Chiral Thermodynamics with Charm

TL;DR

This paper develops a theoretical framework for understanding how chiral symmetry restoration affects charmed mesons at finite temperature, revealing unique flavor-dependent behaviors influenced by heavy quark symmetry.

Contribution

It introduces a $2+1+1$-flavored effective Lagrangian incorporating heavy quark symmetry to study chiral thermodynamics of charmed mesons, highlighting novel flavor-dependent effects.

Findings

Chiral mass splittings are less sensitive to light-quark flavors due to heavy quark symmetry.

Chiral symmetry restoration occurs more rapidly in strange charmed mesons than in strange light mesons.

Correlations between light and heavy flavors emerge around the chiral crossover.

Abstract

Chiral thermodynamics of charmed mesons is formulated at finite temperature within a $2+1+1$-flavored effective Lagrangian incorporating heavy quark symmetry. The chiral mass splittings are shown to be less sensitive to the light-quark flavors, attributed to the underlying heavy quark symmetry. Consequently, chiral symmetry restoration is more accelerated in the strange charmed-mesons than in the strange light mesons, and this is in striking contrast to the chiral SU(4) result. We also show the correlations between light and heavy flavors around the chiral crossover.