Arbitrary States Of The Field
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Sistemas de partículas interagentes dependentes de tipo e aplicações ao estudo de redes de sinalização biológica / Type-dependent interacting particle systems and their applications in the study of signaling biological networks
We study type-dependent stochastic spin models proposed by Fernández et al., which were used to model biological signaling networks. The original modeling setup describes the macroscopic evolution of a finite-size spin-flip model with k types of spins with arbitrary number of internal states interacting through a non-reversible stochastic dynamics. In the t
Publicado em: 2011
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2. Densidade de energia e força de radiação sobre fronteiras em movimento para estados arbitrários do campo: aplicação ao estado coerente / Density of energy and radiation force on borders in movement for arbitrary states of the field: application to the coherent state
No presente trabalho foi considerado um campo escalar real não massivo em um espaço-tempo bidimensional, satisfazendo à condição de fronteira Dirichlet ou Neumann na posição instantânea de uma fronteira em movimento. Para uma lei de movimento relativística, foi mostrado que as condiçõoes de fronteira Dirichlet e Neumann produzem a mesma força de
Publicado em: 2008
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3. O efeito Casimir dinâmico e decoerência
In this thesis we first demonstrate that the inevitable action of the environment can be substantially weakened when considering appropriate nonstationary quantum systems. Beyond protecting quantum states against decoherence, an oscillating frequency can be engineered to make the system-reservoir coupling almost negligible. Differently from the program for e
Publicado em: 2008
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4. Sistemas para manipulação quantica em estado solido / Towards an implementation of quantum manipulation in solid states
This thesis proposes and implements a system for quantum information processing, focusing primarily on the associated instrumentation. The basic physical aspects for computation, such as the associated energy and Shannon s entropy, were revisited. InAs:GaAs quantum dots were elected as the physical system of choice for this implementation; in particular, the
Publicado em: 2008
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5. Initial states and the various long-time-behaviors of the unstable multilevel systems
The decaying behavior of both the survival S(t) and total P(t) probabilities for unstable multilevel systems at long times is investigated by using the N-level Friedrichs model. The long-time asymptotic-forms of both S(t) and P(t) are obtained for an arbitrary initial-state extending over the unstable levels. It is then clarified how the asymptotic forms dep
Brazilian Journal of Physics. Publicado em: 2005-06
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6. Um modelo consistente para o processo de fotocontagem contínua e medidas de emaranhamento de sistemas quânticos de variáveis contínuas.
This dissertation embraces two trends of research in modern quantum optics. The first of them is connected to the photodetection theory, particularly to the continuous measurement theory developed by Srinivas and Davies (SD) in 1980s, whose principal ingredient is the correct choice of the quantum jump superoperator. We deduce from first principles diff
Publicado em: 2005
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7. Comparative analysis of genetic variability among Candida albicans isolates from different geographic locales by three genotypic methods.
The objective of the present study was to conduct a comparative genotypic analysis of Candida albicans isolates from the United States, Europe, and Southeast Asia to determine whether differences between isolates might be associated with geographic locations. The genotypes of 86 unrelated isolates of C. albicans (from the United States and Europe) and 26 iso