Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Dias, N. C."'
Autor:
DIAS, N. C. S.
Publikováno v:
Repositório Institucional da UFESUniversidade Federal do Espírito SantoUFES.
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A esp
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Externí odkaz:
http://repositorio.ufes.br/handle/10/7849
Publikováno v:
SIAM J. Math. Anal. 50-5 (2018), pp. 5161-5197
We consider an arbitrary square integrable function $F$ on the phase space and look for the Wigner function closest to it with respect to the $L^2$ norm. It is well known that the minimizing solution is the Wigner function of any eigenvector associat
Externí odkaz:
http://arxiv.org/abs/1807.05635
A more general measurement disturbance uncertainty principle is presented in a Robertson-Schr\"odinger formulation. It is shown that it is stronger and having nicer properties than Ozawa's uncertainty relations. In particular is invariant under sympl
Externí odkaz:
http://arxiv.org/abs/1411.2146
Publikováno v:
J.Phys.Conf.Ser.314:012042,2011
A phase-space noncommutativity in the context of a Kantowski-Sachs cosmological model is considered to study the interior of a Schwarzschild black hole. Due to the divergence of the probability of finding the black hole at the singularity from a cano
Externí odkaz:
http://arxiv.org/abs/1101.0163
Publikováno v:
J.Phys.Conf.Ser.222:012033,2010
One considers phase-space noncommutativity in the context of a Kantowski-Sachs cosmological model to study the interior of a Schwarzschild black hole. It is shown that the potential function of the corresponding quantum cosmology problem has a local
Externí odkaz:
http://arxiv.org/abs/1012.1822
Publikováno v:
J.Math.Phys.51:072101,2010
We show that the deformation quantization of non-commutative quantum mechanics previously considered by Dias and Prata can be expressed as a Weyl calculus on a double phase space. We study the properties of the star-product thus defined, and prove a
Externí odkaz:
http://arxiv.org/abs/0911.1209
Publikováno v:
Commun.Math.Phys.299:709-740,2010
We study the properties of quasi-distributions or Wigner measures in the context of noncommutative quantum mechanics. In particular, we obtain necessary and sufficient conditions for a phase-space function to be a noncommutative Wigner measure, for a
Externí odkaz:
http://arxiv.org/abs/0907.4438
Publikováno v:
Phys.Rev.D80:124038,2009
We use the solutions of the noncommutative Wheeler-De Witt equation arising from a Kantowski-Sachs cosmological model to compute thermodynamic properties of the Schwarzschild black hole. We show that the noncommutativity in the momentum sector introd
Externí odkaz:
http://arxiv.org/abs/0907.1818
Publikováno v:
J.Phys.Conf.Ser.67:012058,2007
We review the main features of the Weyl-Wigner formulation of noncommutative quantum mechanics. In particular, we present a $\star$-product and a Moyal bracket suitable for this theory as well as the concept of noncommutative Wigner function. The pro
Externí odkaz:
http://arxiv.org/abs/hep-th/0612239
Publikováno v:
J.Math.Phys.47:082101,2006
We study the time evolution of the expectation value of the anharmonic oscillator coordinate in a coherent state as a toy model for understanding the semiclassical solutions in quantum field theory. By using the deformation quantization techniques, w
Externí odkaz:
http://arxiv.org/abs/hep-th/0507255