Testing effective string models of black holes with fixed scalars
- Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (United States)
We solve the problem of mixing between the fixed scalar and metric fluctuations. First, we derive the decoupled fixed scalar equation for the four-dimensional black hole with two different charges. We proceed to the five-dimensional black hole with different electric (one-brane) and magnetic (five-brane) charges, and derive two decoupled equations satisfied by appropriate mixtures of the original fixed scalar fields. The resulting greybody factors are proportional to those that follow from coupling to dimension (2,2) operators on the effective string. In general, however, the string action also contains couplings to chiral operators of dimension (1,3) and (3,1), which cause disagreements with the semiclassical absorption cross sections. Implications of this for the effective string models are discussed. {copyright} {ital 1997} {ital The American Physical Society}
- Research Organization:
- Princeton Univ., NJ (United States)
- DOE Contract Number:
- FG02-91ER40671
- OSTI ID:
- 538659
- Journal Information:
- Physical Review, D, Vol. 56, Issue 4; Other Information: PBD: Aug 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Universal low-energy dynamics for rotating black holes
General rotating black holes in string theory: Greybody factors and event horizons