Charge quantization of axion - dilaton black holes
Feb, 199312 pages
Published in:
- Phys.Rev.D 48 (1993) 742-747
e-Print:
- hep-th/9302109 [hep-th]
Report number:
- SU-ITP-93-3
Citations per year
Abstract:
We present axion-dilaton black-hole and multi-black-hole solutions of the low-energy string effective action. Under electric-magnetic duality rotations only the ``hair" (charges and asymptotic values of the fields) of our solutions is transformed. The functional form of the solutions is duality-invariant. Axion-dilaton black holes with zero entropy and zero area of the horizon form a family of stable particle-like objects, which we call {\it holons}. We study the quantization of the charges of these objects and its compatibility with duality symmetry. In general the spectrum of black-hole solutions with quantized charges is not invariant under but only under or one of its subgroups . Because of their transformation properties, the asymptotic value of the axion-dilaton field of a black hole may be associated with the modular parameter of some complex torus and the integer numbers that label its quantized electric and magnetic charges may be associated with winding numbers.- black hole: dilaton
- black hole: axion
- dimension: 4
- effective action: string
- energy: low
- symmetry: SL(2,R)
- duality: electromagnetic
- black hole: hair
- charge: quantization
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