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DTSTAMP:20260824T163759
DTSTART;TZID=America/Detroit:20260911T150000
DTEND;TZID=America/Detroit:20260911T160000
SUMMARY:Lecture / Discussion:HET Seminar | Phasing out Dark Matter Isocurvature with Thermal Misalignment
DESCRIPTION:Thermal misalignment provides an alternative to the standard misalignment mechanism for the cosmological production of scalar dark matter. In this framework\, feeble couplings to particles in the thermal bath generate a finite-temperature potential that drives the scalar towards large field values early in the radiation era\, dynamically inducing the misalignment before the onset of scalar oscillations. As a result\, the relic abundance is controlled primarily by particle masses and couplings rather than the initial field value. As a light spectator field\, the scalar acquires inflationary fluctuations that are uncorrelated with the adiabatic curvature mode\, generically sourcing isocurvature perturbations. We show that\, unlike standard misalignment\, where light scalars are strongly constrained by cosmic microwave background bounds on dark matter isocurvature for high-scale inflation\, thermal misalignment can naturally suppress the isocurvature signal. This occurs through a novel late-time phase offset between the background zero mode and the superhorizon perturbations\, which reduces the final dark matter density contrast. Thermal misalignment therefore provides a new and generic route to isocurvature-safe scalar dark matter.
UID:149985-21907765@events.umich.edu
URL:https://events.umich.edu/event/149985
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:lecture,Seminar,Science,Physics,High Energy Theory Seminar
LOCATION:West Hall - 4404
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260911T060433
DTSTART;TZID=America/Detroit:20260911T150000
DTEND;TZID=America/Detroit:20260911T160000
SUMMARY:Presentation:ISBA Education Session 2: Build Your Recruiting Portfolio and Personal Brand
DESCRIPTION:Hi all\,\n\nJoin us for the next ISBA Education Session (#2)\, \"Build Your Recruiting Portfolio and Your Personal Brand”\, covering how to create your Plan A\, B and C\, and your personal brand.\n\nWhen: Friday\, September 11\, 2026\, 3:00 - 4:00 PM Where: Room R2220\n\nWhat we'll cover:\nPlan A / B / C - Target paths\, how to evaluate options\, and how much time goes to eachYour Personal Brand - Resume\, \"tell me about yourself\,\" and why this industry\, function and nowTranslating Your Story - One MBA experience\, and how much to tailor it across paths\n\nWhether you're deep into recruiting or just getting started\, this session will give you practical tools to organize your search and sharpen how you tell your story. See you there!
UID:151865-21912312@events.umich.edu
URL:https://events.umich.edu/event/151865
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:
LOCATION:R2220
CONTACT:
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