Cosmic strings: the most paradoxical objects in general relativity.

Details Cosmic strings: the most paradoxical objects in general relativity. Cosmic strings: the most paradoxical objects in general relativity.

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989anpcs..14..109i&link_type=abstract

Journées Relativistes: Relativité générale, astrophysique et physique mathématique, p. 109 - 114

Mathematics

Logic

Cosmic Strings: General Relativity

Scientific paper

It is well known (or, at least, widely believed) that a loop of cosmic string exerts no gravitational force on a relatively stationary object placed very near the string filament, and in this sense is gravitationally massless. More remarkably, it has recently been stated that string loops must always be straight and cannot curve, at least on length scales smaller than the cosmological scale. This article reviews recent progress in understanding the gravitational dynamics of strings, and addresses the question of how they contrive to have mass without mass and curvature without curvature.

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