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X-WR-CALNAME:Observing the Big Bang
X-ORIGINAL-URL:https://cosmology.nl
X-WR-CALDESC:Events for Observing the Big Bang
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TZID:Europe/Amsterdam
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DTSTART:20190331T010000
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DTSTART:20191027T010000
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DTSTART;TZID=Europe/Amsterdam:20190301T120000
DTEND;TZID=Europe/Amsterdam:20190301T170000
DTSTAMP:20260616T044615
CREATED:20181019T125347Z
LAST-MODIFIED:20190226T101201Z
UID:387-1551441600-1551459600@cosmology.nl
SUMMARY:Utrecht Winter 2019
DESCRIPTION:Utrecht\, March 1st 2019 \nThe second THC meeting of the solar year will take place in Utrecht. The venue is located at  Buys Ballot Building\, Princetonplein 5\, Utrecht\, seminar room 7.12. \nProgram \n13:00 – 14:00: Coffee/Tea \n14:00 – 15:00: Talk by Kyohei Mukaida (DESY) \nTitle: Primordial black holes from inflation and their implications \nAbstract: \nPrimordial black holes (PBHs) are one of the candidates to constitute the whole dark matter.Recently\, they have been gathering additional attention because they can explain the observed gravitational waves (GWs) detected by LIGO. In this talk\, I assume that PBHs are generated from inflation\, and discuss observational probes specific to PBHs from inflation. After that\, I also discuss classes of inflation models that could be an origin of PBHs for all DM or LIGO GWs while evading the current constraints. \n15:00 – 15:30: Coffee Break \n15:30 – 16:30: Talk by John Stout (UvA) \nTitle: Instantons away from equilibrium \nAbstract: \nNon-perturbatively generated effective potentials play an extremely useful\, often critical\, role in string and inflationary model building. These potentials are typically computed by Euclidean methods (i.e. instantons) which assume the system is in equilibrium. For systems out of equilibrium—for instance\, an inflaton rolling down its potential— we expect there are corrections to the semi-classical evolution due to transient phenomena. How do we determine these corrections\, and when do they become large? I will introduce a picture of non-perturbative effects that does not rely on the Euclidean path integral and answer these questions for a wide class of toy quantum mechanical models. \n16:30: Snacks/drinks in ITP coffee room\, 7th floor\, Buys Ballot Building\, Princetonplein 5\, Utrecht
URL:https://cosmology.nl/event/utrecht-winter-2019/
LOCATION:Institute for Theoretical Physics Utrecht\,  Princetonplein 5\, Utrecht\, 3584 CE\, Netherlands
CATEGORIES:THC meeting
ORGANIZER;CN="Tomislav%20Prokopec":MAILTO:t.prokopec@uu.nl
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