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The vacuum polarization around an axionic stringy black hole | | A. Carlini
; A. Treves
; F. Fucito
; M. Martellini
; | | Date: |
16 Jul 1992 | | Journal: | Phys.Lett. B297 (1992) 63-66 | | Subject: | hep-th | | Abstract: | We consider the effect of vacuum polarization around the horizon of a 4 dimensional axionic stringy black hole. In the extreme degenerate limit ($Q_a=M$), the lower limit on the black hole mass for avoiding the polarization of the surrounding medium is $Mgg (10^{-15}div 10^{-11})m_p$ ($m_p$ is the proton mass), according to the assumed value of the axion mass ($m_asimeq (10^{-3}div 10^{-6})~eV$). In this case, there are no upper bounds on the mass due to the absence of the thermal radiation by the black hole. In the nondegenerate (classically unstable) limit ($Q_a | | Source: | arXiv, hep-th/9207059 | | Services: | Forum | Review | PDF | Favorites | |
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