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CAS Key Laboratory of Theoretical Physics |
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Institute of Theoretical Physics |
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Chinese Academy of Sciences |
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Seminar |
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Title
题目 |
Macroscopic dark matter: six flavor quark matter |
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Speaker
报告人 |
Prof. Yang Bai |
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Affiliation
所在单位 |
University of Wisconsin, Madison |
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Date
日期 |
2018年6月14日（星期四）下午 15:30 PM |
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Venue
地点 |
Conference Room 6620, ITP new Building |
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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. |
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Contact person
所内联系人 |
李田军 |
