Physics
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992stin...9411692l&link_type=abstract
Unknown
Physics
Cosmology, String Theory, Universe, Collapse, Equations Of Motion, Loops, Minkowski Space, Oscillations
Scientific paper
The cosmic string loop equation is studied analytically during the radiation-dominated era in the Robertson-Walker universe. If the loops expand with Hubble flow at the time of formation of loops, the cosmic string loops occur always collapsing. We also discuss the initial radii Rs(t*) dependence of the lifetime taus without considering the oscillations, as a first approximation, where t* denotes the time of formation of loops. We find that the lifetime factor gamma = c taus/Rs(t*) is (pi)/2 in the little initial radius limit.
Li Xin-zhou
Zhang Jianzu
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