**Tolga Birkandan** *ITU, Department of Physics, İstanbul*

13 November 2014, Thursday, 14:40

Cavid Erginsoy Seminar Room, Physics Department, 3rd floor

**Abstract:**
Macroscopic classical theory of black holes regards only the event
horizon. However, the microscopic treatment of black holes shows that
all horizons contribute in calculations. Therefore, the calculations
of scattering and gauge/gravity duality should involve probing the
vicinity of all horizons. Derivation of the Klein-Gordon equation,
studying its separability and probing the residua associated with the
horizons are the key issues that constitutes the core of the
calculations for the black hole internal structure. One ﬁnds the
physical properties, namely surface gravities and angular velocities
associated with the horizons by probing the radial part of the
Klein-Gordon equation. As the surface gravity carry the information of
the Hawking temperature on the horizon, we see the thermodynamics
explicitly in the wave equation for each horizon.

I will start with an introduction on black holes and their thermodynamics. Then, I will focus on two rotating solutions of 5D gauged supergravity. The first one is the solution of Chong et al. (Phys.Rev.Lett.95:161301,2005) having three equal charges and the second one is Wu's most general solution of maximally supersymmetric gauged supergravity in 5D (Phys.Lett. B707: 286, 2012).

**Reminder:** Tea and cookies will be in the seminar room before the seminar.

(Printable View of http://www.physics.metu.edu.tr/Seminars/SEM14082)