Zobrazeno 1 - 10
of 401
pro vyhledávání: '"Martellini, M"'
Autor:
Martellini, M., Rao, Jason
Skilled scientists are not immune to the appeal of terrorist groups, indeed recent studies indicate that engineers and medical doctors are over-represented within terrorist organizations. Also of particular concern with regard to the potential radica
Publikováno v:
JCAP 0303 (2003) 001
The quasi-isotropic inhomogeneous solution of the Einstein equations near a cosmological singularity in the form of a series expansion in the synchronous system of reference, first found by Lifshitz and Khalatnikov in 1960, is generalized to the case
Externí odkaz:
http://arxiv.org/abs/gr-qc/0301119
Autor:
Belgiorno, F., Martellini, M.
Publikováno v:
Int.J.Mod.Phys. D13 (2004) 739-770
We discuss in the framework of black hole thermodynamics some aspects relative to the third law in the case of black holes of the Kerr-Newman family. In the light of the standard proof of the equivalence between the unattainability of the zero temper
Externí odkaz:
http://arxiv.org/abs/gr-qc/0210026
Publikováno v:
Phys.Rev. D62 (2000) 084014
We study the problem of the quantization of the massive charged Dirac field on a naked Reissner-Nordstr\"{o}m background. We show that the introduction of an anomalous magnetic moment for the electron field allows a well--defined quantum theory for t
Externí odkaz:
http://arxiv.org/abs/gr-qc/0010049
Autor:
Belgiorno, F., Martellini, M.
Publikováno v:
Phys.Lett. B453 (1999) 17-22
We study some spectral features of the one-particle electron Hamiltonian obtained by separating the Dirac equation in a Kerr-Newman black hole background. We find that the essential spectrum includes the whole real line. As a consequence, there is no
Externí odkaz:
http://arxiv.org/abs/gr-qc/9811060
Publikováno v:
Phys.Rev. D59 (1999) 046005
Recently proposed by Hwang, Marnelius and Saltsidis zeta regularization of basic commutators in string theories is generalized to the string models with non-trivial vacuums. It is shown that implementation of this regularization implies the cancellat
Externí odkaz:
http://arxiv.org/abs/hep-th/9806202
Publikováno v:
Phys.Lett. B431 (1998) 127-134
Using the first order formalism (BFYM) of the Yang-Mills theory we show that it displays an embedded topological sector corresponding to the field content of the Topological Yang-Mills theory (TYM). This picture arises after a proper redefinition of
Externí odkaz:
http://arxiv.org/abs/hep-th/9803029
Publikováno v:
Phys.Lett. B418 (1998) 294-302
5-branes of nontrivial topology are associated in the Diaconescu-Hanany-Witten-Witten (DHWW) approach with the Seiberg-Witten (SW) theory of low-energy effective actions. There are two different "pictures", related to the IIA and IIB phases of M-theo
Externí odkaz:
http://arxiv.org/abs/hep-th/9706050
Autor:
Cattaneo, A. S., Cotta-Ramusino, P., Fucito, F., Martellini, M., Rinaldi, M., Tanzini, A., Zeni, M.
Publikováno v:
Commun.Math.Phys.197:571-621,1998
The classical action for pure Yang--Mills gauge theory can be formulated as a deformation of the topological $BF$ theory where, beside the two-form field $B$, one has to add one extra-field $\eta$ given by a one-form which transforms as the differenc
Externí odkaz:
http://arxiv.org/abs/hep-th/9705123
Publikováno v:
Phys.Lett.B404:94-100,1997
We discuss the quantum equivalence, to all orders of perturbation theory, between the Yang-Mills theory and its first order formulation through a second rank antisymmetric tensor field. Moreover, the introduction of an additional nonphysical vector f
Externí odkaz:
http://arxiv.org/abs/hep-th/9704034