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Approach to Equilibrium for a Class of Random Quantum Models of Infinite Range
(SPRINGER, 2010)
We consider random generalizations of a quantum model of infinite range introduced by Emch and Radin. The generalizations allow a neat extension from the class l (1) of absolutely summable lattice potentials to the optimal ...
Generation of chiral solitons in antiferromagnetic chains by a quantum quench
(American Physical Society, 2013-11)
We analyze the time evolution of a magnetic excitation in a spin-12 antiferromagnetic Heisenberg chain after a quantum quench. By a proper modulation of the magnetic exchange coupling, we prepare a static soliton of total ...
Propiedades físicas de cadenas de espines mixtos
(2010-09-13)
En este trabajo se investigan las propiedades físicas de las cadenas de espines mixtos. Por medio de una teoría de campo medio y el grupo de renormalización de la matriz densidad (DMRG) se mostró que las cadenas de Ising ...
Nonclassical effects in a highly nonlinear generalized homogeneous Dicke model
(Academic Press Inc Elsevier Science, 2011-09)
An intensity dependent nonlinear coupling model of N two-level atoms (generalized Dicke model) interacting dispersively with a bimodal cavity field via two-photon transitions is investigated in a scenario where the rotating ...
Nonstationary quantum phenomena in cavity quantum electrodynamics and optomechanics
(Universidad Nacional de ColombiaBogotá - Ciencias - Doctorado en Ciencias - FísicaDepartamento de FísicaFacultad de CienciasBogotáUniversidad Nacional de Colombia - Sede Bogotá, 2020-08)
In this thesis, I present methods and techniques for the study and use of non- stationary quantum phenomena in cavity quantum electrodynamics and optomechanics. Thus, I introduce a multiple-scale perturbation technique ...