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7 papers · 1 filter
Double beta decay of : the deformed limit
Jorge G. Hirsch, O. Castaños, P. O. Hess +1
The double beta decay of to the ground state and excited states of is analysed in the context of the pseudo SU(3) scheme. The results of this deformed limit a…
A Hopf Algebra Structure in Self-dual Gravity
Hugo Garcia-Compean, Laura E. Morales, Jerzy F. Plebanski
The two-dimensional non-linear sigma model approach to Self-dual Yang-Mills theory and to Self-dual gravity given by Q-Han Park is an example of the deep interplay between two and…
Relative Convolutions. I. Properties and Applications
Vladimir V. Kisil
To study operator algebras with symmetries in a wide sense we introduce a notion of {\em relative convolution operators} induced by a Lie algebra. Relative convolutions recover man…
Axisymmetric Stationary Solutions as Harmonic Maps
Tonatiuh Matos, Jerzy Plebanski
We present a method for generating exact solutions of Einstein equations in vacuum using harmonic maps, when the spacetime possesses two commutating Killing vectors. This method co…
No Quantum Super-Minisuperspace with
Riccardo Capovilla, Octavio Obregon
We show that the quantum super-minisuperspace of N=1 supergravity with has no non-trivial physical states for class A Bianchi models. Hence, in super quantum cosmology, t…
QED in external fields from the spin representation
Jose M. Gracia-Bondia, Joseph C. Varilly
Systematic use of the infinite-dimensional spin representation simplifies and rigorizes several questions in Quantum Field Theory. This representation permutes ``Gaussian'' element…