Coupling Functions and Quantum Corrections in Gauss-Bonnet Gravityстатья

Дата последнего поиска статьи во внешних источниках: 20 апреля 2016 г.

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[1] Coupling functions and quantum corrections in gauss-bonnet gravity / S. O. Alexeyev, D. A. Tretyakova, D. Melkoserov et al. // Horizons in World Physics. — Vol. 286 of Horizons in World Physics. — Nova Science Publishers, Inc New York, United States, 2015. — P. 171–183. We demonstrate how the changing of dilatonic coupling function changing in black-hole like solutions could provide some information about the model parameters. We work in the frames of the gravity model from Einstein-dilaton-Gauss-Bonnet (EDGB) string inspired theory. Our numerical results indicate that external structure of the new solution is also similar to the Schwarzschild one. On the other hand, new solution has different dependence of a horizon radius upon the black hole mass. We use the general form of a power-law correction to the Schwarzschild solution and analyze it's impact on the event horizon and circular orbits for different parameter values. Such a correction does not contradict with existing observational data. On the other hand, an exact definition of model parameters requires precise measurements to distinguish between different possible cases. Having these values we suppose that the direct imaging of the event horizon area can shed light on the correction viability. In addition our results may be directly applied to future black hole observations. [ DOI ]

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