Algebraic Quantum Field Theory
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. An euclidean approach as a method to study the Unruh effect / Uma estratégia euclidiana para o estudo do efeito Unruh
This paper proposes a Euclidean strategy to understand the Unruh effect. On that ground we first study it for free massless scalar fields the way it is usually presented to pliysicists, which is closer to Unruhs original work [32]. Then we infer the effect from an algebraic perspective. We study the proprieties and definitions of KklS states in order to unde
Publicado em: 2007
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2. Calculating the dimension of a Euclidian Quantum Gravity model / Cálculo da dimensão em um modelo de gravitação quântica euclidiana
This work had the intention of calculating the dimension of a Euclidian Quantum Gravity model which in based on the formalism of non commutative geometry. This work is a continuation of the article [4]. From [4] we know that using a commutative spectral triple allows us to generalize and treat ordinary geometry in a purely algebraic manner. From Non commutat
Publicado em: 2007
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3. Aspectos estruturais e dinâmicos da correspondência AdS/CFT: Uma abordagem rigorosa / Structural and Dynamical Aspects of the AdS/CFT Correspondence: a Rigorous Approach
Elaboramos um estudo detalhado de alguns aspectos d(e uma versão d)a correspondência AdS/CFT, conjeturada por Maldacena e Witten, entre teorias quânticas de campo num fundo gravitacional dado por um espaço-tempo assintoticamente anti-de Sitter (AAdS), e teorias quânticas de campos conformalmente covariantes no infinito conforme (no sentido de Penrose) d
Publicado em: 2007
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4. Classical trajectories and quantum field theory
The density matrix and the Wigner function formalism requires the doubling of the degrees of freedom in quantum mechanics (QM) and quantum field theory (QFT). The doubled degrees of freedom play the role of the thermal bath or environment degrees of freedom and are entangled with the system degrees of freedom. They also account for quantum noise in the fluct
Brazilian Journal of Physics. Publicado em: 2005-06
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5. 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.