Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Sorace, Emanuele"'
Autor:
Giachetti, Riccardo, Sorace, Emanuele
Motivated by the recent experimental measures of the 2p-states fine splitting of the muonic He4 ion [1], we think it may have some interest to present an independent calculation in terms of the two-body relativistic equation for a scalar and a fermio
Externí odkaz:
http://arxiv.org/abs/2111.06674
Autor:
Giachetti, Riccardo, Sorace, Emanuele
We revisit the derivation of the covariant two-body scalar-fermion equation with a Coulomb interaction, presented in a previous paper. We show that it can be given the formal aspect of a Dirac equation, but for the fact that the eigenvalue is also co
Externí odkaz:
http://arxiv.org/abs/2012.14299
Autor:
Giachetti, Riccardo, Sorace, Emanuele
The relativistic quantum mechanics of two interacting particles is considered. We first present a covariant formulation of kinematics and of reduced phase space, giving a short outline of the classical results. We then quantize the systems for the sc
Externí odkaz:
http://arxiv.org/abs/1810.10617
Autor:
Sorace, Emanuele
Publikováno v:
Annales Henri Poincare 3 (2002) 659-671
A general method to easily build global and relative operators for any number n of elementary systems if they are defined for 2 is presented. It is based on properties of the morphisms valued in the tensor products of algebras of the kinematics and i
Externí odkaz:
http://arxiv.org/abs/hep-th/0205023
Publikováno v:
Phys.Lett. B302 (1993) 419-422
In this letter we derive a deformed Dirac equation invariant under the k-Poincare` quantum algebra. A peculiar feature is that the square of the k-Dirac operator is related to the second Casimir (the k-deformed squared Pauli-Lubanski vector). The ``s
Externí odkaz:
http://arxiv.org/abs/hep-th/9212065
Publikováno v:
EPJ Web of Conferences, Vol 137, p 06024 (2017)
We calculate some radiative decays of Bottomonium in a covariant scheme for two interacting fermions. We present their branching ratios and their absolute widths. A comparison with experimental data shows a good agreement with our results. Some decay
Externí odkaz:
https://doaj.org/article/3dc595a897a64609965bfc7cfa6bbac8
Autor:
Giachetti, Riccardo, Physics Department, University of Firenze, Giachetti@fiinfnit, E-mail: giachetti@fi.infn.it, Sorace, Emanuele, Sezione di Firenze, I.N.F.N., Sorace@fiinfnit, E-mail: sorace@fi.infn.it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______310::aa23c3d29c13ddb159602fad4c6f4df7
http://hdl.handle.net/2158/1036441
http://hdl.handle.net/2158/1036441
Akademický článek
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Autor:
Giachetti, Riccardo, Sorace, Emanuele
Publikováno v:
AIP Conference Proceedings; 2007, Vol. 892 Issue 1, p352-354, 3p, 1 Chart