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X-ORIGINAL-URL:https://www.ift.uam-csic.es
X-WR-CALDESC:Events for Instituto de Física Teórica
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DTSTART;TZID=Europe/Madrid:20260303T100000
DTEND;TZID=Europe/Madrid:20260303T110000
DTSTAMP:20260423T222623
CREATED:20260302T092721Z
LAST-MODIFIED:20260302T163549Z
UID:24543-1772532000-1772535600@www.ift.uam-csic.es
SUMMARY:Cosmology Journal Club
DESCRIPTION:Every Tuesday at 2:00 PM in the discussion room on the 5th floor. \nJoin the IFT cosmology/gravity journal club at benty-fields.com to vote for papers and volunteer to present them.
URL:https://www.ift.uam-csic.es/event/cosmology-journal-club-16/
LOCATION:Discussion room 5th floor\, C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, Madrid\, 28049\, Spain
CATEGORIES:Journal clubs,Scientific activities
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BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260303T113000
DTEND;TZID=Europe/Madrid:20260303T130000
DTSTAMP:20260423T222623
CREATED:20260220T135421Z
LAST-MODIFIED:20260224T152926Z
UID:24430-1772537400-1772542800@www.ift.uam-csic.es
SUMMARY:Holo Club: 'Brick wall Normal Modes and Emerging Thermality'
DESCRIPTION:Speaker: Suman Das (IFT) \nTitle: ‘Brick wall Normal Modes and Emerging Thermality’ \nVenue & Time: Gray Room 1 / 11:00 \nAbstract: \narXiv:2401.01417 \nThe ’t Hooft brick wall model provides one of the earliest microscopic derivations of the black-hole area law within the probe approximation of quantum field theory in curved spacetime. In this talk\, I will revisit the original construction and present a modern perspective based on the spectral properties of the probe fields. After briefly reviewing how the area-proportional entropy arises in ’t Hooft’s setup\, I will show that its origin can be understood in terms of the structure of the normal-mode spectrum. In particular\, a quasi-degenerate growth of states along a specific quantum-number direction leads directly to the area scaling of the entropy.This viewpoint not only clarifies the mechanism behind the entropy but also reveals a number of non-trivial features of the spectrum\, including signatures commonly associated with quantum chaos. I will discuss these features. Finally\, I will show that\, when the brick wall is placed parametrically close to the horizon\, the two-point function of the probe field becomes indistinguishable from a thermal correlator\, providing a precise sense in which thermality emerges in this framework.
URL:https://www.ift.uam-csic.es/event/holo-club-brick-wall-normal-modes-and-emerging-thermality/
LOCATION:Gray Room 1\, Instituto de Física Teórica\, C/ Nicolás Cabrera 13-15\, Cantoblanco\, Madrid\, Madrid\, 28049\, Spain
CATEGORIES:Journal clubs,Scientific activities
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