Mass loss and longevity of gravitationally bound oscillating scalar lumps (oscillatons) in D dimensions
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Fodor-2010-Mass loss and longev.pdf
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Author(s)
Fodor, Gyula
Forgacs, Peter
Mezei, Mark Koppany
Date Issued
March 2010
Journal
Physical Review D
Publisher
American Physical Society
Citation
Fodor, Gyula, Peter Forgacs, and Mark Mezei. "Mass loss and longevity of gravitationally bound oscillating scalar lumps (oscillatons) in D dimensions." Physical Review D 81.6 (2010): 064029. © 2010 The American Physical Society
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.81.064029
