Gravitational radiation in massless-particle collisionsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 22 ноября 2015 г.
Аннотация:The angular and frequency characteristics of the gravitational radiation emitted in collisions of massless particles is studied perturbatively in the context of classical
General Relativity for small values of the ratio α ≡ 2r_S /b of the Schwarzschild radius
over the impact parameter. The particles are described with their trajectories, while the
contribution of the leading nonlinear terms of the gravitational action is also taken into
account. The old quantum results are reproduced in the zero frequency limit ω ≪ 1/b.
The radiation efficiency \epsilon ≡ E_rad /2E outside a narrow cone of angle α in the forward and backward directions with respect to the initial particle trajectories is given by α^2 and
is dominated by radiation with characteristic frequency ω ∼ O(1/r_S).