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As ongoing and upcoming experiments explore the QCD phase diagram, it is important to theoretically study various factors that become significant in such searches. We report here an investigation [1] of the effect of the finite system size on the phase diagram, using an effective model of QCD, the Nambu Jona-Lasinio (NJL) model. We discuss the importance of using appropriate boundary conditions in finite volume studies. With an MIT bag-like boundary condition, we find a strong volume effect on the phase transition line at large \(\mu _{\scriptscriptstyle B}\) , where the transition is first order.

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Volume Effect on the QCD Phase Diagram and the First Order Line

  • 会议论文

  • 发表日期：

    2025年

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  • Saumen Datta,
  • Ranjita Mohapatra,
  • Adiba Shaikh

摘要

As ongoing and upcoming experiments explore the QCD phase diagram, it is important to theoretically study various factors that become significant in such searches. We report here an investigation [1] of the effect of the finite system size on the phase diagram, using an effective model of QCD, the Nambu Jona-Lasinio (NJL) model. We discuss the importance of using appropriate boundary conditions in finite volume studies. With an MIT bag-like boundary condition, we find a strong volume effect on the phase transition line at large \(\mu _{\scriptscriptstyle B}\) , where the transition is first order.