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5 results on '"de Abreu, E. M. C."'

1. Bose Symmetry and Chiral Decomposition of 2D Fermionic Determinants

Author

de Abreu, E. M. C., Banerjee, R., and Wotzasek, C.

Subjects
High Energy Physics - Theory
Abstract

We show in a precise way, either in the fermionic or its bosonized version, that Bose symmetry provides a systematic way to carry out the chiral decomposition of the two dimensional fermionic determinant. Interpreted properly, we show that there is no obstruction of this decomposition to gauge invariance, as is usually claimed. Finally, a new way of interpreting the Polyakov-Wiegman identity is proposed., Comment: LaTex file, 17 pages, Ref.(5) corrected, final version to appear in Nucl. Phys. B

Published
1997
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2. ON THE COVARIANTIZATION OF THE CHIRAL CONSTRAINT

Author

Neves, C., de Abreu, E. M. C., and Wotzasek, C.

Subjects
High Energy Physics - Theory
Abstract

We show that a complete covariantization of the chiral constraint in the Floreanini-Jackiw necessitates an infinite number of auxiliary Wess-Zumino fields otherwise the covariantization is only partial and unable to remove the nonlocality in the chiral boson operator. We comment on recent works that claim to obtain covariantization through the use of Batalin-Fradkin-Tyutin method, that uses just one Wess-Zumino field., Comment: Latex, 10 pages, no figures

Published
1995
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5. Non-Abelian BFFT embedding, Schrödinger quantization and the field-antifield anomaly of the nonlinear sigma model.

Author

de Abreu, E. M. C., Ananias Neto, J., Mendes, A. C. R., and Oliveira-Neto, G.

Subjects
*SIGMA particles, *QUANTIZATION (Physics), *EMBEDDINGS (Mathematics), *SCHRODINGER equation, *GAUGE field theory, *GROUND state (Quantum mechanics), *EXCITED states
Abstract

We have embedded the nonlinear sigma model in a non-Abelian gauge theory. After that as a first class-system, it was quantized using two different approaches: the functional Schrödinger method and the nonlocal field-antifield procedure. First, the quantization was performed with the functional Schrödinger method, for , obtaining the wave functionals for the ground and excited states. Second, using the well-known BV formalism, we have computed the one-loop anomaly. This result shows that the classical gauge symmetries, which appear due to the conversion via BFFT method, are broken at the quantum level. [ABSTRACT FROM AUTHOR]

Published
2016
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