https://doi.org/10.1140/epjc/s10052-024-13447-5
Regular Article - Theoretical Physics
Pseudoscalar mesons from a PNJL model at zero temperature
1
Departamento de Fisica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, and IFLP, UNLP-CONICET, C.C. 67 (1900), La Plata, Argentina
2
Departamento de Física e Laboratório de Computação Científica Avançada e Modelamento (Lab-CCAM), Instituto Tecnológico de Aeronáutica, DCTA, 12228-900, São José dos Campos, SP, Brazil
Received:
15
April
2024
Accepted:
30
September
2024
Published online:
16
October
2024
We study pseudoscalar 
, K and 
meson properties, such as masses and couplings, in dense matter at zero temperature. We use a recently proposed phenomenological quark model, known as the PNJL0, which takes into account the confinement/deconfinement phase transition by means of the traced Polyakov loop (
) which serves as an order parameter at zero temperature. We consider two different scenarios, namely, symmetric quark matter with equal chemical potentials for all the flavors, and the beta equilibrated matter. In the latter case the hadron-quark phase transition is implemented by a two model approach. For the hadron side we use a relativistic mean-field model with density dependent couplings. We show that induces abrupt changes in the mesons properties with gap sizes regulated by the phenomenological gluonic sector of the model.
© The Author(s) 2024
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