English

Chiral symmetry restoration in a rotating medium

High Energy Physics - Phenomenology 2023-06-09 v2 High Energy Physics - Theory Nuclear Theory

Abstract

We study the nature of the chiral symmetry restoration within the Yukawa model with spontaneous symmetry breaking. We work with scalar and fermion fields which are subject to the effects of a rotating system. In this work, we show the derivation of the scalar field propagator in a rotating medium using the Fock-Schwinger proper-time method. We compute analytically the effective potential in the high-temperature approximations, including the contribution of the ring diagrams to account for the plasma screening properties. We study the chiral transition as we vary the angular velocity Ω\Omega, the boson self-coupling λ\lambda and the fermion-boson coupling gg. We show that the critical temperature for the restoration of chiral symmetry always starts with decreasing behaviour, until it reaches a minimum and from there when increasing Ω\Omega, we observe TcT_c increases monotonically. In all the phase transition lines in the TΩT-\Omega plane reported, we obtain that the rotating effects are able to change the order of the phase transition.

Keywords

Cite

@article{arxiv.2305.00101,
  title  = {Chiral symmetry restoration in a rotating medium},
  author = {Irving I. Gaspar and Luis A. Hernández and Renato Zamora},
  journal= {arXiv preprint arXiv:2305.00101},
  year   = {2023}
}

Comments

14 pages and 6 figures. References added and typos corrected