Plasma energy loss into Kaluza-Klein modes
- Center for Particle Physics, University of Texas, Austin, Texas 78712 (United States)
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)
- Department of Physics, Southern Methodist University, Dallas, Texas 75275 (United States)
Recently, Barger et al. [Phys. Lett. B 461, 34 (1999)] computed energy losses into Kaluza-Klein modes from astrophysical plasmas in the approximation of zero density for the plasmas. We extend their work by considering the effects of finite density for two plasmon processes. Our results show that, for fixed temperature, the energy loss rate per cm3 is constant up to some critical density and then falls exponentially. This is true for transverse and longitudinal plasmons in both the direct and crossed channels over a wide range of temperature and density. A difficulty in deriving the appropriate covariant interaction energy at finite density and temperature is addressed. We find that, for the cases considered by Barger et al., the zero density approximation and the neglect of other plasmon processes is justified to better than an order of magnitude. (c) 2000 The American Physical Society.
- OSTI ID:
- 20217747
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 62, Issue 7; Other Information: PBD: 1 Oct 2000; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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