Cosmophysics Seminar (Dr. Hiroki Matsui)

Abstract

The Hartle-Hawking no-boundary proposal describes quantum creation of the universe from “nothing” with geometry of zero size. We will demonstrate the incompatibility of the no-boundary proposal and the Swampland conjectures such as (refined) dS conjecture and distance conjecture. When we take the (refined) dS conjecture seriously, even the classical universe (more precisely, the saddle-point solution) is not guaranteed. Even if we somehow relax the conjectures to be consistent with the inflationary paradigm, the probability of the classical inflationary universe is negligibly small and not consistent with our observations.

• Conference
  Conference/Workshop23 Workshops hosted by KEK0
• Colloquium
  KEK Colloquium2 Theory Colloquium0 IMSS Colloquium0
• Seminar
  IPNS Seminar3 Physics Seminar9 Theory Seminar52 Detector Seminar0 IMSS Seminar2 ACC Seminar22 ACC-Physics Seminar0 PF Seminar0 放射光セミナー0 Open-Itセミナー0 技術セミナー0 低温工学センターセミナー0 測定器開発室セミナー3 Cosmophysics Seminar9 J-PARC素粒子原子核セミナー0 Joint Seminar2 CRC Seminar0
• 談話会・交流会
  物構研談話会1 技術交流会0 講義0 公聴会0 講習会0