Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-06-23
Phys. Lett. B693:129-133, 2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
Typo fixed in Equation (17); to appear in Phys. Lett. B
Scientific paper
Tensor and scalar unparticle couplings to matter have been shown to enhance gravitational interactions and provide corrections to the Schwarzschild metric and associated black hole structure. We derive an exact solution to the Einstein equations for vector unparticles, and conclusively demonstrate that these induce Riessner-Nordstr\"om (RN)-like solutions where the role of the "charge" is defined by a composite of unparticle phase space parameters. These black holes admit double-horizon structure, although unlike the RN metric these solutions have a minimum inner horizon value. In the extremal limit, the Hawking temperature is shown to vanish. As with the scalar/tensor case, the (outer) horizon is shown via entropy considerations to behave like a fractal surface of spectral dimension $d_H = 2\du$.
Mureika Jonas Roman
Spallucci Euro
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