1,721,025 research outputs found
Manuel T. Podesta en la novela argentina del ochenta
No full textFil: Blasi, Alberto Oscar. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina
on consistency of non commutative Chern-Simons theory-JHEP 10:038, 2007
No full textWe consider the noncommutative extension of Chern-Simons theory. We show the the theory can be fully expanded in power series of the noncommutative parameter θ and that no non-analytical sector exists. The theory appears to be unstable under radiative corrections, but we show that the infinite set of instabilities, to all orders in and in θ, is confined to a BRS exact cocycle. We show also that the theory is anomaly free. The quantum theory cannot be written in terms of the Groenewald-Moyal star product, and hence doubts arise on the interpretation of the noncommutative nature of the underlying spacetime. Nonetheless, the deformed theory is well defined as a quantum field theory, and the beta function of the Chern-Simons coupling constant vanishes, as in the ordinary Chern-Simons theor
CHERN-SIMONS AND 2-DIMENSIONAL CONFORMAL FIELD-THEORIES IN A COVARIANT LAGRANGIAN APPROACH
No full textGeneral solution of linear vector supersymmetry
No full textWe give the general solution of the Ward identity for the linear vector supersymmetry which characterizes all topological models. Such so- lution, whose expression is quite compact and simple, greatly simplifies the study of theories displaying a supersymmetric algebraic structure, reducing to a few lines the proof of their possible finiteness. In particular, the co- homology technology usually involved for the quantum extension of these theories, is completely bypassed. The case of Chern-Simons theory is taken as an example
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