Alejandro Cabo Montes de

ORCID: 0000-0001-9129-366X
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About
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Research Areas
  • Physics of Superconductivity and Magnetism
  • Quantum and electron transport phenomena
  • Particle physics theoretical and experimental studies
  • Quantum Chromodynamics and Particle Interactions
  • Black Holes and Theoretical Physics
  • Cosmology and Gravitation Theories
  • Relativity and Gravitational Theory
  • Advanced Thermodynamics and Statistical Mechanics
  • High-Energy Particle Collisions Research
  • Quantum, superfluid, helium dynamics
  • Advanced Condensed Matter Physics
  • Advanced Chemical Physics Studies
  • Statistical Mechanics and Entropy
  • Surface and Thin Film Phenomena
  • Cold Atom Physics and Bose-Einstein Condensates
  • Quantum Mechanics and Applications
  • Magnetic properties of thin films
  • Advancements in Semiconductor Devices and Circuit Design
  • Quantum Electrodynamics and Casimir Effect
  • Algebraic and Geometric Analysis
  • Advanced Physical and Chemical Molecular Interactions
  • Experimental and Theoretical Physics Studies
  • Quantum and Classical Electrodynamics
  • Spectroscopy and Quantum Chemical Studies
  • Nonlinear Dynamics and Pattern Formation

Instituto de Cibernética Matemática y Física
2012-2022

Max Planck Institute for Physics
2018

Ministerio de Ciencia, Tecnología y Medio Ambiente
2017

The Abdus Salam International Centre for Theoretical Physics (ICTP)
1997-2015

Universidade Federal do Pará
2012

Perimeter Institute
2009

McGill University
2009

University of Cienfuegos
2007

Pontificia Universidad Católica de Chile
2002-2007

European Organization for Nuclear Research
1992-2006

In this article we reviewed 5 cases of mayer rokitansky kuster hauser syndrome, which diagnosed in 2023-2024 our Radiodiagnosis department. We tried to elaborate the radiological features and importance early diagnosis rehabilitation syndrome.

10.36948/ijfmr.2025.v07i01.35636 article EN cc-by-sa International Journal For Multidisciplinary Research 2025-02-05

It is shown for a wide class of systems in the framework total Hamiltonian procedure that all first-class constraints generate canonical transformations connecting physically equivalent states. occurs whenever arising Dirac algorithm are effective when considered functional form as they appear consistency conditions. The property hereditary separation between first- and second-class also follows from above condition. General Poisson-brackets relations among representation used here obtained....

10.1103/physrevd.42.2726 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1990-10-15

Physical arguments related with the existence of black hole solutions having a non trapping interior are discussed. Massive scalar fields interacting gravity considered. Interior asymptotic showing field approaching constant value at horizon given. It is argued that coupled Einstein-Klein-Gordon equations can be satisfied in sense generalized functions after removing particular regularization designed for matching solution an external Scwartzschild spacetime. The appears as just avoiding...

10.1142/s0217751x99001019 article EN International Journal of Modern Physics A 1999-05-20

In both molecular physics and condensed matter theory, deeper understanding of the correlation energy density ${ϵ}_{c}(\mathbf{r})$ remains a high priority. By adopting L\"owdin's definition as difference between exact Hartree-Fock values, here we propose two alternative routes to define this. One these involves (HF) wave functions, while second requires coupling constant integration. As an analytical example first route, treat two-electron model atom Moshinsky, for which confinement...

10.1103/physreva.77.042504 article EN Physical Review A 2008-04-04

We re-consider the quantum mechanics of scale invariant potentials in two dimensions. The breaking invariance by effects is analyzed explicit evaluation phase shift and self-adjoint extension method. argue that reported literature for $\delta$(r) potential, an example not anomaly or mechanical symmetry breaking.

10.1119/1.18852 article EN American Journal of Physics 1998-03-01

The renormalized mean value of the corresponding components energy-momentum tensor for massive scalar fields coupled to an arbitrary gravitational field configuration having cylindrical symmetry are analytically evaluated using Schwinger-DeWitt approximation, up second order in inverse mass value. general results employed explicitly derive compact analytical expressions particular background black-string space-time. In case black string considered this work, we prove that a violation weak...

10.1103/physrevd.75.107501 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2007-05-09

We show that the combined effect of photon emission and Coulomb interactions may drive an exciton-polariton system towards a dynamical coherent state, even without phonon thermalization or any other relaxation mechanism. Exact diagonalization results for finite (a multilevel quantum dot interacting with lowest-energy mode microcavity) are presented in support this statement.

10.1103/physrevlett.98.167405 article EN Physical Review Letters 2007-04-19

The renormalized mean value of the quantum Lagrangian and corresponding components energy-momentum tensor for massive spinor fields coupled to an arbitrary gravitational field configuration having cylindrical symmetry are analytically evaluated using Schwinger-DeWitt approximation, up second order in inverse mass value. general results employed explicitly derive compact analytical expressions Energy-Momentum particular background black-string spacetime.

10.1103/physrevd.77.024044 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2008-01-28

Dirac's conjecture is proved for a general class of systems having only first-class constraints. In other words it shown that kind problem all the primary or secondary constraints generate equivalence transformations between physical states.

10.1088/0305-4470/19/5/017 article EN Journal of Physics A Mathematical and General 1986-04-01

Abstract The extension of the “proper time” method to statistical field theory is obtained. procedure used calculate “one loop” contribution thermodynamical potential in electrodynamics, when electron positron gas located a combination an inhomogeneous electrostatic and uniform magnetic one. Also, representation temperature Green function for this problem given.

10.1002/prop.19810291005 article EN Fortschritte der Physik 1981-01-01

Former results for a tight-binding (TB) model of CuO planes in La 2 4 are reinterpreted here to underline their wider implications. It is noted that physical systems being appropriately described by the TB can exhibit main strongly correlated electron system (SCES) properties, when they solved HF approximation, also allowing crystal symmetry breaking effects and noncollinear spin orientations orbitals. argued how simple 2D square lattice Coulomb interacting electrons insulator gaps pseudogap...

10.1142/s0217979214500271 article EN International Journal of Modern Physics B 2014-01-06

Expressions for SO(4) invariant Euclidean QCD generating functionals are introduced which should produce nonvanishing gluon condensates. We consider first the loop expansion of corresponding effectíve action searching a description differing from usual perturbation theory. At this level, we special free propagators have off-diagonal long range order. The calculation polarization tensor leads to mass term is proportional squared root finite value <G 2 >. summation all one-loop...

10.1142/s0217732395002568 article EN Modern Physics Letters A 1995-10-20

A particular initial state for the construction of perturbative expansion QCD is investigated. It formed as a coherent superposition zero momentum gluon pairs and shows Lorentz well global SU(3) symmetries. follows that ghost propagators determined by it, coincides with ones used in an alternative usual perturbation theory proposed previous work. Therefore, ability such procedure producing finite condensation parameter already first orders naturally explained. also this satisfies physicality...

10.1103/physrevd.62.074018 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 2000-09-01

This work expands the results and derivations presented in a recent letter. It is argued that symmetry breaking Hartree-Fock (HF) solutions of simple model Cu-O planes La2CuO4, are able to describe insulator antiferromagnetic characters this material. Then, classical primer Mott alternatively obtained here as an exact Slater within simplest first principles schemes. Moreover, pseudogap HF states also predicted. The maximal energy gap 100 meV over Fermi surface wavefunction, reasonably well...

10.3390/sym2010388 article EN cc-by Symmetry 2010-03-22

The infinitesimal canonical transformations which map solutions of the total Hamiltonian equations motion into each other are investigated. For that, generating function Ψ such should satisfy certain conditions. In general, is a depends on coordinates, momenta, and Lagrange multipliers λ. However, it shown that requirement independence sufficient for existence gauge invariant in formalism. It condition Poisson brackets between all primary first-class constraints linear combination latter...

10.1063/1.530275 article EN Journal of Mathematical Physics 1993-12-01

The density matrix $\ensuremath{\rho}$ of a model polariton system is obtained numerically from master equation which takes account pumping and losses. In the stationary limit, coherences between eigenstates Hamiltonian are 3 orders magnitude smaller than occupations, meaning that approximately diagonal in energy representation. A weakly distorted grand canonical Gibbs distribution fits well occupations.

10.1103/physrevlett.102.126404 article EN Physical Review Letters 2009-03-25

We present a generalization of Gibbs statistical mechanics designed to describe general class stationary and metastable equilibrium states. It is assumed that the physical system maximizes entropy functional S subject standard conditions plus an extra conserved constraint function F, imposed force remain in configuration. After requiring additivity for two quasi-independent subsystems, commutation new with density matrix ρ, it argued F should be homogeneous at least systems which spectrum...

10.1088/1742-5468/2011/02/p02012 article EN Journal of Statistical Mechanics Theory and Experiment 2011-02-07
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