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Quark and Gluon Condensates at a Finite Isospin Chemical Potential

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Abstract

The nonperturbative vacuum of quantum chromodynamics at a finite isospin chemical potential has been studied. Low-energy relations for the quark and gluon condensates have been derived ab initio. Analytical expressions for the quark and gluon condensates in the pion-condensate phase have been obtained at the tree level of the chiral perturbation theory. It has been shown that the quark condensate decreases with increasing μI, whereas the gluon condensate increases.

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Funding

I acknowledge the support of the MEPhI Academic Excellence Project (contract no. 02.A03.21.0005).

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Authors and Affiliations

  1. Institute for Theoretical and Experimental Physics, National Research Center Kurchatov Institute, Moscow, 117218, Russia

    N. O. Agasian

  2. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409, Russia

    N. O. Agasian

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  1. N. O. Agasian
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Correspondence to N. O. Agasian.

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Russian Text © The Author(s), 2020, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2020, Vol. 111, No. 4, pp. 219–222.

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Agasian, N.O. Quark and Gluon Condensates at a Finite Isospin Chemical Potential. Jetp Lett. 111, 201–204 (2020). https://doi.org/10.1134/S0021364020040062

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  • DOI: https://doi.org/10.1134/S0021364020040062

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