte-Carlo simulations. Novel algorithms are implemented for the free energy and the chemical potential of the two components. Results on the magnetic susceptibility suggest that the conditions for phase separation are not modified from the zero temperature case. This contradicts previous predictions based on approximate theories. We also determine the temperature dependence of the chemical potential and the contact parameters for experimentally relevant balanced mixtures.

AB - We investigate the magnetic behavior of finite-temperature repulsive two-component Bose mixtures by means of exact path-integral Monte-Carlo simulations. Novel algorithms are implemented for the free energy and the chemical potential of the two components. Results on the magnetic susceptibility suggest that the conditions for phase separation are not modified from the zero temperature case. This contradicts previous predictions based on approximate theories. We also determine the temperature dependence of the chemical potential and the contact parameters for experimentally relevant balanced mixtures.

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Phase separation in binary Bose mixtures at finite temperature

Abstract

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