Browsing by Author "Asenjo, Felipe A."
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Asenjo, Felipe A.; Muñoz Gálvez, Víctor; Valdivia Hepp, Juan; Mahajan, Swadesh M. (AMER INST PHYSICS, 201101)Based on the onebody particleantiparticle Dirac theory of electrons, a set of relativistic quantum fluid equations for a spin half plasma is derived. The particleantiparticle nature of the relativistic particles is ...

Soto Eguibar, Francisco; Asenjo, Felipe A.; Hojman Guiñerman, Sergio; Moya Cessa, Héctor (Amer Inst Physics, 2021)In the MadelungBohm approach to quantum mechanics, we consider a time dependent phase that depends quadratically on position, and we show that it leads to a Bohm potential that corresponds to a time dependent harmonic ...

Hojman Guiñerman, Sergio; Asenjo, Felipe A. (American Physical Society, 2016)We exhibit difficulties of different sorts which appear when using the MathissonPapapetrou equations, in particular in the description of highly relativistic particles presented in R. Plyatsko and M. Fenyk [Phys. Rev. D ...

Asenjo, Felipe A.; Hojman Guinerman, Sergio Andrés (Springer, 2021)It is showed that complex scalar fields with a selfinteraction potential may propagate along null geodesics on isotropic flat FriedmannLemaitreRobertsonWalker universes with different timedependent scale factors. This ...

Line Shapes in Infrared Absorption by Solids and by Atomic or Molecular Species Embedded in Solids Lagos Infante, Miguel; Asenjo, Felipe A.; Hauyón, Roberto; Pastén, Denisse; Moya, Pablo S. (AMER CHEMICAL SOC, 20100715)When the target is in the solid state, most infrared spectral features are manifestly asymmetric; hence, a line shape function wellgrounded in theory is necessary to ascertain the net energy taken by the associated ...

Asenjo, Felipe A.; Hojman Guiñerman, Sergio (Springer, 2021)It is proved that accelerating nondiffracting gravitational Airy wavepackets are solutions of linearized gravity. It is also showed that Airy functions are exact solutions to Einstein equations for nonaccelerating ...

Hojman Guiñerman, Sergio; Asenjo, Felipe A. (American Institute of Physics, 2020)We present a phenomenological procedure of dealing with the COVID19 (coronavirus disease 2019) data provided by government health agencies of 11 different countries. Usually, the exact or approximate solutions of ...

Spinning massive test particles in cosmological and general static spherically symmetric spacetimes Zalaquett, Nicolás; Hojman Guiñerman, Sergio; Asenjo, Felipe A. (IOP Publishing, 2014)A Lagrangian formalism is used to study the motion of a spinning massive particle in Friedmann–Robertson–Walker and G¨odel spacetimes, as well as in a general Schwarzschildlike spacetime and in static spherically ...

Hojman Guiñerman, Sergio; Asenjo, Felipe A. (American Physical Society, 2015)The Einstein equations for an isotropic and homogeneous FriedmannRobertsonWalker universe in the presence of a quintessence scalar field are shown to be described in a compact way, formally identical to the dynamics of ...

Hojman Guiñerman, Sergio; Asenjo, Felipe A. (IOP, 2022)A unification in terms of exact solutions for massless KleinGordon, Dirac, Maxwell, RaritaSchwinger, Einstein, and bosonic and fermionic fields of any spin is presented. The method is based on writing all of the relevant ...