Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Ballon-Bayona, Alfonso"'
We present a simple holographic QCD model that provides a unified description of vector mesons and nucleons in a confining background based on Einstein-dilaton gravity. For the confining background we consider analytical solutions of the Einstein-dil
Externí odkaz:
http://arxiv.org/abs/2402.17950
In this paper, we present a holographic realization of spontaneous chiral symmetry breaking and confinement. The latter is realized by building a solution of 5d Einstein-dilaton gravity leading to a confining quark antiquark potential. The 4d current
Externí odkaz:
http://arxiv.org/abs/2308.07503
We investigate the thermodynamics of the anisotropic magnetic $\rm AdS_5$ black brane solution found by D'Hoker and Kraus arXiv:0908.3875. This solution is the gravity dual of a strongly coupled ${\cal N}=4$ Super Yang-Mills plasma in ${\mathbb R}^{3
Externí odkaz:
http://arxiv.org/abs/2203.00050
We investigate non-linear extensions of the holographic soft wall model proposed by Karch, Katz, Son and Stephanov [1] including non-minimal couplings in the five-dimensional action. The non-minimal couplings bring a new parameter $a_0$ which control
Externí odkaz:
http://arxiv.org/abs/2107.10983
Publikováno v:
Phys. Rev. D 104, 046013 (2021)
A finite temperature extension of the effective holographic models for QCD (EHQCD), proposed in Ref.[1], is investigated in the present work. EHQCD models are characterized by two parameters, the conformal dimension of the relevant operator that defo
Externí odkaz:
http://arxiv.org/abs/2103.14188
Autor:
Ballon-Bayona, Alfonso, Boschi-Filho, Henrique, Capossoli, Eduardo Folco, Rodrigues, Diego M.
We investigate consistent charged black hole solutions to the Einstein-Maxwell-Dilaton (EMD) equations that are asymptotically AdS. The solutions are gravity duals to phases of a non-conformal plasma at finite temperature and density. For the dilaton
Externí odkaz:
http://arxiv.org/abs/2006.08810
We investigate the effect of a non-zero magnetic field on the chiral condensate using a holographic QCD approach. We extend the model proposed by Iatrakis, Kiritsis and Paredes in arXiv:1010.1364 that realises chiral symmetry breaking dynamically fro
Externí odkaz:
http://arxiv.org/abs/2005.00500
Publikováno v:
Phys. Rev. D 102, 026013 (2020)
We investigate nonlinear extensions of the holographic soft wall model proposed by Karch, Katz, Son and Stephanov \cite{Karch:2006pv} with a positive quadratic dilaton. We consider a Higgs potential for the tachyonic field that brings a more natural
Externí odkaz:
http://arxiv.org/abs/2002.00075
Autor:
Ballon-Bayona, Alfonso, Boschi-Filho, Henrique, Mamani, Luis A. H., Miranda, Alex S., Zanchin, Vilson T.
We describe a holographic approach to QCD where conformal symmetry is broken explicitly in the UV by a relevant operator ${\cal O}$. The operator maps to a 5d scalar field, the dilaton, with a massive term. Implementing also the IR constraint found b
Externí odkaz:
http://arxiv.org/abs/1804.01579
Autor:
Ballon-Bayona, Alfonso, Boschi-Filho, Henrique, Mamani, Luis A. H., Miranda, Alex S., Zanchin, Vilson T.
Publikováno v:
Phys. Rev. D 97, 046001 (2018)
We investigate effective holographic models for QCD arising from five dimensional Dilaton-Gravity. The models are characterized by a dilaton with a mass term in the UV, dual to a CFT deformation by a relevant operator, and quadratic in the IR. The UV
Externí odkaz:
http://arxiv.org/abs/1708.08968