Buscar
Mostrando ítems 31-40 de 50
Efeitos de flutuações quânticas em um modelo vidro de spin com cluster
(Universidade Federal de Santa MariaBrasilFísicaUFSMPrograma de Pós-Graduação em FísicaCentro de Ciências Naturais e Exatas, 2019-05-29)
In this work we study the effects of quantum fluctuations in a disordered magnetic system.
We consider a cluster-spin Ising model with antiferromagnetic short range interactions (J0)
and disordered long range interactions ...
Evolutionary dynamics on rugged fitness landscapes: Exact dynamics and information theoretical aspects
(AMER PHYSICAL SOC, 2009)
The parallel mutation-selection evolutionary dynamics, in which mutation and replication are independent events, is solved exactly in the case that the Malthusian fitnesses associated to the genomes are described by the ...
Geometric phases and quantum phase transitions in open systems
(2008)
The relationship is established between quantum phase transitions and complex geometric phases for open quantum systems governed by a non-Hermitian effective Hamiltonian with accidental crossing of the eigenvalues. In ...
The LIFE certification methodology as a diagnostic tool of the environmental management system of the automotive industry
(2016-03-01)
We conducted a diagnosis of the environmental management system of the Brazilian auto parts industry, using the LIFE certification methodology (lasting initiative for earth) as a diagnostic tool. This certification recognizes ...
Temporal dynamics in systems of qubits coupled to a bosonic mode
(Universidad de los AndesFísicaFacultad de CienciasDepartamento de Física, 2021-12-13)
Through the numerical study of the properties of the temporal evolution of a state of a spin-boson system in the deep strong coupling regime, a rich structure of probability collapses and revivals is discovered. By analyzing ...
Strong-disorder Renormalization-group Study Of The One-dimensional Tight-binding Model
(American Physical Society, 2014)
On generalized synchronization of different-order chaotic systems: A submanifold approach
(2008)
The relationship is established between quantum phase transitions and complex geometric phases for open quantum systems governed by a non-Hermitian effective Hamiltonian with accidental crossing of the eigenvalues. In ...
Vidro de spin fermiônico em duas sub-redes com campo transverso: solução com quebra da simetria de réplicas
(Universidade Federal de Santa MariaBrasilFísicaUFSMPrograma de Pós-Graduação em FísicaCentro de Ciências Naturais e Exatas, 2007-06-01)
In the present work, a fermionic infinite-range Ising spin glass (SG) model with a transverse field Γ is studied. The model is analyzed in a one-lattice structure (quantum SG) and in a two-sublattice structure (SG/antife ...