Black holes are
predicted in general relativity as exact solutions of the Einstein field
equations. In physical terms, a black hole means a region in the universe
where gravity is so strong that nothing can escape. Thus, gravity
introduces a new type of randomness or chaos into physics through the loss
of information in black holes. The area of a black hole acts as an entropy
to measure the loss of information. I will describe black holes as
thermodynamical objects with a temperature and entropy. Using the noval
arguments in string theory, I will also discuss the microstates of a black
hole that are responsible for its entropy and theromodynamical properties.
