5 papers · 1 filter
Vacuum Radiation in Conformally Invariant Quantum Field Theory
V. Aldaya, M. Calixto, J. M. Cervero
Although the whole conformal group can be considered as a symmetry in a classical massless field theory, the subgroup of special conformal transformations (SCT), usually…
Global restrictions to the Mixing Angle
M. Calixto, V. Aldaya, J. Guerrero
We provide the theoretic value 1/2 for the quantity , as opposite to the experimental value of , in the electro-weak gau…
Algebraic versus Topologic Anomalies
V. Aldaya, M. Calixto, J. Guerrero
Within the frame of a Group Approach to Quantization anomalies arise in a quite natural way. We present in this talk an analysis of the basic obstructions that can be found when we…
Algebraic Quantization on the Torus and Modular Invariance
J. Guerrero, V. Aldaya, M. Calixto
New features of systems with non-trivial topology such as fractional quantum numbers, inequivalent quantizations, good operators, topological anomalies, etc. are described in the f…
Group-Theoretical Determination of the Mixing Angle in the Electroweak Gauge Group
V. Aldaya, M. Calixto, J. Guerrero
The assumption that the Weinberg rotation between the gauge fields associated with the third component of the ``weak isospin" () and the hypercharge () proceeds in a natura…