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Author Asenjo, F.A.; Mahajan, S.M. pdf  doi
openurl 
  Title Relativistic quantum vorticity of the quadratic form of the Dirac equation Type
  Year 2015 Publication Physica Scripta Abbreviated Journal Phys. Scr.  
  Volume 90 Issue 1 Pages 4 pp  
  Keywords relativistic quantum mechanics; hydrodynamical version; Feynman-GellMann equation  
  Abstract We explore the fluid version of the quadratic form of the Dirac equation, sometimes called the Feynman-Gell-Mann equation. The dynamics of the quantum spinor field is represented by equations of motion for the fluid density, the velocity field, and the spin field. In analogy with classical relativistic and non-relativistic quantum theories, the fully relativistic fluid formulation of this equation allows a vortex dynamics. The vortical form is described by a total tensor field that is the weighted combination of the inertial, electromagnetic and quantum forces. The dynamics contrives the quadratic form of the Dirac equation as a total vorticity free system.  
  Address [Asenjo, Felipe A.] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Santiago, Chile, Email: felipe.asenjo@uai.cl  
  Corporate Author Thesis  
  Publisher Iop Publishing Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0031-8949 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000349301500001 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 458  
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Author Hojman, S.A.; Asenjo, F.A. doi  openurl
  Title Classical and Quantum Dispersion Relations Type
  Year 2020 Publication Physica Scripta Abbreviated Journal Phys. Scr.  
  Volume 95 Issue 8 Pages 7 pp  
  Keywords Quantum Hamilton-Jacobi equation; Bohm potential; dispersion relation  
  Abstract It is showed that, in general, classical and quantum dispersion relations are different due to the presence of the Bohm potential. There are exact particular solutions of the quantum (wave) theory which obey the classical dispersion relation, but they differ in the general case. The dispersion relations may also coincide when additional assumptions are made, such as WKB or eikonal approximations, for instance. This general result also holds for non-quantum wave equations derived from classical counterparts, such as in ray and wave optics, for instance. Explicit examples are given for covariant scalar, vectorial and tensorial fields in flat and curved spacetimes.  
  Address [Hojman, Sergio A.] Univ Adolfo Ibanez, Fac Artes Liberales, Dept Ciencias, Santiago 7491169, Chile, Email: sergio.hojman@uai.cl;  
  Corporate Author Thesis  
  Publisher Iop Publishing Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0031-8949 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000543208700001 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 1184  
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Author Qadir, A.; Asenjo, F.A.; Mahajan, S.M. pdf  doi
openurl 
  Title Magnetic field seed generation in plasmas around charged and rotating black holes Type
  Year 2014 Publication Physica Scripta Abbreviated Journal Phys. Scr.  
  Volume 89 Issue 8 Pages 7 pp  
  Keywords seed magnetic field; general relativistic drive; Kerr metric  
  Abstract Previous work by the authors introduced the possibility of generating seed magnetic fields by spacetime curvature and applied it in the vicinity of a Schwarzschild black hole. It was pointed out that it would be worthwhile to consider the effect in other background geometries and particularly in the vicinity of a rotating black hole, which is generically to be expected, astrophysically. In this paper that suggestion is followed up and we calculate generated magnetic field seed due to Reissner-Nordstrom and Kerr spacetimes. The conditions for the drive for the seed of a magnetic field is obtained for charged black holes, finding that in the horizon the drive vanishes. Also, the psi N-force produced by the Kerr black hole is obtained and its relation with the magnetic field seed is discussed, producing a more effective drive.  
  Address [Qadir, Asghar] Natl Univ Sci & Technol, Ctr Adv Math & Phys, Islamabad 4400, Pakistan, Email: aqadirmath@yahoo.com  
  Corporate Author Thesis  
  Publisher Iop Publishing Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0031-8949 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000343295000004 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 469  
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