Ground state energy of the dilute spin-polarized Fermi gas: Upper bound via cluster expansion
JOURNAL OF FUNCTIONAL ANALYSIS(2024)
Abstract
We prove an upper bound on the ground state energy of the dilute spin -polarized Fermi gas capturing the leading correction to the kinetic energy resulting from repulsive interactions. One of the main ingredients in the proof is a rigorous implementation of the fermionic cluster expansion of Gaudin et al. (1971) [15]. (c) 2024 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http:// creativecommons .org /licenses /by /4 .0/).
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Key words
Dilute Fermi gas,Fermionic cluster expansion
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