MULTISTRING SOLUTIONS IN INFLATIONARY SPACETIMES

Abstract

Multistring solutions of the string equations of motion are found for inflationary spacetimes with expansion factor $R(η)\propto η^k$ for any $k<0$ and $η$ conformal time. If $0>k>-1$ only two-string solutions can be found within our ansatz, whereas for $k=-1-1/n$, with $n=1,2,\ldots$, multistring solutions exist with an infinite number of strings [In the special case $k=-2$ we recover de Sitter spacetime where multistring solutions were first found].