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Beyond-Luttinger-liquid thermodynamics of a one-dimensional Bose gas with repulsive contact interactions

Author
De Rosi, G.; Massignan, P.; Lewenstein, M.; Astrakharchik, G.
Type of activity
Journal article
Journal
Physical review research
Date of publication
2019-11-07
Volume
1
First page
033083-1
Last page
033083-9
DOI
10.1103/PhysRevResearch.1.033083
Project funding
Dynamics and Thermodynamics of Ultradilute Liquids
Strongly and Weakly Interacting Ultracold Quantum Matter
Repository
http://hdl.handle.net/2117/174451 Open in new window
https://arxiv.org/abs/1905.07391 Open in new window
URL
https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.1.033083 Open in new window
Abstract
We present a thorough study of the thermodynamics of a one-dimensional repulsive Bose gas, focusing in particular on corrections beyond the Luttinger-liquid description. We compute the chemical potential, pressure, and contact as a function of temperature and gas parameter with an exact thermal Bethe ansatz. In addition, we provide interpretations of the main features in the analytically tractable regimes, based on a variety of approaches (Bogoliubov, hard core, Sommerfeld, and virial). The beyo...
Citation
De Rosi, G. [et al.]. Beyond-Luttinger-liquid thermodynamics of a one-dimensional Bose gas with repulsive contact interactions. "Physical review research", 7 Novembre 2019, vol. 1, p. 033083-1-033083-9.
Keywords
Bethe ansatz, Bose gases, Hard-core bosons, Hartree-Fock methods, Perturbative methods, Quasiparticles & collective excitations, Spinless fermions, Thermal properties
Group of research
SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity

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