Regular Article - Theoretical Physics
Glueballs at high temperature within the hard-wall holographic model
Dipartimento di Fisica e Geologia, INFN Section of Perugia, Università degli studi di Perugia, Via A. Pascoli, 06123, Perugia, Italy
2 Departamento de Física Teórica-IFIC, Universidad de Valencia- CSIC, 46100, Burjassot, Valencia, Spain
Accepted: 7 February 2022
Published online: 15 February 2022
In this investigation an holographic description of the deconfined phase transition of scalar and tensor glueballs is presented within the so called hard-wall model. The spectra of these bound states of gluons have been calculated from the linearized Einstein equations for a graviton propagating from a thermal space to an AdS Black-Hole. In this framework, the deconfined phase is reached via a two steps mechanism. We propose that the transition between the AdS thermal sector to the BH is described via a first order phase transition, with discontinuous masses at the critical temperature, which has been determined by Herzog’s method of regulating the free energy densities. Then, the glueball masses diverge with increasing T in the BH phase and thus lead to deconfined states à la Hagedorn.
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