Since 2002 Perimeter Institute has been recording seminars, conference talks, and public outreach events using video cameras installed in our lecture theatres. Perimeter now has 7 formal presentation spaces for its many scientific conferences, seminars, workshops and educational outreach activities, all with advanced audio-visual technical capabilities. Recordings of events in these areas are all available On-Demand from this Video Library and on Perimeter Institute Recorded Seminar Archive (PIRSA).
PIRSA is a permanent, free, searchable, and citable archive of recorded seminars from relevant bodies in physics. This resource has been partially modelled after Cornell University's arXiv.org.
We reconstruct the experience of an infalling observer
using the AdS/CFT correspondence.
We write operators both outside and inside the black hole
in terms of CFT operators.
Our construction provides a natural realization of black
hole complementarity, and a way of preserving information without the need for
Based on her book, The Calculus Diaries, join, Jennifer Ouellette as she shows how calculus can be applied to everything from gas mileage, diet, the rides at Disneyland, surfing in Hawaii, shooting craps in Vegas and warding off zombies. Even the mathematically challenged, can-and-should learn the fundamentals of the universal language.
The Wigner-Araki-Yanase (WAY) theorem delineates
circumstances under which a class of quantum measurements is ruled out.
Specifically, it states that any observable (given as a self adjoint operator)
not commuting with an additive conserved quantity of a quantum system and
measuring apparatus combined admits no repeatable measurements. I'll review the
content of this theorem and present some new work which generalises and
strengthens the existing results.
Utilizing a variety and also
constraints offered by quantum and solid
state chemistry, we discuss
possibilities of unconventional quantum
magnetism and superconductivity
in doped 3 dimensional Mott insulators.
Some of the possibilities are
quantum spin liquid states having pseudo
fermi surface coexisting with
long range magnetic order, 3 dimensional
emergent gauge fields and
unconventional superconducting order parameter
It has been known for twenty years that a class of
two-dimensional gauge theories are intimately connected to toric geometry, as
well as to hypersurfaces or complete intersections in a toric varieties, and to
generalizations thereof. Under renormalization
group flow, the two-dimensional gauge theory flows to a conformal field theory
that describes string propagation on the associated geometry. This provides a connection between certain
quantities in the gauge theory and topological invariants of the associated
In this talk, I will start with
briefly introducing some universal physics behind quantum hall and topological
insulator , which inspired a BSM flavor model. It intimately relates
deconstructed little Higgs to flavor structure: fermion masses, CKM etc.
This new cousin of little Higgs, we call it little flavor, shares a 10-20
Tev cut-off scale with little Higgs, so as to explain flavor structure at
surprisingly low scale without rising FCNC problem.
The non-Gaussian statistics of
the primordial density perturbation have become a key test of the inflationary
scenario of the very early universe. Currently many techniques are used to
calculate the non-Gaussian signatures of a given model of inflation. In
particular, simple super-horizon techniques such as the deltaN formalism are
often used for models with more than one field, while more technical field
theory techniques, referred to as the In-In formalism, are typically used for
A recent development in
information theory is the generalisation of quantum Shannon information theory
to the operationally motivated smooth entropy information theory, which
originates in quantum cryptography research. In a series of papers the first
steps have been taken towards creating a statistical mechanics based on smooth
entropy information theory. This approach turns out to allow us to answer
questions one might not have thought were possible in statistical mechanics,