Transplanckian bremsstrahlung and black hole productionстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Classical gravitational bremsstrahlung in particle collisions at transplanckian energies is studied in M(4) x T(d). The radiation efficiency epsilon epsilon(rad)/E(initial) is Computed in terms of the Schwarzschild radius rs(root s), the impact parameter b and the Lorentz boost factor gamma(cm) and found to be epsilon = C(d)(rs/b)(3d+3)gamma cm(2d+1), larger than previous estimates by several powers of gamma(cm) >> 1. This means that in the ultrarelativistic case radiation loss becomes significant already for b >> rs, so radiation damping must be taken into account in estimates of black hole production at transplanckian energies. The result is reliable for impact parameters in the overlap of gamma(v)r(S) < b < b(c), v = 1/2(d + 1), and b > lambda(c) with bc marking (for d not equal 0) the loss of the notion of classical trajectories and lambda(c) h/mc being the Compton length of the scattered particles. (C) 2010 Elsevier B.V. All rights reserved.