Maths HEP Lunchtime Seminars: Effective theories for bubbles, branes and black holes
27 May 2016 13:00 in CM221
Black holes in certain regimes of parameter space are described by long-wavelength effective theories. The resulting dynamics, after integrating out the short-wavelength degrees of freedom, is usually of hydrodynamic and/or elastic character while the resulting theories are relativistic generalisations of theories of fluid mechanics, soap bubbles, fluid droplets or of elasticity of biophysical membranes. I will review the several different contexts in which these effective theories can be useful, either in pure gravity, string theory or in the AdS/CFT correspondence and discuss the several different types of (in some cases novel) theories of hydrodynamics that have been developed from gravity. In particular, using these theories, I will highlight recent developments in the classification of horizon geometries, in the perturbative construction of non-trivial black holes solutions in pure gravity and the role of minimal surface theory. Furthermore, I will discuss several methods for obtaining the most general hydrodynamic equations in supergravity and M-theory that govern any bound state.