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(Seminar) Electroweak relaxation of cosmological hierarchy
2019-01-07  【 】【打印】【关闭

CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

Chinese Academy of Sciences

Seminar

Title

题目

Electroweak relaxation of cosmological hierarchy

Speaker

报告人

王少江

Affiliation

所在单位

Tufts University

Date

日期

2019年1月7日上午10:00

Venue

地点

Room 6420, ITP NEW BUILDING

Abstract

摘要

A simple model for the late-time cosmic acceleration problem is presented in the Starobinsky inflation with a negative bare cosmological constant as well as a non-minimal coupling to Higgs boson. After electroweak symmetry breaking, the Starobinsky inflaton is frozen until very recently becoming a thawing quintessence, and a comparable magnitude to the observed dark energy density can be achieved without fine-tuning. Our proposal essentially reduces the cosmological constant problem into the electroweak hierarchy problem, and its late-time behaviour is also consistent with the recently proposed swampland criteria.

Contact Person

所内联系人

蔡荣根
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