Longhi, Giorgio - Search Results - CERN Document Server

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Dynamical sectors of a relativistic two particle model / Dominici, Daniele (INFN, Florence ; Florence U.) ; Gomis, Joaquim (CERN ; ICC, Barcelona U. ; Barcelona U., ECM) ; Kamimura, Kiyoshi (Toho U.) ; Longhi, Giorgio (INFN, Florence ; Florence U.)
We reconsider a model of two relativistic particles interacting via a multiplicative potential, as an example of a simple dynamical system with sectors, or branches, with different dynamics and degrees of freedom.The presence or absence of sectors depends on the values of rest masses. Some aspects of the canonical quantization are described. [...]
arXiv:1312.1000; CERN-PH-TH-2013-284; ICCUB-13-243; CERN-PH-TH-2013-284; ICCUB-13-243.- 2014-02-03 - 9 p. - Published in : Phys. Rev. D 89 (2014) 045001 APS published version, local copy: PDF; Fulltext: PDF; External link: Preprint

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Space-time Vector Supersymmetry and Massive Spinning Particle / Casalbuoni, Roberto. (Florence U. ; INFN, Florence) ; Gomis, Joaquim (CERN ; Barcelona U., ECM ; ICC, Barcelona U.) ; Kamimura, Kiyoshi (Toho U.) ; Longhi, Giorgio (Florence U. ; INFN, Florence)
We construct the action of a relativistic spinning particle from a non-linear realization of a space-time odd vector extension of the Poincar\'e group. For particular values of the parameters appearing in the lagrangian the model has a gauge world-line supersymmetry.{As a consequence of this local symmetry there are BPS solutions in the model preserving 1/5 of the supersymmetries.} A supersymmetric invariant quantization produces two decoupled 4d Dirac equations..
arXiv:0801.2702; PH-TH-CERN-2007-243; UB-ECM-PF-07-36; TOHO-CP-0885; CERN-PH-TH-2007-243; UB-ECM-PF-07-36; Toho-CP-0885.- 2008 - 15 p. - Published in : JHEP 02 (2008) 094 Fulltext: JHEP02(2008)094 - PDF; arXiv:0801.2702 - PDF; SISSA/IOP Open Access article: PDF; External link: Fulltext

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Exotic Non-relativistic String / Casalbuoni, Roberto (Florence U. ; INFN, Florence ; GGI, Florence) ; Gomis, Joaquim (CERN ; Barcelona U., ECM) ; Longhi, Giorgio (Florence U. ; INFN, Florence)
We construct a classical non-relativistic string model in 3+1 dimensions. The model contains a spurion tensor field that is responsible for the non-commutative structure of the model. [...]
arXiv:0709.4385; CERN-PH-TH-07-160; UB-ECM-PF-07-20; CERN-PH-TH-2007-160; UB-ECM-TH-07-160.- 2007 - 15 p. - Published in : Phys. Rev. D 76 (2007) 126004 APS Published version, local copy: PDF; Fulltext: PDF; External link: Preprint

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17	Longhi, G

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