High Density Effective Theory Confronts the Fermi Liquid

Details High Density Effective Theory Confronts the Fermi Liquid High Density Effective Theory Confronts the Fermi Liquid

2003-10-07

arxiv.org/abs/hep-ph/0310080v2

Phys.Rev. D69 (2004) 014020

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 2 figures; conclusion expanded, reference added

Scientific paper

10.1103/PhysRevD.69.014020

The high density effective theory recently introduced by Hong and Hsu to describe ultradense relativistic fermionic matter is used to calculate the tree-level forward scattering amplitude between two particles at the Fermi surface. While the direct term correctly reproduces that of the underlying gauge theory, the exchange term has the wrong sign. The physical consequences are discussed in the context of Landau's theoretical description of the Fermi liquid.

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