| Texto completo | |
| Autor(es): |
Toniato, Bruno
;
Dudal, David
;
Mahapatra, Subhash
;
da Rocha, Roldao
;
Jena, Siddhi Swarupa
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 111, n. 12, p. 26-pg., 2025-06-27. |
| Resumo | |
We present a self-consistent dynamical holographic quantum chromodynamics (QCD) model to investigate the mass spectra and melting behavior of heavy and exotic mesons at finite temperature and finite density. Our approach is based on the Einstein-Maxwell-dilaton (EMD) framework and incorporates an elsewhere already introduced, albeit by hand, phenomenological nonquadratic dilaton profile. This allows one to capture the nonlinear Regge trajectories of heavy-flavor mesons and model certain exotic states. We show how to construct such models by actually solving the coupled Einstein, Maxwell, and dilaton field equations, ensuring mathematical self-consistency to replace any ad hoc input. At finite temperature, we analyze the confinement-deconfinement transition via a Hawking-Page phase transition. We compute the spectral functions, revealing the sequential melting of quarkonia as the temperature is increased. Extending to finite density, we explore the impact of baryon chemical potential on meson stability, showing significant modifications in spectral peaks and effective potentials that indicate a more rapid melting of mesonic states as the chemical potential increases in the deconfined phase. The dual of the small/large black hole transition now indicates toward a first order phase transition line ending at a second order critical point. Interestingly, the spectral functions smoothly cross this phase transition line. (AU) | |
| Processo FAPESP: | 21/01089-1 - Cherenkov Telescope Array: construção e primeiras descobertas |
| Beneficiário: | Luiz Vitor de Souza Filho |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |
| Processo FAPESP: | 24/05676-7 - Correspondências holográficas gauge/gravidade, coeficientes de resposta e transporte e correções quânticas |
| Beneficiário: | Roldão da Rocha Junior |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 22/15325-1 - QCD holográfica, mésons exóticos e correções a temperatura finita |
| Beneficiário: | Bruno Pinheiro Toniato |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |
| Processo FAPESP: | 23/09097-9 - Mésons exóticos a temperatura finita e difusão de quarks pesados em um campo magnético |
| Beneficiário: | Bruno Pinheiro Toniato |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Mestrado |