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13 papers · 1 filter
Higher-Order Differential Operators on a Lie Group and Quantization
V. Aldaya, J. Guerrero, G. Marmo
This talk is devoted mainly to the concept of higher-order polarization on a group, which is introduced in the framework of a Group Approach to Quantization, as a powerful tool to…
to One Loop in Chiral Perturbation Theory
P. Talavera, Ll. Ametller, J. Bijnens +2
The and amplitudes are discussed in the general context of Chiral Perturbation Theory (ChPT) to . Chiral loops are found to play a m…
Parity violation in quasielastic electron scattering from closed-shell nuclei
J. E. Amaro, J. A. Caballero, T. W. Donnelly +3
The electromagnetic and weak neutral current matrix elements that enter in the analysis of parity-violating quasielastic electron scattering are calculated using a continuum nuclea…
Absence of classical and quantum mixing
L. L. Salcedo
It is shown, under mild assumptions, that classical degrees of freedom dynamically coupled to quantum ones do not inherit their quantum fluctuations. It is further shown that, if t…
CP violation in multi-Higgs supersymmetric models
Manuel Masip, Andrija Rasin
We consider supersymmetric extensions of the standard model with two pairs of Higgs doublets. We study the possibility of spontaneous violation in these scenarios and present…
Physical Parameters and Renormalization of U(1)_a x U(1)_b Models
F. del Aguila, M. Masip, M. Perez-Victoria
We analize the structure of models with unbroken and spontaneously broken U(1)_a x U(1)_b gauge symmetry. We show that the quantum corrections to the 2N gauge charges, with N = #fe…