| Time：1120222 (Wed.) 14:20~16:20 Speaker：Prof.余海禮(Hoi-Lai Yu) 中央研究院物理研究所/Institute of Physics, Academia Sinica Title：Intrinsic Time Geometrodynamics: At One With T he Universe Abstract： Quantum Gravity needs only c-number time and correct Initial Data plus a dimension 3 Cotton-York tensor with a dimensionless coupling constant, g, which is special to 3d to become successful & renormalizable. The following topics will be covered: 1) 4-covariance and time are mutually exclusive 2) Quantum space-time doesn’t exist, only quantum evolution of space w.r.t intrinsic time 3) Theories of Gravitation needs only 3d Diffeomorphism invariance & scheme to generate initial data that solves all constraints; QM ⊕ Relativity is not QF T but QG 4) Two types of gauge structures exist: a)Fibre bundle type; infinite tensor product of the gauge group at each point b)Diffeomorphism group which does not exhibit fibre bundle structure The fundamental physics is transversality at work 5) Intrinsic Time Geometrodynamics explains time dilation & length contraction effects dynamically observed in Special Relativity 6) Quantum Gravity with Cotton-York tensor is renormalizable & Time is too robust to fluctuate 7) The square-root-form Hamiltonian may look peculiar, it produces the correct physics & being well defined 8) Universe born via Chern-Simon instanton tunneling with scale invariant primordial Gravitation Wave spectrum Place：S101, Gongguan Campus, NTNU |
