Gravitational interactions of cosmic strings

Details Gravitational interactions of cosmic strings Gravitational interactions of cosmic strings

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.311..109h&link_type=abstract

Nature (ISSN 0028-0836), vol. 311, Sept. 13, 1984, p. 109-114.

Astronomy and Astrophysics

Astrophysics

135

Broken Symmetry, Galactic Clusters, Galactic Evolution, Gravitational Effects, String Theory, Yang-Mills Theory, Energy Dissipation, Gravitational Waves, Stochastic Processes, Vacuum

Scientific paper

Breaking a Yang-Mills symmetry at very high energy could lead to macroscopic structures in the vacuum called 'strings', which may be the cause of galaxy formation and clustering. Dissipative gravitational interactions of string loops can produce unusual astrophysical side effects. Such scenarios generally predict a stochastic background of gravitational radiation which should be observable using the millisecond pulsar 1937+21. Gravitational radiation recoil accelerates loops, but dynamical friction on ordinary matter tends to slow them down so they may be able to accrete matter. Internal oscillations of loops produce a time-varying shear perturbation which may lead to an observable heating of stellar or gaseous systems in their immediate neighbourhood.

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