Regionalização dos testes de Valor de Cultivo e Uso e da indicação de cultivares de soja - terceira Aproximação.

Marcos de referência. Proposta inicial. Revisões do modelo. Segunda Aproximação. Terceira Aproximação.bitstream/item/54939/1/Doc-330-OL1.pd

Boletim agrometeorológico mensal - novembro 2000.

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Boletim agrometeorológico mensal - dezembro 2000.

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Boletim agrometeorológico mensal - setembro 2000.

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Boletim agrometeorológico mensal - julho 2000.

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Supergraph Approach in a Higher-order LDE Calculation of the Effective Potential for F-type Broken SUSY

In this work, we adopt the simplest model that spontaneously breaks supersymmetry, namely, the minimal O'Raifeartaigh model. The effective potential is computed in the framework of the linear delta expansion (LDE) approach up to the order $\delta^2$, conjugated with superspace and supergraph techniques. The latter can be duly mastered even if supersymmetry is no longer exact and the efficacy of the superfield approach in connection with the LDE procedure is confirmed according to our investigation. That opens up a way for a semi-nonperturbative superspace computation which allows us to deal with spontaneously broken supersymmetric models and encourages us to go further and apply this treatment to the Minimal Supersymmetric Standard Model (MSSM) precision tests.Comment: 42 pages, 22 figures, text modified, new paragraph added in the conclusions, revtex