Fixed scalars and suppression of Hawking evaporation

Barak Kol, Arvind Rajaraman

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


For an extreme charged black hole some scalars take on a fixed value at the horizon determined by the charges alone. We call them fixed scalars. We find the absorption cross section for a low-frequency wave of a fixed scalar to be proportional to the square of the frequency. This implies a strong suppression of the Hawking radiation near extremality. We compute the coefficient of proportionality for a specific model.

Original languageAmerican English
Pages (from-to)983-986
Number of pages4
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number2
StatePublished - 1997
Externally publishedYes


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