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math-ph2014★ 4 cited
The exponent in the orthogonality catastrophe for Fermi gases
Martin Gebert, Heinrich Küttler, Peter Müller +1
We quantify the asymptotic vanishing of the ground-state overlap of two non-interacting Fermi gases in -dimensional Euclidean space in the thermodynamic limit. Given two one-par…
math-ph2014★ 2 cited
Finite-size energy of non-interacting Fermi gases
Martin Gebert
We prove the asymptotics of the difference of the ground-state energies of two non-interacting -particle Fermi gases on the half line of length in the thermodynamic limit up…