Infrared Catastrophe in Fermi Gases with Local Scattering Potentials

P. W. Anderson
Phys. Rev. Lett. 18, 1049 – Published 12 June 1967
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Abstract

We prove that the ground state of a system of N fermions is orthogonal to the ground state in the presence of a finite range scattering potential, as N. This implies that the response to application of such a potential involves only emission of excitations into the continuum, and that certain processes in Fermi gases may be blocked by orthogonality in a low-T, low-energy limit.

  • Received 27 March 1967

DOI:https://doi.org/10.1103/PhysRevLett.18.1049

©1967 American Physical Society

Authors & Affiliations

P. W. Anderson

  • Bell Telephone Laboratories, Murray Hill, New Jersey

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Issue

Vol. 18, Iss. 24 — 12 June 1967

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