BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Physics & Astronomy - ECPv6.16.3//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://uwm.edu/physics
X-WR-CALDESC:Events for Physics & Astronomy
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Chicago
BEGIN:DAYLIGHT
TZOFFSETFROM:-0600
TZOFFSETTO:-0500
TZNAME:CDT
DTSTART:20240310T080000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0500
TZOFFSETTO:-0600
TZNAME:CST
DTSTART:20241103T070000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0600
TZOFFSETTO:-0500
TZNAME:CDT
DTSTART:20250309T080000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0500
TZOFFSETTO:-0600
TZNAME:CST
DTSTART:20251102T070000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0600
TZOFFSETTO:-0500
TZNAME:CDT
DTSTART:20260308T080000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0500
TZOFFSETTO:-0600
TZNAME:CST
DTSTART:20261101T070000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20251212T130000
DTEND;TZID=America/Chicago:20251212T140000
DTSTAMP:20260611T212911
CREATED:20251205T203033Z
LAST-MODIFIED:20251205T203033Z
UID:10435376-1765544400-1765548000@uwm.edu
SUMMARY:CGCA Seminar - Samuel E. Gralla
DESCRIPTION:Can black holes evaporate past extremality?\nProfessor Samuel E. Gralla\nUniversity of Arizona \nBlack holes with sufficiently large initial charge and mass will Hawking-evaporate towards the extremal limit. The emission slows as the temperature approaches zero\, but still reaches the point where a single Hawking quantum would make the object superextremal\, removing the horizon. We take this semiclassical prediction at face value and ask: When the emission occurs\, what is revealed?  Using a simple thin-shell model for the matter originally forming the black hole\, we find that this matter re-emerges after the horizon is removed and subsequently expands back to large radius.  This expanding remnant has been bathed in the ingoing Hawking quanta during evaporation and presumably carries correlations with the outgoing quanta\, offering the attractive possibility of studying information paradox issues in a setup where spacetime curvatures are globally small\, so that quantum gravity is not required. Even for ordinary black holes that evaporate down to the Planck size\, we propose a radical new scenario for the interior: rather than forming a singularity\, the collapsing matter settles onto an outgoing null trajectory inside the horizon for the entirety of evaporation.
URL:https://uwm.edu/physics/event/cgca-seminar-samuel-e-gralla/
LOCATION:Kenwood IRC 2175\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:CGCA Seminars
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20251212T153000
DTEND;TZID=America/Chicago:20251212T170000
DTSTAMP:20260611T212911
CREATED:20251002T142428Z
LAST-MODIFIED:20251208T222245Z
UID:10435374-1765553400-1765558800@uwm.edu
SUMMARY:Physics Colloquium - Moritz Münchmeyer
DESCRIPTION:AI Reasoning in Theoretical Physics with the TPBench Project\nAssistant Professor Moritz Münchmeyer\nUW-Madison Department of Physics \nLarge-language models are becoming powerful enough to assist physicists with mathematical reasoning at the research level. In this talk\, I will first present our dataset TPBench (tpbench.org)\, which was constructed to benchmark and improve AI models specifically for theoretical physics. I will then discuss how test-time scaling and symbolic verification can be used to improve their performance and reliability. \nI will also show preliminary results from two new projects. In the first\, we apply reinforcement learning to fine-tune models on QFT problems. In the second\, we apply LLM-based code evolution (similar to Google’s AlphaEvolve) to algorithmic problems in cosmology.
URL:https://uwm.edu/physics/event/physics-colloquium-moritz-munchmeyer/
LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
END:VEVENT
END:VCALENDAR