Article

# Rotating Charged Black Hole Solution in Heterotic String Theory

Physical Review Letters (Impact Factor: 7.73). 04/1992; DOI: 10.1103/PhysRevLett.69.1006

Source: arXiv

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**ABSTRACT:**We investigate charged black holes coupled to a massive dilaton. It is shown that black holes which are large compared to the Compton wavelength of the dilaton resemble the Reissner-Nordstr\"om solution, while those which are smaller than this scale resemble the massless dilaton solutions. Black holes of order the Compton wavelength of the dilaton can have wormholes outside the event horizon in the string metric. Unlike all previous black hole solutions, nearly extremal and extremal black holes (of any size) repel each other. We argue that extremal black holes are quantum mechanically unstable to decay into several widely separated black holes. We present analytic arguments and extensive numerical results to support these conclusions. Comment: 36 p., (one reference added, minor typos), UCSBTH-92-17, YCTP-92-P37Nuclear Physics B 10/1992; · 4.33 Impact Factor - [Show abstract] [Hide abstract]

**ABSTRACT:**Taking energy conservation and angular momentum conservation into account, the tunneling radiation characteristics of stationary axisymmetric Sen black hole is studied in this paper with the quantum tunneling method and the results show that the tunneling rate of particle at the event horizon of the black hole is relevant to Bekenstein–Hawking entropy and that the radiation spectrum is not strictly pure thermal.International Journal of Theoretical Physics 04/2006; 45(5):965-972. · 1.09 Impact Factor -
##### Article: Phantom black holes and sigma models

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**ABSTRACT:**We construct static multicenter solutions of phantom Einstein-Maxwell-dilaton theory from null geodesics of the target space, leading to regular black holes without spatial symmetry for certain discrete values of the dilaton coupling constant. We also discuss the three-dimensional gravitating sigma models obtained by reduction of phantom Einstein-Maxwell, phantom Kaluza-Klein and phantom Einstein-Maxwell-dilaton-axion theories. In each case, we generate by group transformations phantom charged black hole solutions from a neutral seed.Physical review D: Particles and fields 05/2011; 83(12).

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