Radiation from a class of string theoretic black holes

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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20 pages, Latex

Scientific paper

10.1103/PhysRevD.55.6181

The emission of a scalar with low energy $\omega$, from a $D (4\le D\le 8 )$ dimensional black hole with n charges is studied in both string and semiclassical calculations. In the lowest order in $\omega$, the weak coupling string and semiclassical calculations agree provided that the Bekenstein--Hawking formula is valid and the effective central charge $c_{eff}=6$ for any D. When the next order in $\omega$ is considered however, there is no agreement between the two schemes unless D=5, n=3 or D=4, n=4.

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