A5100774673- High-Energy Particle Collisions Research
- Cosmology and Gravitation Theories
- Quantum, superfluid, helium dynamics
- Quantum Chromodynamics and Particle Interactions
- Cold Atom Physics and Bose-Einstein Condensates
- Pulsars and Gravitational Waves Research
- Particle physics theoretical and experimental studies
- Geophysics and Gravity Measurements
- Atomic and Subatomic Physics Research
- Solar and Space Plasma Dynamics
- Graphene research and applications
- Black Holes and Theoretical Physics
- Physics of Superconductivity and Magnetism
- High-pressure geophysics and materials
- Quantum Dots Synthesis And Properties
- COVID-19 and healthcare impacts
- Thin-Film Transistor Technologies
- Theoretical and Computational Physics
- Noncommutative and Quantum Gravity Theories
- ZnO doping and properties
- Body Contouring and Surgery
- Advanced Physical and Chemical Molecular Interactions
- Topological Materials and Phenomena
- Ionosphere and magnetosphere dynamics
- Statistical Mechanics and Entropy
Universidad Nacional Autónoma de México
2002-2023
Universidad Autónoma de la Ciudad de México
2019
University of Cape Town
2018
The University of Texas at El Paso
2010-2012
Universidad Michoacana de San Nicolás de Hidalgo
2008-2010
Consejo Superior de Investigaciones Científicas
1994
Centro de Biología Molecular Severo Ochoa
1992
Universidad Autónoma de Madrid
1992
Instituto Politécnico Nacional
1989
We investigate the effects of anomalous magnetic moment (AMM) in equation state (EOS) a system charged fermions at finite density presence field. In region strong fields ($eB>{m}^{2}$), AMM is found from one-loop fermion self-energy. contrast to weak-field by Schwinger, field depends on Landau level and decreases with it. The EOS dense medium are investigated weak using appropriate expression for each case. what has been reported other works, we find that makes no significant contribution any value.
We study symmetry restoration at finite temperature in the theory of a charged scalar field interacting with constant, external magnetic field. compute effective potential including contribution from ring diagrams. show that weak case, presence produces stronger first order phase transition and for onset is lower, as compared to case without
Bulk and shear viscosity coefficients for systems composed of quasiparticles with medium-modified dispersion relations are determined within an effective kinetic theory approach Boltzmann-Vlasov type.Local conservation energy momentum, which is self-consistently embedded in the theory, implies thermal equilibrium thermodynamic consistency quasiparticle approaches.
Working in the linear sigma model with quarks, we compute finite-temperature effective potential presence of a weak magnetic field, including contribution pion ring diagrams and considering as classical field. In approximation where self-energy is computed perturbatively, show that there region parameter space effect to preclude phase transition from happening. Inclusion field has small effects however become more important system evolves lowest temperatures allowed analysis.
We show that the chiral-symmetry-broken phase of massless QED in presence a magnetic field exhibits strong paraelectricity. A large anisotropic electric susceptibility develops infrared region, where most fermions are confined to their lowest Landau level, and dynamical mass anomalous moment generated via catalysis mechanism. The nonperturbative nature this effect is reflected dependence on fine-structure constant. paraelectricity linked dipole moments particle-antiparticle pairs form chiral...
We study the symmetry breaking phenomenon in standard model during electroweak phase transition presence of a constant hypermagnetic field. compute finite temperature effective potential up to contribution ring diagrams weak field, high limit and show that under these conditions, becomes stronger first order.
We study symmetry restoration at finite temperature in the standard model during electroweak phase transition presence of a weak magnetic field. compute effective potential up to contribution ring diagrams, using broken degrees freedom, and keep track gauge parameter dependence results. show that under these conditions, becomes stronger first order.
We study the electron propagator in quantum electrodynamics one and two spatial dimensions presence of external electromagnetic fields. In this case, is not diagonal momentum space. obtain on basis eigenfunctions operator (γ⋅Π)2 terms which acquires a free form. Πμ canonical γμ are Dirac matrices. dimensions, we work with an irreducible representation Clifford algebra consider to all orders effects arbitrary magnetic field perpendicular plane motion electrons. then discuss special cases...
In this work we explore the effects of a weak magnetic field and thermal bath on decay process neutral scalar boson into two charged bosons. Our findings indicate that inhibits pair production, while temperature enhances it. The employed formalism allows us to isolate contribution fields in vacuum, leading separate analysis different ingredients. This is essential since analytical computation width requires some approximation results can be found literature are not always coincident. We...
We study the effects of primordial magnetic fields on inflationary potential in context a warm inflation scenario. The model, based global supersymmetry with new-inflation-type and coupling between inflaton heavy intermediate superfield, is already known to preserve flatness required for slow-roll conditions even after including thermal contributions. Here we show that field makes flatter, retarding transition rendering it smoother.
Post-deposition vacuum annealing of chemically deposited Bi2S3 thin films has been found to enhance the dark conductivity from approximately=10-7 Omega cm-1 approximately=102 -1 and photoconductivity approximately 10-5 cm-1. Such increase is attributed (i) an amorphous-to-crystalline transformation setting in at approximately=175 degrees C, confirmed by X-ray diffraction studies (ii) loss sulphur film during temperatures >200 absence this effect air/nitrogen annealing. In case air, competing...
Zinc oxide films, both intrinsic and doped with TbCl3, have been prepared by spray pyrolysis at atmospheric pressure, using air as the carrier gas. Photoluminescence (PL) studies show differing spectra from films 10 atomic per cent of TbCl3 in spraying solution. The PL a peak approximately 510 nm, while those 550 nm.
Employing Schwinger's proper-time method, we calculate the -condensate for massive Dirac fermions of charge e interacting with a uniform magnetic field in heat bath. We present general results arbitrary hierarchy energy scales involved, namely fermion mass m, strength and temperature T. Moreover, study particular regimes detail reproduce some calculated or anticipated earlier literature. also discuss possible applications our findings.
We study chiral symmetry breaking for relativistic fermions, described by a parity-violating Lagrangian in $2+1$-dimensions, the presence of heat bath and uniform external magnetic field. Working within their four-component formalism allows inclusion both parity-even -odd mass terms. Therefore, we can define two types fermion antifermion condensates. For given value field, there exist different critical temperatures which would render one these condensates identically zero, while other...
In this paper we calculate the non-perturbative Euler–Heisenberg Lagrangian for massless QED in a strong magnetic field H, where breaking of chiral symmetry is dynamically catalyzed by external via formation an electro-positron condensate. This condensate leads to generation dynamical parameters that have be found as solutions Schwinger–Dyson equations. Since electron–positron pairing mechanism leading mainly dominated contributions from infrared region momenta much smaller than eH,...
Photoluminescent In‐, Al‐, and Cu‐doped films have been prepared by spray pyrolysis using air as carrier gas at atmospheric pressure onto Pyrex glass slides, coated with , silicon oxide substrates. The impurification is achieved mixing the starting solution used for deposition of . All show polycrystalline characteristics which could be associated primarily to a wurtzite structure Also, presence chlorine detected in quantities that depend on parameters. photoluminescent spectra room...
We study the anisotropic neutrino emission from core of neutron stars induced by star's magnetic field. model as made out a magnetized ideal gas strange quark matter and implement conditions for stellar equilibrium in this environment. The calculation is performed without resorting to analytical simplifications temperature, density field values corresponding typical evolution. produces rocket effect that contributes kick velocity. find computed velocity lie within range observed values,...
In this work, we explore the effects of a weak magnetic field on decay process neutral scalar boson into pair charged fermions in vacuum. Since analytical computation width needs some approximation, following two different approaches, study low and high transverse momentum limits. Our findings indicate that effect depends kinematics particle.
We investigate the effect of an applied constant and uniform magnetic field in fine-structure massive massless QED. In QED, it is shown that a strong removes so called Landau pole becomes anisotropic having different values along transverse to direction. Contrary other results literature, we find always decreases with field. also study running coupling on electron mass. both cases dynamical mass field, what can be interpreted as inverse catalysis effect.
In this work we explore the effects that a possible primordial magnetic field can have on inflaton effective potential, taking as underlying model warm inflation scenario, based global supersymmetry with new-inflation-type potential. The decay scheme for is two-step process of radiation production, where couples to heavy intermediate superfields, which in turn interact light particles. context, consider both sectors, and light, are charged strong approximation fields. We find an analytical...
We show that the Mellin summation technique (MST) is a well-defined and useful tool to compute loop integrals at finite temperature in imaginary-time formulation of thermal field theory, especially when interested infrared limit such integrals. The method makes use Feynman parametrization which has been claimed have problems analytical continuation from discrete arbitrary complex values Matsubara frequency performed. without MST, are not intrinsic but instead, they arise as result (a)...
Abstract Magnetic fields appear everywhere in the Universe. Their widespread presence at high redshifts and very large scales suggests that their origin could be primordial. In particular, during inflationary epoch can certainly not ruled out. warm inflation scenario, coupling of inflaton to other bosonic fermionic gives rise dissipative effects modify dynamics. Since primordial magnetic have an effect on both effective potential decay process, contribution must considered together with...