Mass loss and longevity of gravitationally bound oscillating scalar lumps (oscillatons) in D dimensions

Journal Article · Mon Mar 15 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.064029· OSTI ID:21409413

Fodor, Gyula; Forgacs, Peter ^[1]; Mezei, Mark ^[2]

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1. MTA RMKI, H-1525 Budapest 114, P.O. Box 49 (Hungary)
2. Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

Spherically symmetric oscillatons (also referred to as oscillating soliton stars) i.e. gravitationally bound oscillating scalar lumps are considered in theories containing a massive self-interacting real scalar field coupled to Einstein's gravity in 1+D dimensional spacetimes. Oscillations are known to decay by emitting scalar radiation with a characteristic time scale which is, however, extremely long, it can be comparable even to the lifetime of our universe. In the limit when the central density (or amplitude) of the oscillaton tends to zero (small-amplitude limit) a method is introduced to compute the transcendentally small amplitude of the outgoing waves. The results are illustrated in detail on the simplest case, a single massive free scalar field coupled to gravity.

• OSTI ID: 21409413
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 6 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
DECAY
DENSITY
GRAVITATION
LIFETIME
OSCILLATIONS
PARTICLE DECAY
PHYSICAL PROPERTIES
SCALAR FIELDS
SPACE-TIME
STARS
SYMMETRY
UNIVERSE