TY - JOUR 
A1 - Aldaya Valverde, Víctor
AU - Cerveró Santiago, José María
AU - Calixto Molina, Manuel
T1 - Vacuum Radiation and Symmetry Breaking in Conformally Invariant Quantum Field Theory
Y1 - 1999
SN - ISSN 0010-3616
UR - http://hdl.handle.net/10317/514
UR - arXiv:hep-th/9705049v2
AB - The underlying reasons for the difficulty of unitarily implementing the whole conformal group SO(4, 2) in a massless Quantum Field Theory (QFT) on the Minkowski space 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.
KW - Matemática Aplicada
KW - Vacio de la radiación
KW - Ajustamiento de las simetrías rotas
KW - Cuantización de grupos
KW - Fórmulas uniformemente aceleradas
LA - eng
PB - Springer Verlag
ER -