Conformal Field Theory
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Extensão do modelo Raise and Peel / Extension of the Raise and Peel model
O modelo raise and peel é um modelo estocástico unidimensional com absorção local e desorção não local. O modelo depende de um único parâmetro u que é a razão entre a taxa de absorção pela de dessorção. Em um valor especial deste parâmetro (u = 1) o modelo tem características interessantes. O espectro é descrito por uma teoria de campos con
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/07/2011
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2. Conformal field theory with two kinds of bosonic fields and two linear dilatons
We consider a two-dimensional conformal field theory which contains two kinds of the bosonic degrees of freedom. Two linear dilaton fields enable us to study a more general case. Various properties of the model such as OPEs, central charge, conformal properties of the fields and associated algebras will be studied.
Brazilian Journal of Physics. Publicado em: 2010-12
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3. Linear pertubations of black roles: stability, quasi-normal modes and tails / Perturbações lineares de buracos negros: estabilidade, modos quase-normais e caudas
Black holes have their proper oscillations, which are called the quasi-normal modes. The proper oscillations of astrophysical black holes can be observed in the nearest future with the help of gravitational wave detectors. Quasi-normal modes are also very important in the context of testing of the stability of black objects, the anti-de Sitter/ Conformal Fie
Publicado em: 2009
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4. On the trace anomaly and the energy-momentum conservation of quantum fields at D=2 in classical curved backgrounds
We study the conformal symmetry and the energy-momentum conservation of scalar field interacting with a curved background at D = 2. We avoid to incorporate the metric determinant into the measure of the scalar field to explain the conformal anomaly and the consequent energy-momentum conservation. Contrarily, we split the scalar field in two other fields, in
Brazilian Journal of Physics. Publicado em: 2004-06
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5. Comments on resolution of nonassociativity in SFT: an example from axioms of BCFT
It is known that the associativity of the star product of the open string field theory may be broken in the presence of the nontrivial closed string background. We give an argument that such an anomaly may be resolved by including Chan-Paton factors starting from the axioms of the rational conformal field theory.
Brazilian Journal of Physics. Publicado em: 2002-12
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6. Algebraic orbifold conformal field theories
The unitary rational orbifold conformal field theories in the algebraic quantum field theory and subfactor theory framework are formulated. Under general conditions, it is shown that the orbifold of a given unitary rational conformal field theory generates a unitary modular category. Many new unitary modular categories are obtained. It is also shown tha
The National Academy of Sciences.
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7. From the representation theory of vertex operator algebras to modular tensor categories in conformal field theory
National Academy of Sciences.
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8. Entropy, matter, and cosmology
The role of irreversible processes corresponding to creation of matter in general relativity is investigated. The use of Landau-Lifshitz pseudotensors together with conformal (Minkowski) coordinates suggests that this creation took place in the early universe at the stage of the variation of the conformal factor. The entropy production in this creation proce
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9. Explanation of parity nonconservation
Space inversion and other discrete symmetries are treated within the frame of a theory of fundamental forces based only on general considerations of causality, symmetry, and stability, without ad hoc differential equations. The basic space-time ˜M is the Einstein universe R1 × S3 as a causal (or conformal) rather than a pseudo-Riemannian manifold. Its conn