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.
Tensor network algorithms are a powerful technique for the study of quantum systems in condensed matter physics. In this short series of lectures, I will present an applied perspective on tensor network algorithms.
Cosmic inflation has given us a remarkably successful cosmological phenomenology. But the original goal of explaining why the cosmos is *likely* to take the form we observe has proven very difficult to realize. I review the status of "eternal inflation" with an eye on the roles various infinities have (both helpful and unhelpful) in our current understanding. I then discuss attempts to construct an alternative cosmological framework that is truly finite, using ideas about equilibrium and dark energy. I report some recent results that point to observable signatures.
Tensor network algorithms are a powerful technique for the study of quantum systems in condensed matter physics. In this short series of lectures, I will present an applied perspective on tensor network algorithms.
The Polchinski equations for the Wilsonian renormalization group in the $D$--dimensional matrix scalar field theory can be written at large $N$ in a Hamiltonian form. The Hamiltonian defines evolution along one extra holographic dimension (energy scale) and can be found exactly for the subsector of $Tr\phi^n$ (for all $n$) operators. We show that at low energies independently of the dimensionality $D$ the Hamiltonian system in question reduces to the {\it integrable} effective theory.
Tensor network algorithms are a powerful technique for the study of quantum systems in condensed matter physics. In this short series of lectures, I will present an applied perspective on tensor network algorithms.
How hopeful can we be about new technologies paving a path away from our
current reliance on oil-based energy? Energy experts investigate the
alternatives in a moderated discussion presented live on TVO’s The Agenda with Steve Paikin. Speakers include: Barry Brook, Walt Patterson, Tom Rand, Zoë Caron, and Jatin Nathwani
As the world’s population inches toward the 8 billion mark, energy
experts look at how supply and demand of energy will affect global
economics and politics in a moderated discussion on TVO’s The Agenda with Steve Paikin. Speakers include: Jason Blackstock, Jian hua Ding, Velma McColl, Vagish Sharma, and Jose Maria Valenzuela
Born from a unique, international energy summit of scientists,
engineers, entrepreneurs and future leaders from around the world, the
Equinox Communiqué offers visionary proposals for transformative action
on reducing the electricity-related emissions that drive climate change.
Through a series of mini presentations, Summit participants discuss
the Equinox Summit: Energy 2030 and explain the six main recommendations
outlined in the Equinox Communiqué. These speakers lay the groundwork