Semitransparency effects in the moving mirror model for Hawking radiation

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.125003· OSTI ID:21316554

Nicolaevici, Nistor ^[1]

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1. Department of Physics, West University of Timisoara, V. Parvan 4, 300223, Timisoara (Romania)

We discuss the particle production due to a semitransparent mirror accelerating on the trajectories which simulate the Hawking effect. We find in accordance with a previous result 3 that the number of emitted particles up to infinite times remains finite, but in contrast to the cited paper, we obtain that for large, but finite reflectivities of the mirror, the radiated spectrum is Bose-Einstein and not Fermi-Dirac. We compare the beta coefficients {beta}({omega}{sup '},{omega}) for the perfectly reflecting and the semitransparency case and point out the differences in the sector of large frequencies {omega}{sup '}. For the perfect mirror, the source of the infinite number of particles are the frequencies {omega}{sup '}{yields}{infinity}, while for the semitransparent one this contribution is eliminated due to the cutoff effects introduced by the finite barrier energy of the mirror.

• OSTI ID: 21316554
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSE-EINSTEIN STATISTICS
COMPARATIVE EVALUATIONS
FERMI STATISTICS
OMEGA PARTICLES
PARTICLE PRODUCTION
SPECTRA