Effective Field Theory for Fermi Systems
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R.J. Furnstahl; H.-W. Hammer
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Article
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2002
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Elsevier Science
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English
โ 197 KB
A system of fermions with short-range interactions at finite density is studied using the framework of effective field theory. The effective action formalism for fermions with auxiliary fields leads to a loop expansion in which particle-hole bubbles are resummed to all orders. For spin-independent i