Large photon productions in a gravitational collapsing
Abstract
We study a possible gravitational vacuumeffect, in which vacuumenergy variation is due to variation of gravitational field, vacuum state gains gravitational energy and releases it by spontaneous photon emissions. Based on the pathintegral representation, we present a general formulation of vacuum transition matrix and energymomentum tensor of a quantum scalar field theory in curved spacetime. Using analytical continuation of dimensionality of the phase space, we calculate the difference of vacuumenergy densities in the presence and absence of gravitational field. Using the dynamical equation of gravitational collapse, we compute the rate of vacuum state gaining gravitational energy. Computing the transition amplitude from initial vacuum state to final vacuum state in gravitational collapsing process, we show the rate and spectrum of spontaneous photon emissions for releasing gravitational energy. The possible connection of our study to the genuine origin of gamma ray bursts is discussed. We compare our idea with the Schwinger idea for Sonoluminiescence and contrast our scenario with the Hawking effect.
 Publication:

arXiv eprints
 Pub Date:
 May 2002
 DOI:
 10.48550/arXiv.hepph/0205091
 arXiv:
 arXiv:hepph/0205091
 Bibcode:
 2002hep.ph....5091X
 Keywords:

 Astrophysics;
 General Relativity and Quantum Cosmology;
 High Energy Physics  Phenomenology;
 High Energy Physics  Theory;
 Quantum Physics
 EPrint:
 38 pages and 3 figures