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arXiv · 1105.0413

Theta vacuum effects on QCD phase diagram

Yuji Sakai·Hiroaki Kouno·Takahiro Sasaki·Masanobu Yahiro
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Abstract

Theta vacuum effects on the QCD phase structure in the \mu-T plane are studied by using the Polyakov-loop extended Nambu-Jona-Lasinio model and its extension, where \mu is the quark chemical potential and T is temperature, respectively. As the parameter \theta of the theta vacuum increases, the chiral transition becomes stronger. For large \theta, it eventually becomes first order even at zero \mu.

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Yuji Sakai, Hiroaki Kouno, Takahiro Sasaki, Masanobu Yahiro. 2011-05-02. Theta vacuum effects on QCD phase diagram. https://doi.org/10.1016/j.physletb.2011.10.032

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