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Dilaton and axion bremsstrahlung from collisions of cosmic (super)strings

E. Yu. Melkumova, D. V. Gal'tsov, K. Salehi

hep-tharXiv:hep-th/0612271

Abstract

We calculate dilaton and axion radiation generated in the collision of two straight initially unexcited strings and give a rough cosmological estimate of dilaton and axion densities produced via this mechanism in the early universe.

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