Continuous Time Monte Carlo Simulations
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Comportamento crítico da produção de entropia em modelos com dinâmicas estocásticas competitivas / Critical behavior of entropy production in models with competitive stochastic dynamics
We study kinetic phase transitions and the critical behavior of the entropy production in spin models with nearest neighbor interactions subject to two Glauber dynamics, which simulate two thermal baths at different temperatures. In this way, it is assumed that the system corresponds to a continuous time Markov process which obeys the master equation. Thus,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/04/2011
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2. Estudos do transporte de partÃculas brownianas interagentes e de transiÃÃes de fases em modelos de spin quÃnticos
Nesta Tese, sÃo investigados dois temas de interesse atual, o transporte de partÃculas brownianas interagentes e as transiÃÃes de fase em sistemas magnÃticos quÃnticos. No primeiro, o transporte de partÃculas brownianas interagentes sujeitas a um potencial de substrato do tipo catraca foi investigado numericamente atravÃs da dinÃmica de Langevin. Me
Publicado em: 2008
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3. Comparação de modelos com censura intervalar em análise de sobrevivência / Comparison of interval-censored models in survival analysis
Interval-censored results when survival times are not exactly known, knowing only that they occur in an interval. Grouped survival data are particular cases of intervalcensored when individuals are evaluated in the same time-intervals, causing a great number of ties. A common procedure for the analysis this type of data is to ignore the nature of interval-ce
Publicado em: 2007
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4. Macro Response Monte Carlo algorithm evaluated through electron spectra. / Avaliação de algoritmo Macro Response Monte Carlo através dos espectros de elétrons
In radiotherapy the computer simulation elapsed time for treatment planning is still a prob- lem. Several techniques for electron transport variance reduction have been developed in order to speed up the calculations. Some of them are: Macro Monte Carlo (MMC), Response History Monte Carlo (RHMC) and Macro Response Monte Carlo (MRMC). All of them use a databa
Publicado em: 2006
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5. Propriedades críticas estáticas e dinâmicas de modelos com simetria contínua e do modelo Z(5) / Static and dynamic critical properties of models with continuous symmetry and of the Z(5) model
Neste trabalho, nós investigamos o comportamento crítico dinâmico de três modelos estatísticos utilizando simulações Monte Carlo em tempos curtos. Inicialmente, estudamos os modelos tridimensionais de dupla-troca e de Heisenberg. O expoente dinâmico de persistência global, bem como o expoente z são estimados através de duas técnicas. Para obter o
Publicado em: 2006
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6. Kinetic phase transition in the mixed-spin Ising model
In this work we studied a ferromagnetic mixed-spin Ising model including a single ion crystal-field term. The model system consists of two interpenetrating sublattices with spins sigma = 1/2 and S = 1. The spins sigma = 1/2 occupy the sites of one sublattice, their nearest-neighbours are spins S on the other sublattice, and vice versa. The system is in conta
Brazilian Journal of Physics. Publicado em: 2004-06
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7. Using three-color chromosome painting to test chromosome aberration models.
Ionizing radiation induces DNA double-strand breaks (DSB), which interact pairwise to produce chromosome aberrations. There have long been two main competing theories of such pairwise DSB-DSB interactions. The "classical" theory asserts that an unrepaired DSB makes two ends that separate within the cell nucleus, with each end subsequently able to join any si