The free energy of the two-dimensional dilute Bose gas. I. Lower bound

A. Deuchert, S. Mayer, R. Seiringer, Forum of Mathematics, Sigma 8 (2020) e20.

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Journal Article | Published | English
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Abstract
We prove a lower bound for the free energy (per unit volume) of the two-dimensional Bose gas in the thermodynamic limit. We show that the free energy at density 𝜌 and inverse temperature 𝛽 differs from the one of the noninteracting system by the correction term 𝜋𝜌𝜌𝛽𝛽 . Here, is the scattering length of the interaction potential, and 𝛽 is the inverse Berezinskii–Kosterlitz–Thouless critical temperature for superfluidity. The result is valid in the dilute limit 𝜌 and if 𝛽𝜌 .
Publishing Year
Date Published
2020-03-14
Journal Title
Forum of Mathematics, Sigma
Volume
8
Article Number
e20
eISSN
IST-REx-ID

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Deuchert A, Mayer S, Seiringer R. The free energy of the two-dimensional dilute Bose gas. I. Lower bound. Forum of Mathematics, Sigma. 2020;8:e20. doi:10.1017/fms.2020.17
Deuchert, A., Mayer, S., & Seiringer, R. (2020). The free energy of the two-dimensional dilute Bose gas. I. Lower bound. Forum of Mathematics, Sigma, 8, e20. https://doi.org/10.1017/fms.2020.17
Deuchert, Andreas, Simon Mayer, and Robert Seiringer. “The Free Energy of the Two-Dimensional Dilute Bose Gas. I. Lower Bound.” Forum of Mathematics, Sigma 8 (2020): e20. https://doi.org/10.1017/fms.2020.17.
A. Deuchert, S. Mayer, and R. Seiringer, “The free energy of the two-dimensional dilute Bose gas. I. Lower bound,” Forum of Mathematics, Sigma, vol. 8, p. e20, 2020.
Deuchert A, Mayer S, Seiringer R. 2020. The free energy of the two-dimensional dilute Bose gas. I. Lower bound. Forum of Mathematics, Sigma. 8, e20.
Deuchert, Andreas, et al. “The Free Energy of the Two-Dimensional Dilute Bose Gas. I. Lower Bound.” Forum of Mathematics, Sigma, vol. 8, Cambridge University Press, 2020, p. e20, doi:10.1017/fms.2020.17.
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