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Pressure of a dilute spin-polarized Fermi gas: Upper bound

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arxiv 2407.05990 v1 pith:ZZ3HBR4J submitted 2024-07-08 math-ph math.MP

Pressure of a dilute spin-polarized Fermi gas: Upper bound

classification math-ph math.MP
keywords boundpressurecorrectiondilutefermispin-polarizedupperarxiv
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We prove an upper bound on the pressure of a dilute fully spin-polarized Fermi gas capturing the leading correction to the pressure of a free gas resulting from repulsive interactions. This correction is of order $a^3\rho^{8/3}$, with $a$ the $p$-wave scattering length of the interaction and $\rho$ the particle density, depends on the temperature and matches the corresponding lower bound of [arXiv:2307.01113].

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  1. The Huang--Yang formula for a two-dimensional Fermi gas: upper bound

    math-ph 2026-06 unverdicted novelty 7.0

    Derives an upper bound on the ground state energy of a dilute 2D Fermi gas that captures the first three terms in the small ρa² asymptotic expansion.