Collision of high-energy closed strings: Formation of a ring-like apparent horizon

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dc.creatorYoshino, Hirotaka
dc.creatorShiromizu, Tetsuya
dc.date2007-06-30
dc.date2007-10-18
dc.date.accessioned2026-07-07T10:56:32Z
dc.date.available2026-07-07T10:56:32Z
dc.descriptionWe study collisions of two high-energy closed strings in the framework of $D$-dimensional general relativity. The model of a high-energy closed string is introduced as a {/it pp}-wave generated by a ring-shaped source with the radius $R$. At the instant of the collision, the positions of two strings are assumed to coincide precisely. In this setup, we study the formation of two kinds of apparent horizons (AHs): the AH of topology $S^{D-2}$ (the black hole AH) and the AH of topology $S^1/times S^{D-3}$ (the black ring AH). These two AHs are solved numerically and the conditions for the formation of the two AHs are clarified in terms of the ring radius $R$. Specifically, we demonstrate that the black ring AH forms for sufficiently large $R$. The effects of an impact parameter and the relative orientation of incoming strings in more general cases are briefly discussed.
dc.description22 pages, 9 figures, title modified, references added, published version
dc.identifierhttps://arxiv.org/abs/0707.0076
dc.identifierhttp://arxiv.org/abs/0707.0076
dc.identifierPhys.Rev.D76:084021,2007
dc.identifierdoi:10.1103/PhysRevD.76.084021
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186444
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleCollision of high-energy closed strings: Formation of a ring-like apparent horizon
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