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Phase structure of quark systems in models with four-fermion interaction

  • Elementary Particles and Fields
  • Theory
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Abstract

The features of a hot and dense gas of quarks that are considered as quasiparticles of a model Hamiltonian with four-fermion interaction are studied. Adapted to the Nambu-Jona-Lasinio model, this approach allows us to accommodate a phase transition similar to the nuclear liquid-gas one. Arguments are given in favor of the statement that a plausible scenario of (partial) chiral-symmetry restoration (even at zero temperature) in such a system could be a mixed phase of the vacuum and normal baryonic matter. The properties of the transition layer separating the two media in question are also discussed.

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Authors and Affiliations

  1. Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Metrologicheskaya ul. 14b, 03680, Kyiv, Ukraine

    G. M. Zinovjev

  2. Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, Russia

    S. V. Molodtsov

  3. Institute of Theoretical and Experimental Physics, Bol’shaya Cheremushkinskaya ul. 25, Moscow, 117218, Russia

    S. V. Molodtsov

Authors
  1. G. M. Zinovjev
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  2. S. V. Molodtsov
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Correspondence to S. V. Molodtsov.

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Original Russian Text © G.M. Zinovjev, S.V. Molodtsov, 2012, published in Yadernaya Fizika, 2012, Vol. 75, No. 2, pp. 262–275.

The text was submitted by the authors in English.

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Zinovjev, G.M., Molodtsov, S.V. Phase structure of quark systems in models with four-fermion interaction. Phys. Atom. Nuclei 75, 239–252 (2012). https://doi.org/10.1134/S1063778812020202

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  • DOI: https://doi.org/10.1134/S1063778812020202

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