This paper investigates a solvable chirally symmetric quark model with a linear confining potential and finds that while chiral symmetry is spontaneously broken at zero temperature, it gets restored at a finite temperature similar to that observed in lattice QCD, suggesting a mechanism of Pauli blocking by thermal excitations.
The K1 and K* mesons, as ideal chiral partners with relatively small decay widths, are optimal for studying chiral symmetry restoration in high-temperature/density environments, unlike the ϕ and ω mesons which lack true chiral partners due to flavor mixing.