Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Lunardi, J. T."'
We study the Birman-Schwinger operator for a self-adjoint realisation of the one-dimensional Hamiltonian with the Coulomb potential. We study both the case in which this Hamiltonian is defined on the whole real line and when it is only defined on the
Externí odkaz:
http://arxiv.org/abs/2405.08618
Publikováno v:
Class.Quant.Grav.22:3083-3092,2005
We investigate the conformal invariance of massless Duffin-Kemmer-Petiau theory coupled to riemannian space-times. We show that, as usual, in the minimal coupling procedure only the spin 1 sector of the theory -which corresponds to the electromagneti
Externí odkaz:
http://arxiv.org/abs/gr-qc/0311042
Publikováno v:
Class.Quant.Grav. 20 (2003) 2457
We study massless Duffin-Kemmer-Petiau (DKP) fields in the context of Einstein-Cartan gravitation theory, interacting via minimal coupling procedure. In the case of an identically vanishing torsion (Riemannian space-times) we show that there exists l
Externí odkaz:
http://arxiv.org/abs/gr-qc/0209083
Publikováno v:
Gen.Rel.Grav. 34 (2002) 1941-1951
We consider massive spin 1 fields, in Riemann-Cartan space-times, described by Duffin-Kemmer-Petiau theory. We show that this approach induces a coupling between the spin 1 field and the space-time torsion which breaks the usual equivalence with the
Externí odkaz:
http://arxiv.org/abs/gr-qc/0203068
Publikováno v:
Gen.Rel.Grav. 34 (2002) 491-504
Here we study the behaviour of spin 0 sector of the DKP field in spaces with torsion. First we show that in a Riemann-Cartan manifold the DKP field presents an interaction with torsion when minimal coupling is performed, contrary to the behaviour of
Externí odkaz:
http://arxiv.org/abs/gr-qc/0105122
Autor:
Lunardi, J. T.
We address the question about the velocity of signals carried by Bessel beams wave packets propagating in vacuum and having well defined wavefronts in time. We find that this problem is analogous to that of propagation of usual plane wave packets wit
Externí odkaz:
http://arxiv.org/abs/physics/0105097
Publikováno v:
Int.J.Mod.Phys. A17 (2002) 205-228
In this paper we consider the scalar sector of Duffin-Kemmer-Petiau theory in the framework of Epstein-Glaser causal method. We calculate the lowest order distributions for Compton scattering, vacuum polarization, self-energy and vertex corrections.
Externí odkaz:
http://arxiv.org/abs/hep-th/0008098
q-Deformed harmonic oscillator algebra for real and root of unity values of the deformation parameter is discussed by using an extension of the number concept proposed by Gauss, namely the Q-numbers. A study of the reducibility of the Fock space repr
Externí odkaz:
http://arxiv.org/abs/math/0003143
Publikováno v:
Phys.Lett. A268 (2000) 165-173
Two problems relative to the electromagnetic coupling of Duffin-Kemmer-Petiau (DKP) theory are discussed: the presence of an anomalous term in the Hamiltonian form of the theory and the apparent difference between the Interaction terms in DKP and Kle
Externí odkaz:
http://arxiv.org/abs/hep-th/9911254