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Factorization and Non-Factorization of In-Medium Four-Quark Condensates

Stefan Leupold
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Abstract

It is well-established for the vacuum case that in the limit of a large number of colors N_c the four-quark condensates factorize into products of the two-quark condensate. It is shown that in the combined large-N_c and linear-density approximation four-quark condensates do not factorize in a medium of pions (finite temperature system) but do factorize in a medium of nucleons (nuclear system).

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Stefan Leupold. 2005-02-07. Factorization and Non-Factorization of In-Medium Four-Quark Condensates. https://doi.org/10.1016/j.physletb.2005.04.046

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