Vacuum Radiation and Symmetry Breaking in Conformally Invariant Quantum Field Theory
| Autor: | Victor Aldaya, J. M. Cervero, Manuel Calixto |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
High Energy Physics - Theory
Physics Complex system FOS: Physical sciences Matemática Aplicada Statistical and Nonlinear Physics Invariant (physics) Radiation Cuantización de grupos Fórmulas uniformemente aceleradas General Relativity and Quantum Cosmology Theoretical physics High Energy Physics - Theory (hep-th) Vacio de la radiación Symmetry breaking Ajustamiento de las simetrías rotas Quantum field theory Mathematical Physics |
| Zdroj: | Repositorio Digital de la Universidad Politécnica de Cartagena instname Scopus-Elsevier |
| ISSN: | 1432-0916 0010-3616 |
| Popis: | The underlying reasons for the difficulty of unitarily implementing the whole conformal group $SO(4,2)$ in a massless Quantum Field Theory (QFT) are investigated in this paper. Firstly, we demonstrate that the singular action of the subgroup of special conformal transformations (SCT), on the standard Minkowski space $M$, cannot be primarily associated with the vacuum radiation problems, the reason being more profound and related to the dynamical breakdown of part of the conformal symmetry (the SCT subgroup, to be more precise) when representations of null mass are selected inside the representations of the whole conformal group. Then we show how the vacuum of the massless QFT radiates under the action of SCT (usually interpreted as transitions to a uniformly accelerated frame) and we calculate exactly the spectrum of the outgoing particles, which proves to be a generalization of the Planckian one, this recovered as a given limit. 29 pages, Latex, 1 figure, to appear in Commun. Math. Phys |
| Databáze: | OpenAIRE |
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