Speaker
Stoytcho Yazadjiev
Description
In this talk, I will discuss no-hair theorems for black holes in the presence of multiple scalar fields, both in General Relativity and in scalar–tensor theories. Unlike the simpler vacuum case, the presence of additional scalar fields makes the classification of black holes much more complicated due to the richer and more involved structure of the field equations. I will illustrate the main ideas with some explicit examples and outline the key mathematical results, and I will also briefly discuss possible astrophysical implications of scalar hair when it exists.