Zobrazeno 1 - 10
of 267
pro vyhledávání: '"Prata, J."'
Advanced nanomaterials with enhanced optical and photocatalytic properties for the photodegradation of organic pollutants, in particular pharmaceuticals and personal care products (PPCPs), were successfully prepared by a swift one-pot synthesis. Nano
Externí odkaz:
http://arxiv.org/abs/2201.08243
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:
Int.J.Mod.Phys. A28 (2013) 1350064
We consider a noncommutative description of graphene. This description consists of a Dirac equation for massless Dirac fermions plus noncommutative corrections, which are treated in the presence of an external magnetic field. We argue that, being a t
Externí odkaz:
http://arxiv.org/abs/1207.5820
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.174:012053,2009
One presents a phase-space noncommutative extension of Quantum Cosmology in the context of a Kantowski-Sachs (KS) minisuperspace model. We obtain the Wheeler-DeWitt (WDW) equation for the noncommutative system through the ADM formalism and a suitable
Externí odkaz:
http://arxiv.org/abs/0812.3488