6 papers
Gauge Symmetry Breaking: Higgs-less Mass Generation and Radiation Phenomena
M. Calixto
Gauge symmetries generally appear as a constraint algebra, under which one expects all physical states to be singlets. However, quantum anomalies and boundary conditions introduce…
Central extensions and quantum physics
M. Calixto, V. Aldaya
The unitary implementation of a symmetry group of a classical system in the corresponding quantum theory entails unavoidable deformations $\TG$ of , namely, central extensio…
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 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…