Saúl Hernández-Ortiz

The effective QCD phase diagram and the critical end point

Abstract We study the QCD phase diagram on the temperature T and quark chemical potential μ plane, modeling the strong interactions with the linear sigma model coupled to quarks. The phase transition line is found from the effective potential at finite T and μ taking into account the plasma screening effects. We find the location of the critical end point (CEP) to be ( μ CEP / T c , T CEP / T c ) ∼ ( 1.2 , 0.8 ) , where T c is the (pseudo)critical temperature for the crossover phase transition at vanishing μ . This location lies within the region found by lattice inspired calculations. The results show that in the linear sigma model, the CEPs location in the phase diagram is expectedly determined solely through chiral symmetry breaking. The same is likely to be true for all other models which do not exhibit confinement, provided the proper treatment of the plasma infrared properties for the description of chiral symmetry restoration is implemented. Similarly, we also expect these corrections to be substantially relevant in the QCD phase diagram.

Graphene transparency in weak magnetic fields

We carry out an explicit calculation of the vacuum polarization tensor for an effective low-energy model of monolayer graphene in the presence of a weak magnetic field of intensity

Bloch Oscillations: Inverse Problem

B

Light absorption in distorted graphene

perpendicularly aligned to the membrane. By expanding the quasiparticle propagator in the Schwinger proper time representation up to order

Prompt photon yield and elliptic flow from gluon fusion induced by magnetic fields in relativistic heavy-ion collisions

(eB)^2

Chiral Symmetry transition in the Linear Sigma Model with quarks: Counting effective QCD degrees of freedom from low to high temperature

, where

Atomic collapse in graphene: lost of unitarity

e

Thermomagnetic evolution of the QCD strong coupling

is the unit charge, we find an explicitly transverse tensor, consistent with gauge invariance. Furthermore, assuming that graphene is radiated with monochromatic light of frequency

Aspects of the pseudo Chiral Magnetic Effect in 2D Weyl-Dirac Matter

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Erratum: Prompt photon yield and elliptic flow from gluon fusion induced by magnetic fields in relativistic heavy-ion collisions [Phys. Rev. D 96 , 014023 (2017)]

along the external field direction, from the modified Maxwells equations we derive the intensity of transmitted light and the angle of polarization rotation in terms of the longitudinal (