Collision of high-energy closed strings: Formation of a ring-like apparent horizon - General Relativity and Quantum CosmologyReportar como inadecuado




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Abstract: We study collisions of two high-energy closed strings in the framework of$D$-dimensional general relativity. The model of a high-energy closed string isintroduced 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 assumedto coincide precisely. In this setup, we study the formation of two kinds ofapparent horizons AHs: the AH of topology $S^{D-2}$ the black hole AH andthe AH of topology $S^1-times S^{D-3}$ the black ring AH. These two AHs aresolved numerically and the conditions for the formation of the two AHs areclarified in terms of the ring radius $R$. Specifically, we demonstrate thatthe black ring AH forms for sufficiently large $R$. The effects of an impactparameter and the relative orientation of incoming strings in more generalcases are briefly discussed.



Autor: Hirotaka Yoshino, Tetsuya Shiromizu

Fuente: https://arxiv.org/







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