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Upper Bound for the Free Energy of Dilute Bose Gases at Low Temperature

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arxiv 2405.03378 v1 pith:QIHHOT4D submitted 2024-05-06 math-ph math.MP

Upper Bound for the Free Energy of Dilute Bose Gases at Low Temperature

classification math-ph math.MP
keywords mathfrakboundenergyfreebosetemperatureuppercite
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We consider a Bose gas at density $\rho > 0$, interacting through a repulsive potential $V \in L^2 (\mathbb{R}^3)$ with scattering length $\mathfrak{a} > 0$. We prove an upper bound for the free energy of the system, valid at low temperature $T \lesssim \rho \mathfrak{a}$. Combined with the recent lower bound obtained in \cite{HabHaiNamSeiTri-23}, our estimate resolves the free energy per unit volume up to and including the Lee--Huang--Yang order $\mathfrak{a} \rho^2 (\rho \mathfrak{a}^3)^{1/2}$.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Ground State Energy of Dilute Fermi Gases in 1D

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    Proves that the ground state energy of dilute 1D spin-J Fermi gases with repulsive interactions asymptotes to the ground state energy of a corresponding spin chain.

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