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Intrinsic Time Quantum Gravity and the Unique Initial State of the Universe

Source Date of Publication:Oct 27,2017
10/27 2017
  • Title Intrinsic Time Quantum Gravity and the Unique Initial State of the Universe
  • Speaker
  • Date
  • Venue
  • Abstract

    CAS Key Laboratory of Theoretical Physics

    Institute of Theoretical Physics

     Chinese Academy of Sciences

    Seminar

    Title

    题目

    Intrinsic Time Quantum Gravity and the Unique Initial State of the Universe

    Speaker

    报告人

    Hoi-Lai Yu

    Affiliation

    所在单位

    台湾中央研究院物理研究所

    Date

    日期

    10:00 Oct 27,2017

    Venue

    地点

    Room 6420, ITP NEW BUILDING

    Abstract

    摘要

    The precise matching between theory of the expanding Universe and the CMB/Planck data are usually believed a great triumph of the ΛCDM model and General Relativity(GR). The homogenous and isotropic sliced ΛCDM model with inflation is quantitatively backed up by GR, which, however, is attractive(to lump things together) and covariant. These are fundamentally conflicting properties. In line with the fact that the Universe is expanding and future is yet to come. As paradoxical as it may seem: only to quest for paradigm shift in both GR and inflationary models may resolve these obvious intrinsic contradictions. Of course, suspicious may seem if inflation also need a paradigm shift; a dynamic of spatial evolution w.r.t to intrinsic time driven by the Cotton-York tensor automatically replaces inflationary paradigm. A successful solution to the initial condition of the Universe will naturally deliver an inflationary epoch, i.e. de Sitter spacetime expansion of the Universe in the early epoch. In this talk, we shall elaborate how trivial one can sew together both paradigm shift in GR and inflation by just identifying the correct symmetries in GR.

    Contact person

    所内联系人

    Rong-Gen Cai, Zong-Kuan Guo