Multi-field open ination and instanton

Kazuyuki Sugimura, Daisuke Yamauchi, Misao Sasaki

Research output: Contribution to conferencePaper

Abstract

In the open ination scenario, phase transition from false vacuum ination at a local minimum to slow-roll ination is mediated by the quantum tunneling. In this work, we present a concrete multi-field open ination model, explicitly showing how the bubble is nucleated by tunneling of scalar fields, and how slow-roll ination in the nucleated bubble follows. This model is the first viable open ination model with a simple potential. Multi-field tunneling is described by multi-field instanton method, which is an natural extension to the Coleman-De Luccia(CDL) instanton method. Evolution of the universe in the bubble obeys equations of motion for the open Friedmann- Lemaître-Robertson- Walker(FLRW) universe.

Original languageEnglish
Pages172-175
Number of pages4
Publication statusPublished - 2011 Jan 1
Event21st Workshop on General Relativity and Gravitation in Japan, JGRG 2011 - Sendai, Japan
Duration: 2011 Sep 262011 Sep 29

Other

Other21st Workshop on General Relativity and Gravitation in Japan, JGRG 2011
CountryJapan
CitySendai
Period11/9/2611/9/29

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Sugimura, K., Yamauchi, D., & Sasaki, M. (2011). Multi-field open ination and instanton. 172-175. Paper presented at 21st Workshop on General Relativity and Gravitation in Japan, JGRG 2011, Sendai, Japan.