The Noncommutative Anandan's Quantum Phase

In this work we study the noncommutative nonrelativistic quantum dynamics of a neutral particle, that possesses permanent magnetic and electric dipole momenta, in the presence of an electric and magnetic fields. We use the Foldy-Wouthuysen transformation of the Dirac spinor with a non-minimal coupling to obtain the nonrelativistic limit. In this limit, we will study the noncommutative quantum dynamics and obtain the noncommutative Anandan's geometric phase. We analyze the situation where magnetic dipole moment of the particle is zero and we obtain the noncommutative version of the He-McKellar-Wilkens effect. We demonstrate that this phase in the noncommutative case is a geometric dispersive phase. We also investigate this geometric phase considering the noncommutativity in the phase space and the Anandan's phase is obtained.Comment: 15 pages, revtex4, version to appear in Physical Review

Uma nova proposta de solução para problemas de localização usando algoritmos genéticos e relaxação lagrangeana/surrogate.

Uma descrição matemática sobre os problemas das P-medianas. Algoritmo Genético Construtivo. A relaxação lagrangeana/surrogate. Resultados obtidos. O AGC aplicado ao problema das P-medianas. A relaxação lagrangeana/surrogate (lagsur) aplicado ao problema das P-medianas. Conclusões e comentários.bitstream/item/76660/1/CNPTIA-COM.TEC.-8-00.pd