Zobrazeno 1 - 10
of 287
pro vyhledávání: '"ROJAS, J. C."'
Publikováno v:
Phys. Rev. D 102, 056020 (2020)
We explore the conditions for chiral symmetry breaking in reduced (or pseudo) quantum electrodynamics at finite temperature in connection with graphene and other 2D-materials with an underlying Dirac behavior of the charge carriers. By solving the co
Externí odkaz:
http://arxiv.org/abs/2007.05652
We use the linear sigma model coupled to quarks to explore the location of the phase transition lines in the QCD phase diagram from the point of view of chiral symmetry restoration at high temperature and baryon chemical potential. We compute analyti
Externí odkaz:
http://arxiv.org/abs/1904.11905
Autor:
Carlomagno, J. P., Rojas, J. C.
We estimate the temperature dependence of the gluon condensate from the Polyakov loop effective potential. It is presented how this analytic approach provides a simple picture for the electric gluon condensate around the deconfinement temperature, sh
Externí odkaz:
http://arxiv.org/abs/1707.09312
Publikováno v:
Phys. Rev. D 96, 034007 (2017)
We study the correlation length between test quarks with the same electric and color charges in the Nambu--Jona-Lasinio model, considering thermal and magnetic effects. We extract the correlation length from the quark correlation function. The latter
Externí odkaz:
http://arxiv.org/abs/1706.04956
Autor:
Escalante, F., Rojas, J. C.
In this letter we study some relevant physical parameters of the massless Gross-Neveu model in a finite spatial dimension for different boundary conditions. It is considered the standard homogeneous Hartree Fock solution using zeta function regulariz
Externí odkaz:
http://arxiv.org/abs/1701.04657
Autor:
Ayala, Alejandro, Dominguez, C. A., Hernandez, L. A., Loewe, M., Raya, Alfredo, Rojas, J. C., Villavicencio, C.
Publikováno v:
Phys. Rev. D 94, 054019 (2016)
We study the thermo-magnetic properties of the strong coupling constant G and quark mass M entering the Nambu-Jona-Lasinio model. For this purpose, we compute the quark condensate and compare it to lattice QCD (LQCD) results to extract the behavior o
Externí odkaz:
http://arxiv.org/abs/1603.00833
Autor:
Pham, Thai Ha, Vogel, J., Sampaio, J., Vaňatka, M., Rojas, J. -C., Bonfim, M., Chaves, D. S., Choueikani, F., Ohresser, P., Otero, E., Thiaville, A., Pizzini, S.
Publikováno v:
EPL (Europhysics Letters) 113, 67001 (2016)
We carried out measurements of domain wall (DW) velocities driven by magnetic field pulses in symmetric Pt/Co/Pt and asymmetric Pt/Co/AlOx, Pt/Co/GdOx and Pt/Co/Gd trilayers with ultrathin Co layers and perpendicular magnetic anisotropy. In agreement
Externí odkaz:
http://arxiv.org/abs/1602.04144
Autor:
Droguett, B., Rojas, J. C.
We compute the Casimir energy which arises in a bi-dimensional surface due to the quantum fluctuations of a scalar field. We assume that the boundaries are irregular and the field obeys Dirichlet condition. We re-parametrize the problem to one which
Externí odkaz:
http://arxiv.org/abs/1312.7716
A three-dimensional harmonic oscillator with spin non-commutativity in the phase space is considered. The system has a regular symplectic structure and by using supersymmetric quantum mechanics techniques, the ground state is calculated exactly. We f
Externí odkaz:
http://arxiv.org/abs/1111.0511
Publikováno v:
Phys.Rev.D83:034033,2011
The hadronic parameters of pseudoscalar ($\eta_c$) and scalar ($\chi_c$) charmonium are determined at finite temperature from Hilbert moment QCD sum rules. These parameters are the hadron mass, leptonic decay constant, total width, and continuum thre
Externí odkaz:
http://arxiv.org/abs/1010.4172