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[en] Path integral quantization of dilaton gravity in two dimensions is applied to the CGHS model to the first nontrivial order in matter loops. Our approach is background independent as geometry is integrated out exactly. The result is an effective shift of the Killing norm: the apparent horizon becomes smaller. The Hawking temperature which is constant to leading order receives a quantum correction. As a consequence, the specific heat becomes positive and proportional to the square of the black hole mass. (author)
Journal
Journal of High Energy Physics; ISSN 1126-6708; 
; v. 07(2003); p. vp
; v. 07(2003); p. vp