Vincent R Frignanni 
Classical and Quantum Gravity [PDF ebook] 
Theory, Analysis and Applications

Classical and quantum gravity covers all aspects of gravitational physics and the theory of spacetime. This new book presents topical research in the study of classical and quantum gravity, including the weak field limit of fourth order gravity; the problem of time in quantum gravity; quantum correction and entropy spectrum in different gravity; quantum instability for charged particles on charged Nariai Black Holes and the equivalence of the generalized tetra formalism with the theory of general relativity.