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(Seminar) Macroscopic dark matter: six flavor quark matter
2018-06-14  【 】【打印】【关闭

CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

 Chinese Academy of Sciences

Seminar

Title

题目

Macroscopic dark matter: six flavor quark matter

Speaker

报告人

Prof. Yang Bai

Affiliation

所在单位

University of Wisconsin, Madison

Date

日期

2018年6月14日(星期四)下午 15:30 PM

Venue

地点

Conference Room 6620, ITP new Building

Abstract

摘要

Macroscopic nuggets of quark matter were proposed several decades  ago as a candidate for dark matter. The formation of these objects  in the early universe requires the QCD phase transition to be first  order, which is not satisfied in the Standard Model. In this talk  I will point out that new physics may supercool the electroweak  phase transition to below the QCD scale, and the QCD phase  transition with six massless quarks becomes first-order.  As a result, the quark nuggets composed of six-flavor quark matter  may survive as a viable dark matter candidate. I will also discuss  various potential signatures including gravitational wave background,  gravitational lensing, and transient photon emission from collisions  with compact stars and other nuggets.

Contact person

所内联系人

李田军

 

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