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Properties of nuclear matter in cut-off field theory and renormalization group methods

H. Kouno·T. Mitsumori·Y. Iwasaki·K. Sakamoto·N. Noda·K. Koide·A. Hasegawa·M. Nakano
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Abstract

The properties of nuclear matter are studied in the cut-off field theory. It is found that, under the Hartree approximation, the small cut-off makes the equations of state hard, especially at higher densities. The theory is modified in the framework of the renormalization group methods with arbitrary cut-off $Λ^\prime$. It is found that the expansion in terms of the $σ$ meson field is more favorable than the naive expansion of the inverse of $Λ^\prime$, when we do not use very large $Λ^\prime$.

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H. Kouno, T. Mitsumori, Y. Iwasaki, K. Sakamoto, N. Noda, K. Koide, A. Hasegawa, M. Nakano. 1996-05-27. Properties of nuclear matter in cut-off field theory and renormalization group methods. https://arxiv.org/abs/nucl-th/9605038

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