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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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ITP-CAS Gravity and Cosmology Seminar 3
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Title
题目
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The Secret Higgstory: Cosmological Signals of the Standard Model |
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Speaker
报告人
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Affiliation
所在单位
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Kavli Institute of Physics and Mathematics of the Universe |
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Date
日期
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Mar 23, 2021 02:00 PM Beijing |
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Venue
地点
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https://zoom.com.cn/j/98396632459?pwd=eGxVQVo0SVY0NHdPR1lUNnNqcGp6UT09
Meeting ID: 983 9663 2459
Passcode: 999036 |
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Contact Person
所内联系人
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皮石 |
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Abstract
摘要
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The history of the Higgs during inflation is the closest point of contact between particle physics and cosmology. This history leads to cosmological signals which dramatically show the union of the Standard Model and Lambda-CDM. Depending on the energy scale of inflation and how quickly the inflaton decays at reheating, the Higgs plays different roles: it can act as a curvaton; it can modulate the decay of the inflaton; and its own decay can change the thermal history of the universe. I will present new insights on these signals. First I will focus on whether Higgs fluctuations can form primordial black hole dark matter when it explores its large-field instability. Then I will show how in our familiar electroweak vacuum the HIggs can set the maximum temperature our universe ever achieved, with important cosmological consequences.
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