String-loop corrections to effective action and black-hole instabilities

Details String-loop corrections to effective action and black-hole instabilities String-loop corrections to effective action and black-hole instabilities

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stin...9525433b&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Black Holes (Astronomy), Bosons, Einstein Equations, String Theory, Correction, Fermions, Tachyons, Two Dimensional Models

Scientific paper

Following the ideas of Ellis, Mavromatos and Nanopoulos, to account for instability of 2D black-hole solution, we discuss possible imaginary string-loop corrections to the coefficient at the Einstein term in string effective action. In closed bosonic string theory, such corrections appear because of the tachyon contribution to the integration measure over the moduli. In superstring theory (in critical as well as in non-critical dimensions), no one-string-loop complex corrections to the Einstein term are generated and the mechanism for generating black-hole instabilities proposed above fails.

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