Charged Dilatonic Black Hole and Hawking Radiation in Two Dimensions

Abstract

We consider Callan, Giddings, Harvey and Strominger's (CGHS) two dimensional dilatonic gravity with electromagnetic interactions. This model can be also solved classically. Among the solutions describing static black holes, there exist extremal solutions which have zero temperatures. In the extremal solutions, the space-time metric is not singular. We also obtain the solutions describing charged matter (chiral fermions) collapsing into black holes. Through the collapsing, not only future horizon but past horizon is also shifted. The quantum corrections including chiral anomaly are also discussed. In a way similar to CGHS model, the curvature singularity also appeared, except extremal case, when the matter collapsing. The screening effects due to the chiral anomaly have a tendency to cloak the singularity

15pp

References in corpus (3)

• Evanescent Black Holes
• Are Horned Particles the Climax of Hawking Evaporation?
• Charged Black Holes in Two-Dimensional String Theory

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• Semi-classical Approach to Charged Dilatonic Black Hole in Two Dimensions
• Trace anomaly induced effective action and 2d black holes for dilaton coupled supersymmetric theories
• Exact soluble two-dimensional charged wormhole
• Constraints in two-dimensional Dilaton Gravity with Fermions
• Dilaton-Maxwell gravity with matter near two dimensions
• Black Hole Physics from Two Dimensional Dilaton Gravity based on $SL(2,R)/U(1)$ Coset Model