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Autores principales:	Ballon-Bayona, Alfonso, Bartz, Sean, Mamani, Luis A. H., Rodrigues, Diego M.
Formato:	Preprint
Publicado:	2024
Materias:	High Energy Physics - Phenomenology High Energy Physics - Lattice High Energy Physics - Theory
Acceso en línea:	https://arxiv.org/abs/2410.23471
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

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author	Ballon-Bayona, Alfonso Bartz, Sean Mamani, Luis A. H. Rodrigues, Diego M.
author_facet	Ballon-Bayona, Alfonso Bartz, Sean Mamani, Luis A. H. Rodrigues, Diego M.
contents	We describe the chiral transition for the quark condensate and the melting of scalar and vector mesons in two-flavor holographic QCD. This is done by extending the improved holographic soft wall models proposed in [1] to finite temperature, by means of introducing an asymptotically AdS black brane. We find that the chiral transition is second order in the chiral limit and a crossover for physical quark masses, as expected in two-flavor QCD. We investigate the melting of vector and scalar mesons in the deconfined plasma through the calculation of hadronic spectral functions. Fixing the model parameters by the meson spectrum at zero temperature, we find that the mesons melt at temperatures between $90$ and $110$ MeV and the chiral transition occurs around $129$ MeV. We also provide a prediction for the hydrodynamic diffusion constant associated with a flavor current in the deconfined plasma.
format	Preprint
id	arxiv_https___arxiv_org_abs_2410_23471
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Chiral transition and meson melting within improved holographic soft wall models Ballon-Bayona, Alfonso Bartz, Sean Mamani, Luis A. H. Rodrigues, Diego M. High Energy Physics - Phenomenology High Energy Physics - Lattice High Energy Physics - Theory We describe the chiral transition for the quark condensate and the melting of scalar and vector mesons in two-flavor holographic QCD. This is done by extending the improved holographic soft wall models proposed in [1] to finite temperature, by means of introducing an asymptotically AdS black brane. We find that the chiral transition is second order in the chiral limit and a crossover for physical quark masses, as expected in two-flavor QCD. We investigate the melting of vector and scalar mesons in the deconfined plasma through the calculation of hadronic spectral functions. Fixing the model parameters by the meson spectrum at zero temperature, we find that the mesons melt at temperatures between $90$ and $110$ MeV and the chiral transition occurs around $129$ MeV. We also provide a prediction for the hydrodynamic diffusion constant associated with a flavor current in the deconfined plasma.
title	Chiral transition and meson melting within improved holographic soft wall models
topic	High Energy Physics - Phenomenology High Energy Physics - Lattice High Energy Physics - Theory
url	https://arxiv.org/abs/2410.23471

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