48 citations · 410 across the 23 of their papers we have counts for
24 papers
Electromagnetic form factors of vector mesons in Einstein-dilaton holographic QCD
Alfonso Ballon-Bayona, Tobias Frederico, Luis A. H. Mamani +2
We investigate the electromagnetic form factors of the meson family within a holographic QCD framework based on Einstein-dilaton gravity with confining backgrounds. We obtain t…
Elliptical Wilson loops in Super Yang-Mills
Thales Azevedo, Alfonso Ballon-Bayona, Leonardo Pazito
We investigate elliptical Wilson loops in Super Yang--Mills theory at weak and strong coupling for small values of the eccentricity. We obtain analytical results for t…
Transport coefficients and quasinormal modes in Einstein-dilaton holographic QCD
Nairy A. Villarreal, Luis A. H. Mamani, Alfonso Ballon-Bayona +2
In this paper, we investigate the transport coefficients of a strongly coupled plasma in the context of holographic QCD models based on Einstein-dilaton gravity that are compatible…
Thermodynamics and DC conductivity of 2D anisotropic fluids from axion holography
Alfonso Ballon-Bayona, Jonathan P. Shock, Dimitrios Zoakos
We investigate a strongly coupled finite-density anisotropic fluid in dimensions dual to an asymptotically AdS black brane that is a solution of Einstein-Maxwell-Axion theory…
Chiral transition and meson melting within improved holographic soft wall models
Alfonso Ballon-Bayona, Sean Bartz, Luis A. H. Mamani +1
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 hologra…
Nucleons and vector mesons in a confining holographic QCD model
Alfonso Ballon-Bayona, Adão S. da Silva Junior
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 con…
A dynamical holographic QCD model for spontaneous chiral symmetry breaking and confinement
Alfonso Ballon-Bayona, Tobias Frederico, Luis A. H. Mamani +1
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 gr…
Magnetising the Super Yang-Mills plasma
Alfonso Ballon-Bayona, Jonathan P. Shock, Dimitrios Zoakos
We investigate the thermodynamics of the anisotropic magnetic black brane solution found by D'Hoker and Kraus arXiv:0908.3875. This solution is the gravity dual of a st…
Spontaneous chiral symmetry breaking in holographic soft wall models
Alfonso Ballon-Bayona, Luis A. H. Mamani, Diego M. Rodrigues
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 actio…
Effective holographic models for QCD: Thermodynamics and viscosity coefficients
Alfonso Ballon-Bayona, Luis A. H. Mamani, Alex S. Miranda +1
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…
Criticality from Einstein-Maxwell-dilaton holography at finite temperature and density
Alfonso Ballon-Bayona, Henrique Boschi-Filho, Eduardo Folco Capossoli +1
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 n…
Magnetic catalysis and the chiral condensate in holographic QCD
Alfonso Ballon-Bayona, Jonathan P. Shock, Dimitrios Zoakos
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…
Nonlinear realization of chiral symmetry breaking in holographic soft wall models
Alfonso Ballon-Bayona, Luis A. H. Mamani
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…
An effective holographic approach to QCD
Alfonso Ballon-Bayona, Henrique Boschi-Filho, Luis A. H. Mamani +2
We describe a holographic approach to QCD where conformal symmetry is broken explicitly in the UV by a relevant operator . The operator maps to a 5d scalar field, the dil…
Effective holographic models for QCD: glueball spectrum and trace anomaly
Alfonso Ballon-Bayona, Henrique Boschi-Filho, Luis A. H. Mamani +2
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 C…
A universal order parameter for Inverse Magnetic Catalysis
Alfonso Ballon-Bayona, Matthias Ihl, Jonathan P. Shock +1
We revisit the chiral transition in the finite density Sakai-Sugimoto model and find that, at fixed temperature , the magnetisation near the critical line acts as an or…
Unity of pomerons from gauge/string duality
Alfonso Ballon-Bayona, Robert Carcasses Quevedo, Miguel S. Costa
We develop a formalism where the hard and soft pomeron contributions to high energy scattering arise as leading Regge poles of a single kernel in holographic QCD. The kernel is obt…
Strong couplings and form factors of charmed mesons in holographic QCD
Alfonso Ballon-Bayona, Gastao Krein, Carlisson Miller
We extend the two-flavor hard-wall holographic model of Erlich, Katz, Son and Stephanov [Phys.\ Rev.\ Lett.\ {\bf 95}, 261602 (2005)] to four flavors to incorporate strange and cha…
Soft Pomeron in Holographic QCD
Alfonso Ballon-Bayona, Robert Carcassés Quevedo, Miguel S. Costa +1
We study the graviton Regge trajectory in Holographic QCD as a model for high energy scattering processes dominated by soft pomeron exchange. This is done by considering spin J fie…
Decay constants of the pion and its excitations in holographic QCD
Alfonso Ballon-Bayona, Gastao Krein, Carlisson Miller
We investigate the leptonic decay constants of the pion and its excitations with a 5-d holographic model for quantum chromodynamics. We prove numerically that the leptonic decay co…
Holographic deconfinement transition in the presence of a magnetic field
Alfonso Ballon-Bayona
We investigate the thermodynamics of the flavour sector of the Sakai-Sugimoto model in the presence of a magnetic field. Renormalizing the euclidean Dirac-Born-Infeld action in the…
DBI equations and holographic DC conductivity
Alfonso Ballon-Bayona, Cristine N. Ferreira, Victor J. Vasquez Otoya
We provide a simple method for writing the Dirac-Born-Infeld (DBI) equations of a Dp-brane in an arbitrary static background whose metric depends only on the holographic radial coo…
A chiral magnetic spiral in the holographic Sakai-Sugimoto model
Alfonso Ballon-Bayona, Kasper Peeters, Marija Zamaklar
We investigate the effect of a magnetic field on the vacuum of low-temperature QCD at large-N_c in the presence of a chiral chemical potential, using the holographic Sakai-Sugimoto…
Production of negative parity baryons in the holographic Sakai-Sugimoto model
Alfonso Ballon-Bayona, Henrique Boschi-Filho, Nelson R. F. Braga +2
We extend our investigation of resonance production in the Sakai-Sugimoto model to the case of negative parity baryon resonances. Using holographic techniques we extract the genera…