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.
Meta-theory proposition for the evolution of fundamental laws;
Contingency of fundamental laws;
Constancy has been thought to exist in situations where in fact it did not;
The concept of computation.
Lee Smolin explains the motivation behind the seminar, introduces the discussants and lays out the format of the meeting.
Einsteins profound ideas about relativity and the quantum have provided generations of people with some of the most thought-provoking concepts ever proposed about the wonders and mysteries of our universe. This lively panel discussion will examine Einsteins enormous contributions to our understanding.
We point out that there exit operators, having a clear meaning in cosmology -- they select a given realization of the distribution of primordial density fluctuations --, which can violate Bell inequalities when evaluated in the ''standard'' inflationary quantum distribution. We then consider density matrices which describe partially decohered distributions and show how the importance of the violation decreases with the decoherence level. We determine the critical level beyond which no violation can be obtained.