Vector-type four-quark interaction and its impact on QCD phase structure

Sakai, Yuji; Kashiwa, Kouji; Yahiro, Masanobu; Kouno, Hiroaki; Matsuzaki, Masayuki

doi:10.1103/PHYSREVD.78.076007

Title: Vector-type four-quark interaction and its impact on QCD phase structure

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Abstract

Effects of the vector-type four-quark interaction on QCD phase structure are investigated in the imaginary chemical potential ({mu}) region, by using the Polyakov-loop extended Nambu-Jona-Lasinio model with the extended Z{sub 3} symmetry. We clarify analytically the Roberge-Weiss periodicity and symmetry properties of various quantities under the existence of a vector-type four-quark interaction. In the imaginary {mu} region, the chiral condensate and the quark-number density are sensitive to the strength of the interaction. Based on this result, we propose a possibility to determine the strength of the vector-type interaction, which largely affects QCD phase structure in the real {mu} region, by comparing the results of lattice simulations and effective model calculations in the imaginary {mu} region.

Authors:

Sakai, Yuji; Kashiwa, Kouji; Yahiro, Masanobu ^[1]; Kouno, Hiroaki ^[2]; Matsuzaki, Masayuki ^[3]

Department of Physics, Graduate School of Sciences, Kyushu University, Fukuoka 812-8581 (Japan)
Department of Physics, Saga University, Saga 840-8502 (Japan)
Department of Physics, Fukuoka University of Education, Munakata, Fukuoka 811-4192 (Japan)

Publication Date:: Wed Oct 01 00:00:00 EDT 2008

OSTI Identifier:: 21254352

Resource Type:: Journal Article

Journal Name:: Physical Review. D, Particles Fields

Additional Journal Information:: Journal Volume: 78; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.78.076007; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHIRALITY; COMPUTERIZED SIMULATION; CONDENSATES; DENSITY; INTERACTIONS; LATTICE FIELD THEORY; PERIODICITY; POTENTIALS; QUANTUM CHROMODYNAMICS; QUARKS; SYMMETRY

Citation Formats


                    Sakai, Yuji, Kashiwa, Kouji, Yahiro, Masanobu, Kouno, Hiroaki, and Matsuzaki, Masayuki. Vector-type four-quark interaction and its impact on QCD phase structure.  United States: N. p., 2008. 
        Web.  doi:10.1103/PHYSREVD.78.076007.

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                    Sakai, Yuji, Kashiwa, Kouji, Yahiro, Masanobu, Kouno, Hiroaki, & Matsuzaki, Masayuki. Vector-type four-quark interaction and its impact on QCD phase structure.  United States.  https://doi.org/10.1103/PHYSREVD.78.076007

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                    Sakai, Yuji, Kashiwa, Kouji, Yahiro, Masanobu, Kouno, Hiroaki, and Matsuzaki, Masayuki. 2008.  
        "Vector-type four-quark interaction and its impact on QCD phase structure".  United States.  https://doi.org/10.1103/PHYSREVD.78.076007.

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@article{osti_21254352,

  title        = {Vector-type four-quark interaction and its impact on QCD phase structure},

  author       = {Sakai, Yuji and Kashiwa, Kouji and Yahiro, Masanobu and Kouno, Hiroaki and Matsuzaki, Masayuki},

  abstractNote = {Effects of the vector-type four-quark interaction on QCD phase structure are investigated in the imaginary chemical potential ({mu}) region, by using the Polyakov-loop extended Nambu-Jona-Lasinio model with the extended Z{sub 3} symmetry. We clarify analytically the Roberge-Weiss periodicity and symmetry properties of various quantities under the existence of a vector-type four-quark interaction. In the imaginary {mu} region, the chiral condensate and the quark-number density are sensitive to the strength of the interaction. Based on this result, we propose a possibility to determine the strength of the vector-type interaction, which largely affects QCD phase structure in the real {mu} region, by comparing the results of lattice simulations and effective model calculations in the imaginary {mu} region.},

  doi          = {10.1103/PHYSREVD.78.076007},

  url          = {https://www.osti.gov/biblio/21254352},
  journal      = {Physical Review. D, Particles Fields},

  issn         = {0556-2821},

  number       = 7,

  volume       = 78,

  place        = {United States},

  year         = {Wed Oct 01 00:00:00 EDT 2008},

  month        = {Wed Oct 01 00:00:00 EDT 2008}

}

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