Yang Mills Action
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Instantons in curved spaces / Instantons em espaços curvos
In this work we study instanton solutions of the Yang-Mills theory in Schwarzschild and Reissner-Nordstrom spaces with gauge group SU(2).Instantons are solutions to the classical field equations of Yang-Mills theory defined in a space with Riemannian (positive de finite)metric with finite action. We begin with a review of the geometric setting of Yang-Mills
Publicado em: 2010
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2. Aspectos não perturbativos das teorias de Yang-Mills no calibre abeliano maximal / Non-perturbative aspects of the Yang-Mills theories in the maximal Albelian gauge
In this, we study the nonperturbative effects associated to the presence of the horizon and to the condensation of local dimension two operators in an Eucledean SU(2)Yang-Mills theory quantized in the maximal Abelian gauge. Such effects are introduced in a way to preserve the properties of renormalizability and locality of the theory. The comparison with the
Publicado em: 2009
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3. Yang-Mills effective action from QCD at finite chemical potential
We present a construction of an effective Yang-Mills action for QCD, from the expansion of the fermionic determinant in terms of powers of the chemical potential at high temperature for the case of massless quarks. We analyze this expansion in the perturbative region and find that it gives extra spurious information. We propose for the non-perturbative secto
Brazilian Journal of Physics. Publicado em: 2007-03
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4. A local non-Abelian gauge invariant action stemming from the nonlocal operator FmuN(D²)-1FmuN
We report on the nonlocal gauge invariant operator of dimension two, FµN (D²)-1 FµN. We are able to localize this operator by introducing a suitable set of (anti)commuting antisymmetric tensor fields. Starting from this, we succeed in constructing a local gauge invariant action containing a mass parameter, and we prove the renormalizability to all orders
Brazilian Journal of Physics. Publicado em: 2007-03
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5. Solutions to Yang—Mills equations that are not self-dual
The Yang—Mills functional for connections on principle SU(2) bundles over S4 is studied. Critical points of the functional satisfy a system of second-order partial differential equations, the Yang—Mills equations. If, in particular, the critical point is a minimum, it satisfies a first-order system, the self-dual or anti-self-dual equations. Here, we exh
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6. Reduction of scattering to an invariant finite displacement in an ambient space-time
The scattering transformation S for a wave equation in Minkowski space M0 is reducible (rigorously in the classical case, necessarily partially heuristically in the nonlinear quantum case) to the action of a distinguished finite transformation ζ in the ambient universal cosmos M. M0 is invariantly imbedded in M, relative to any given point of observation, a