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Title Semiclassical collapse with tachyon field and barotropic fluid
Type JournalPaper
Keywords Gravitational Collapse, Loop Quantum Gravity, Singularity Avoidance
Abstract The purpose of this paper is to extend the analysis presented in Goswami et al. [ Phys. Rev. Lett. 96 031302 (2006)] by means of investigating how a specific type of loop (quantum) effect can alter the outcome of gravitational collapse. To be more concrete, a particular class of spherically symmetric spacetime is considered with a tachyon field \phi and a barotropic fluid constituting the matter content; the tachyon potential V(\phi) is assumed to be of the form \phi^{-2}. Within inverse triad corrections, we then obtain, for a semiclassical description, several classes of analytical as well as numerical solutions. Moreover, we identify a subset whose behavior corresponds to an outward flux of energy, thus avoiding either a naked singularity or a black hole formation.
Researchers Paulo Vargas Moniz (Fourth Researcher), Amir Hadi Ziaie (Third Researcher), Joao Marto (Second Researcher), Yaser Tavakoli (First Researcher)