Moduli, scalar charges, and the first law of black hole thermodynamics
Jul, 1996
3 pages
Published in:
- Phys.Rev.Lett. 77 (1996) 4992-4995
e-Print:
- hep-th/9607108 [hep-th]
Report number:
- SU-ITP-96-35
Citations per year
Abstract:
We show that under variation of moduli fields the first law of black hole thermodynamics becomes , where are the scalar charges. We also show that the ADM mass is extremized at fixed , , when the moduli fields take the fixed value which depend only on electric and magnetic charges. It follows that the least mass of any black hole with fixed conserved electric and magnetic charges is given by the mass of the double-extreme black hole with these charges. Our work allows us to interpret the previously known observation that for all extreme black holes the moduli fields at the horizon take a value depending only on the electric and magnetic conserved charges: is such that the scalar charges .- string model
- moduli space
- black hole
- thermodynamics
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