Thermodynamic Gravity And The Emergence of Space With Geometry

Thermodynamic aspects of black holes and Rindler horizons are reviewed along with quantum field theory in the corresponding curved spacetimes. The implication that gravity might be thermodynamic in origin is considered. Macroscopic space is seen to emerge at a course-grained limit via the application of holography in the context of horizons. Both Newtonian and Einsteinian gravity are seen (seperately) to be implied by an entropy maximisation principle and the suggestion that gravity is not fundamental is discussed and criticised. The fact that the thermodynamic perspective applies to Lanczos-Lovelock models, a more general (arbitrary dimensions) class of theories than Einstein’s D = 4 gravity, is also explained. Submitted in partial fulfilment of the requirements for the degree of Master of Science of Imperial College London