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X-WR-CALNAME;VALUE=TEXT:Department of Physics
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TZID:America/New_York
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DTSTART:20211107T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
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DTSTART:20220313T020000
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BEGIN:VEVENT
UID:calendar.13996.field_events_date.0@phy.princeton.edu
DTSTAMP:20211130T054649Z
CREATED:20211123T203159Z
DESCRIPTION:Connecting theoretical models for exotic quantum states to real
materials is a key goal in quantum materials synthesis. Two-dimensional
model systems have been proposed to host a wide variety of exotic phases-
historically a number of techniques have been used to realize these includ
ing thin film growth and mechanical exfoliation. We describe here our rec
ent progress in experimentally realizing 2D model systems using bulk cryst
al synthesis including superconducting and topological states. We discus
s their structures and the new phenomena that they support. We comment on
the perspective for realizing further 2D model systems in complex materia
l structures and their connections to other methods for realizing 2D syste
ms.\n\nJoin via Zoom:\n\nhttps://princeton.zoom.us/j/94500018897
DTSTART;TZID=America/New_York:20211130T123000
DTEND;TZID=America/New_York:20211130T123000
LAST-MODIFIED:20211123T205229Z
LOCATION:Joseph Henry Room
SUMMARY:Natural Superlattice Design of Quantum Materials
URL;TYPE=URI:https://phy.princeton.edu/events/natural-superlattice-design-q
uantum-materials
END:VEVENT
BEGIN:VEVENT
UID:calendar.13866.field_events_date.0@phy.princeton.edu
DTSTAMP:20211130T054649Z
CREATED:20211028T195200Z
DESCRIPTION:I am going to argue that the non-vanishing gravitational anomal
y in 2D CFT obstructs the existence of the well-defined notion of entangle
ment. As a corollary\, we will also see that the non-vanishing gravitation
al anomaly implies the non-existence of the lattice regulator generalising
the Nielsen-Ninomiya theorem. I will also generalise this to higher dimen
sions and cases with global symmetries.\n\nI will also take time to discus
s the modified Villain construction of compact free boson with on-site U(1
)_m \times U(1)_w symmetries (which has a mixed anomaly)\, proposed by Gor
antla\, Lam\, Seiberg and Shao. I will argue that this construction seemin
gly contradicts the global symmetry version of our theorem\, but it doesn'
t.\n\nFinally\, I will conclude the talk with possible future directions\,
in particular the implication it might have for the island conjecture. Th
e talk is based on my recent paper with Simeon Hellerman and Domenico Orla
ndo [2101.03320].\n\n \n\nhttps://princeton.zoom.us/j/97195348538?pwd=bEhj
czRmbnNIZjNydFpYQXN0bXZWQT09
DTSTART;TZID=America/New_York:20211130T134500
DTEND;TZID=America/New_York:20211130T134500
LAST-MODIFIED:20211129T153951Z
LOCATION:Zoom
SUMMARY:HET Seminar | Masataka Watanabe | 'Quantum Information Theory of th
e Gravitational Anomaly' | Location: Zoom
URL;TYPE=URI:https://phy.princeton.edu/events/het-seminar-masataka-watanabe
-Quantum%20Information%20Theory%20of%20the%20Gravitational%20Anomaly-locat
ion-zoom
END:VEVENT
BEGIN:VEVENT
UID:calendar.13961.field_events_date.0@phy.princeton.edu
DTSTAMP:20211130T054649Z
CATEGORIES:High Energy Experiment Seminar
CREATED:20211118T141800Z
DESCRIPTION:To date\, LHC searches have provided no definitive evidence for
physics beyond the Standard Model (BSM). What if we’re looking in the wro
ng place? Long-lived particles (LLPs) arise from a variety of well-motivat
ed BSM theories. However\, they remain weakly constrained at the LHC: most
reconstruction algorithms target prompt decays of particles rather than t
he displaced decays of LLPs. LLP searches are generally signature-driven\,
both because several different models can often predict the same signatur
e and because the unconventional nature of LLP signatures requires extensi
ve knowledge of the detector and dedicated reconstruction algorithms. In t
his seminar\, I will discuss the first ever ATLAS search for a displaced a
nd delayed diphoton resonance and the intricate detector-level expertise n
ecessary to isolate this challenging and striking signature. I will focus
on the development and performance of our specialized analysis tools\, inc
luding a novel method of photon vertexing\, which exploits detailed low-le
vel calorimeter information. Our unique approach to event reconstruction h
as greatly enhanced the sensitivity of the analysis and contributed to som
e of the first exclusions for long-lived higgsinos.
DTSTART;TZID=America/New_York:20211130T153000
DTEND;TZID=America/New_York:20211130T153000
LAST-MODIFIED:20211119T132424Z
LOCATION:Princeton Gravity Initiative- Classroom 481
SUMMARY:HEP-Dicke Candidate-Kiley Kennedy-Columbia-'Spotlight on Supersymme
try at the LHC: The First ATLAS Search for Displaced and Delayed Diphoton
Resonances'
URL;TYPE=URI:https://phy.princeton.edu/events/hep-dicke-candidate-kiley-ken
nedy-columbia-spotlight-supersymmetry-lhc-first-atlas-search
END:VEVENT
BEGIN:VEVENT
UID:calendar.13981.field_events_date.0@phy.princeton.edu
DTSTAMP:20211130T054649Z
CATEGORIES:Mathematical Physics Seminar
CREATED:20211122T181900Z
DESCRIPTION:In this talk I will give an overview of recent progress regardi
ng mathematical questions and proofs of the spectral properties of Haldane
pseudo-potentials. These are short range interactions projected onto the
lowest Landau level and are tailored to model properties of fractional Hal
l fluids and their excitations as well as rotating Bose gases. I will sket
ch a strategy which establishes the spectral gap in a truncated system whi
ch describes a thin-cylinder limit. (Based on joint works with B. Nachter
gaele and A. Young)
DTSTART;TZID=America/New_York:20211130T163000
DTEND;TZID=America/New_York:20211130T163000
LAST-MODIFIED:20211122T182214Z
LOCATION:Jadwin A-06
SUMMARY:Mathematical Physics Seminar\, Tues\, Nov 30\, 4:30 pm\, Jadwin A-0
6\, Simone Warzel\, TU-Munich\, “The Spectral Gap in Fractional Hall Syste
ms”
URL;TYPE=URI:https://phy.princeton.edu/events/mathematical-physics-seminar-
tues-nov-30-430-pm-jadwin-06-simone-warzel-tu-munich-spectral
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