Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-12-14
J.Phys.Conf.Ser.259:012035,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
Talk at 16th International Symposium on Particles, Strings and Cosmology (PASCOS 2010), Valencia, Spain, July 19-23, 2010
Scientific paper
10.1088/1742-6596/259/1/012035
We develop the theory of interaction of classical plasma with Kaluza-Klein (KK) gravitons in the ADD model of TeV-scale gravity. Plasma is described within the kinetic approach as the system of charged particles and Maxwell field both confined on the brane. Interaction with multidimensional gravity living in the bulk with $n$ compact extra dimensions is introduced within the linearized theory. The KK gravitons emission rates are computed taking into account plasma collective effects through the two-point correlation functions of the fluctuations of the plasma energy-momentum tensor. Apart from known mechanisms (such as bremsstrahlung and gravi-Primakoff effect) we find essentially collective channels such as the coalescence of plasma waves into gravitons which may be manifest in turbulent plasmas. Our results indicate that commonly used rates of the KK gravitons production in stars and supernovae may be underestimated.
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