Dear quanta,
The next few days (starting tomorrow) will be a workshop on the
'informational lens' with a focus tomorrow on quantum, including a
talk by me that will probably be already familiar material for most of
you.
https://sites.google.com/view/informational-lens-workshop-1/home?authuser=0
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At 2pm tomorrow there is a nuclear/particle theory seminar on the
black hole information problem.
“The Black Hole Information Paradox: A Resolution on the Horizon?”
Abstract: The black hole information paradox — whether information
escapes an evaporating black hole or not — remains one of the
greatest unsolved mysteries of theoretical physics. The apparent
conflict between validity of semiclassical gravity at low curvatures
and unitarity of quantum mechanics has long been expected to find its
resolution in the deep quantum gravity regime. Recent developments in
the holographic dictionary and in particular its application to
entanglement, however, have shown that a semiclassical analysis of
gravitational physics has a hallmark feature of unitary evolution. I
will describe this recent progress and discuss some potential new
avenues for working towards a resolution of the information paradox.
https://mit.zoom.us/j/92926107078?pwd=MUdQeHNFVUhJbDhneEREWm9KQ2FPdz09
Meeting ID: 929 2610 7078
Password: MIT-CTP-NP
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Thursday at 4pm is the Physics Colloquium
Speaker: Frank Wilczek, MIT
Title: “Quanta of the Third Kind: Anyons”
Abstract: According to traditional understanding, quantum particles
are either bosons or fermions. This so-called “quantum statistics” has
important consequences for their behavior. In the late 70-ies the
mathematics of topology was employed to get a deep understanding of
quantum statistics, and lead to the realization that in two spatial
dimensions there are alternatives beyond bosons and fermions. The new
possible particles go under the general name “anyons”, coined in 1982.
In 1984 it was demonstrated, theoretically, that quasiparticles in the
states of matter known as fractional quantum Hall liquids (FQHL) are
fractionally charged anyons. Since then, theoretical and numerical
work on states of two-dimensional matter has predicted many types of
anyons, and in particular “nonabelian” anyons that could be a powerful
resource for quantum computers. Until very recently, experiments on
anyons lagged far behind the thriving theoretical and numerical work,
but this spring, two independent innovative experiments convincingly
observed anyon behavior in the simplest FQHL. The age of experimental
anyonics is upon us.
LINK:
https://mit.zoom.us/j/93759934137?pwd=cFRuTTRGS1Y1eWxIQUNYblZlbVlVdz09
Password: phys82020
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And finally, this Friday we will have Yichen speak in our group
meeting about his work on convergence to the thermodynamic limit.
aram
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