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# Video Library

Since 2002 Perimeter Institute has been recording seminars, conference talks, public outreach events such as talks from top scientists 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 and 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.

Accessibly by anyone with internet, Perimeter aims to share the power and wonder of science with this free library.

## Computational Physics - Lecture 12

Vendredi oct 19, 2018
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## PSI 2018/2019 - Statistical Mechanics - Lecture 7

Vendredi oct 19, 2018
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## PSI 2018/2019 - Quantum Field Theory I - Lecture 7

Vendredi oct 19, 2018
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## A Song of Ice and Fire --- Dynamics of Planets Hot and Cold

Jeudi oct 18, 2018
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The unexpected diversity of planetary systems has posed challenges to our classical understanding of planetary formation. For instance, Jupiter sized planets have been detected with short orbital periods of a few days in misaligned orbits with respect to the spin-axis of their host stars. I will first describe the statistical implication of detecting misaligned hot Jupiters and will suggest how dynamical interactions between an outer perturber and the inner planet, can naturally lead to the formation of such misaligned hot Jupiters.

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## PSI 2018/2019 - Statistical Mechanics - Lecture 6

Jeudi oct 18, 2018
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## Entanglement structure of current driven diffusive fermion systems

Jeudi oct 18, 2018

Applying a chemical potential bias to a conductor drives the system out of equilibrium into a current carrying non-equilibrium state.  This current flow is associated with entropy production in the leads, but it remains poorly understood under what conditions the system is driven to local equilibrium by this process.  We investigate this problem using two toy models for coherent quantum transport of diffusive fermions:  Anderson models in the conducting phase and a class of random quantum circuits acting on a chain of qubits, which exactly maps to an interacting fermion problem.

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## Macroscopic Effects of the Quantum Conformal Anomaly: Scalar Gravitational Waves, Black Holes, and Dark Energy

Jeudi oct 18, 2018
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In the second lecture, I will extend the previous discussion to gravity, and show that the conformal trace anomaly must play a special role in the effective field theory of low energy gravity.

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## PSI 2018/2019 - Quantum Field Theory I - Lecture 6

Jeudi oct 18, 2018
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## The role of entropy in topological quantum error correction

Mercredi oct 17, 2018
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Ubiquitous in the behavior of physical systems is the competition between an energy term E and an entropy term S of their free energy F = E - beta S. These concepts are also relevant for error correction, where the energy E is the number of qubits afflicted by an error, the `entropy' S(E) is the logarithm of the number of energy-E failing errors, and beta relates to the probability of each qubit's error. Error-correction schemes with larger minimum free energy have better performance.

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## Nuclear physics from the Standard Model

Mercredi oct 17, 2018
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I will discuss the status and future of numerical lattice Quantum Chromodynamics (QCD) calculations for nuclear physics. With advances in supercomputing, we are beginning to quantitatively understand nuclear structure and interactions directly from the fundamental quark and gluon degrees of freedom of the Standard Model. Recent studies provide insight into the neutrino-nucleus interactions relevant to long-baseline neutrino experiments, double beta decay, and nuclear sigma terms needed for theory predictions of dark matter cross-sections at underground detectors.

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## Next Public Lecture

### JOCELYN BELL BURNELL: UNIVERSITY OF OXFORD

Jeudi oct 25, 2018

## LECTURES ON-DEMAND

### Avery Broderick: Perimeter Institute and University of Waterloo

Speaker: Avery Broderick