Video Library

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.

PSI 2016/2017 String Theory (Review) - Lecture 12

Thursday Mar 09, 2017
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Fighting noise with topology

Wednesday Mar 08, 2017
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As we get closer to build a quantum computer, the main remaining challenge is handling the noise that aflicts quantum systems.

Topological methods, in their various forms, have become the main contestants in the quest for succesfully overcoming noise. A good deal of their strength and versatility is due to their rather unique physical flavour, which keeps giving rise to surprising developments.

The astrophysics we can do with LIGO - exploring the apparent black hole mass gap and hunting for electromagnetic counterparts

Wednesday Mar 08, 2017
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In 2015 the LIGO detectors observed gravitational waves from two distinct stellar-mass binary black hole mergers. This long awaited feat now opens avenues to explore astrophysical questions which cannot, or are difficult to, be answered purely by electromagnetic means. Massive stars which end their lives in a pair-instability supernova are not thought to leave a remnant behind, meaning there should exist a gap in the black hole mass spectrum. In this talk I will discuss whether LIGO observations can tell us something about this apparent mass gap.

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PSI 2016/2017 Introduction to Quantum Integrable Systems - Lecture 12

Wednesday Mar 08, 2017
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2016/2017 Statistical Mechanics 2 - Roger Melko - Lecture 19

Wednesday Mar 08, 2017
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PSI 2016/2017 String Theory (Review) - Lecture 11

Wednesday Mar 08, 2017
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Research plan of Yin-Chen He

Tuesday Mar 07, 2017
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In this talk, I will talk about my current study and the future directions that I am interested to explore, which include: (1) topological phases in cold atom, (2) spin liquid phases in frustrated magnets, (3) strongly interacting conformal field theory, (4) no equilibrium dynamics.  Specifically, I will elaborate on several topics that I plan to work on in the near future: (1) cold atom realization and detection of symmetry protected topological phases,

(2) effect of charge fluctuation in the spin liquid phases, (3) entanglement properties of 3D CFT.

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The Quantum Measure -- And How To Measure It

Tuesday Mar 07, 2017
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When utilized appropriately, the path-integral offers an alternative to the ordinary quantum formalism of state-vectors, selfadjoint operators, and external observers -- an alternative that seems closer to the underlying reality and more in tune with quantum gravity. The basic dynamical relationships are then expressed, not by a propagator, but by the quantum measure, a set-function $\mu$ that assigns to every (suitably regular) set $E$ of histories its generalized measure $\mu(E)$.

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Towards a "hydrodynamic" approach to density matrices in quantum chaotic systems

Tuesday Mar 07, 2017
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We study the eigenstate thermalization hypothesis in chaotic conformal ﬁeld theories (CFTs) of arbitrary dimensions by computing the reduced density matrices of small size in energy eigenstates. We show that in the inﬁnite volume limit this operator is well-approximated by a “universal” density matrix which is its projection to the primary operators that have nonzero thermal one-point functions. These operators in all two-dimensional CFTs and holographic higher-dimensional CFTs are the polynomials of stress tensor.

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Relaxion from particle production

Tuesday Mar 07, 2017

Recently a new solution to the hierarchy problem was proposed which makes use of the cosmological evolution of a light scalar field, a scanner, instead of symmetry or anthropic arguments to select a small Higgs mass. In the original proposal this scanner field could be the QCD axion and thus such class of solution became known as relaxion’’.

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Next Public Lecture

EUGENIA CHENG: HOW TO BAKE PI

Wednesday Apr 05, 2017

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