1,751 research outputs found
Existence of Black Holes Due to Concentration of Angular Momentum
We present a general sufficient condition for the formation of black holes
due to concentration of angular momentum. This is expressed in the form of a
universal inequality, relating the size and angular momentum of bodies, and is
proven in the context of axisymmetric initial data sets for the Einstein
equations which satisfy an appropriate energy condition. A brief comparison is
also made with more traditional black hole existence criteria based on
concentration of mass.Comment: 8 pages; final versio
Veneziano Amplitude for Winding Strings
String configurations with nonzero winding number describe soliton string
states. We compute the Veneziano amplitude for the scattering of arbitrary
winding states and show that in the large radius limit the strings always
scatter trivially and with no change in the individual winding numbers of the
strings. In this limit, then, these states scatter as true solitons.Comment: 7 page
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