*East China Institute for Theoretical Physics, Shanghai 200237
School of Science, East China University of Scicnce and Technology, Shanghai 200237, and Department of Physics, Shanghai Teachers University, Shanghai 200234
Primordial Black Holes and Cosmic String Loop
CHENG Hong-bo*;LI Xin-zhou
*East China Institute for Theoretical Physics, Shanghai 200237
School of Science, East China University of Scicnce and Technology, Shanghai 200237, and Department of Physics, Shanghai Teachers University, Shanghai 200234
Abstract： The elliptic loop equation of cosmic string is studied in the Minkowski space and during the radiation-dominated era in the Robertson- Walker universe. A remarkable fact about this equation is that a loop may never contract to one with a Schwarzschild radius, if it is sufficiently non-circular.
1996, Vol. 13 
