Ken-ji Hamada is a faculty member of the Theory Center at the High Energy Accelerator Research Organization (KEK). He received his PhD in physics from Hiroshima University in 1989. He has worked on string theory, conformal field theory, and quantum gravity in two dimensions, and then proposed and developed a novel approach to renormalizable quantum gravity based on conformal field theory. Further, he recently has focused on the applications of his quantum gravity theory to trans-Planckian physics.
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Trans-Planckian Physics and Inflation
Ken-ji Hamada
Preface.- What quantum gravity should reveal.- Renormalizable quantum gravity.- Conformal invariance as background freedom.- Physical meaning of Hamiltonian constraint.- Renormalization by dimensional regularization.- BRST conformal algebra and physical states.- Quantum gravity inflation.- Localized massive excitation of quantum gravity.- What the cosmological constant problem is.- Amplitude reduction of fluctuations and primordial spectra.- Topology and quantum gravity.- Simplicial quantum gravity.
