International Summer School for Young Physicists is a national two-week summer school designed to capture the scientific imagination of grade 11 students (secondaire V in Quebec) and nurture their passion for physics through an exploration of the fascinating mysteries of our universe. http://pirsa.org/podcast/C08016 Science 2012 http://blogs.law.harvard.edu/tech/rss en-ca Thu, 09 Feb 2012 04:43:41 -0500 sbradwell@perimeterinstitute.ca Thu, 09 Feb 2012 04:43:41 -0500 G 180 pirsa-admin@perimeterinstitute.ca Steve Bradwell's - Podcast Generator Richard Epp http://streamer.perimeterinstitute.ca/mp3/f59b7a88-c6d8-4671-8c21-0bdba71b17b7.mp3 Science http://streamer.perimeterinstitute.ca/mp3/f59b7a88-c6d8-4671-8c21-0bdba71b17b7.mp3 Thu, 24 Jul 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/f57a0896-eba5-49a1-99c9-7c18487c0c57.mp3 Science http://streamer.perimeterinstitute.ca/mp3/f57a0896-eba5-49a1-99c9-7c18487c0c57.mp3 Thu, 24 Jul 2008 10:30:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/30857722-b10f-4b40-b335-0d5a7acad70c.mp3 Science http://streamer.perimeterinstitute.ca/mp3/30857722-b10f-4b40-b335-0d5a7acad70c.mp3 Fri, 25 Jul 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/b25f75f8-b4cd-4bd1-a47e-456899845e71.mp3 Science http://streamer.perimeterinstitute.ca/mp3/b25f75f8-b4cd-4bd1-a47e-456899845e71.mp3 Fri, 25 Jul 2008 10:30:00 -0400 Join our ISSYP students in meeting one of our researchers and asking her a variety of interesting questions about her life as a theoretical physicist. Chanda Prescod-Weinstein http://streamer.perimeterinstitute.ca/mp3/cea9c06d-14b6-42d6-8ab8-29a540008f19.mp3 Science http://streamer.perimeterinstitute.ca/mp3/cea9c06d-14b6-42d6-8ab8-29a540008f19.mp3 Fri, 25 Jul 2008 13:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/62c4d83f-a9b6-4f04-aa9d-4eb6dc2c0f07.mp3 Science http://streamer.perimeterinstitute.ca/mp3/62c4d83f-a9b6-4f04-aa9d-4eb6dc2c0f07.mp3 Sat, 26 Jul 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/c0ee9395-0edf-44f9-9596-05fd6ec40d8b.mp3 Science http://streamer.perimeterinstitute.ca/mp3/c0ee9395-0edf-44f9-9596-05fd6ec40d8b.mp3 Sat, 26 Jul 2008 10:30:00 -0400 Amanda Peet received her Ph.D. at Stanford University and currently is Associate Professor at the University of Toronto, her “intellectual home base.” She is also an Affiliate Member of Perimeter Institute. Amanda's goal is to understand the fundamental dynamics of all forces and particles seen so far in Nature, especially gravity. Broadly: She studies the quantum dynamics of interactions between gravity and matter using string theory, with applications to black holes and cosmology, and links to gauge theory and particle physics. Past work has focused on the black hole information paradox, black hole entropy, D-brane models of black holes, duality, holography, building of new geometries, spacetime singularity resolution, and cosmology. Amanda continues to develop these interests, as well as develop others as new particle accelerator data from LHC and cosmological data (further) influence the field. Amanda Peet http://streamer.perimeterinstitute.ca/mp3/354e156f-76e7-4104-ab67-be1ea31cd423.mp3 Science http://streamer.perimeterinstitute.ca/mp3/354e156f-76e7-4104-ab67-be1ea31cd423.mp3 Sat, 26 Jul 2008 13:00:00 -0400 Amanda Peet http://streamer.perimeterinstitute.ca/mp3/354e156f-76e7-4104-ab67-be1ea31cd423.mp3 Science http://streamer.perimeterinstitute.ca/mp3/354e156f-76e7-4104-ab67-be1ea31cd423.mp3 Sat, 26 Jul 2008 13:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/1a6448ab-6d6e-4900-9b09-0035a7b7a3de.mp3 Science http://streamer.perimeterinstitute.ca/mp3/1a6448ab-6d6e-4900-9b09-0035a7b7a3de.mp3 Sun, 27 Jul 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/7d1fd935-541f-490d-9697-b51d92598d42.mp3 Science http://streamer.perimeterinstitute.ca/mp3/7d1fd935-541f-490d-9697-b51d92598d42.mp3 Sun, 27 Jul 2008 10:30:00 -0400 Robin Blume-Kohout http://streamer.perimeterinstitute.ca/mp3/a9395e96-93ab-4f14-a9e0-a53cb16bab0f.mp3 Science http://streamer.perimeterinstitute.ca/mp3/a9395e96-93ab-4f14-a9e0-a53cb16bab0f.mp3 Tue, 29 Jul 2008 09:00:00 -0400 Robin Blume-Kohout http://streamer.perimeterinstitute.ca/mp3/a9395e96-93ab-4f14-a9e0-a53cb16bab0f.mp3 Science http://streamer.perimeterinstitute.ca/mp3/a9395e96-93ab-4f14-a9e0-a53cb16bab0f.mp3 Tue, 29 Jul 2008 09:00:00 -0400 Michael Burns http://streamer.perimeterinstitute.ca/mp3/4206a6da-67e5-4a7f-aee7-ec5153da4ee3.mp3 Science http://streamer.perimeterinstitute.ca/mp3/4206a6da-67e5-4a7f-aee7-ec5153da4ee3.mp3 Wed, 30 Jul 2008 14:00:00 -0400 Michael Burns http://streamer.perimeterinstitute.ca/mp3/92e5b1cf-1389-42e4-8892-37da4e0d31b8.mp3 Science http://streamer.perimeterinstitute.ca/mp3/92e5b1cf-1389-42e4-8892-37da4e0d31b8.mp3 Wed, 30 Jul 2008 15:30:00 -0400 In the first part of the talk, a brief introduction to general relativity and quantum theory is given. Their independent successes are discussed, as well as the desire and difficulty in merging them, to obtain a unique language to describe the universe. Then, I focus on Loop quantum gravity, a particular approach towards this objective, in which a discrete microscopic structure of spacetime is envisaged. Simone Speziale http://streamer.perimeterinstitute.ca/mp3/8aabf350-3a2c-4ed6-a397-e033d2d0a298.mp3 Science http://streamer.perimeterinstitute.ca/mp3/8aabf350-3a2c-4ed6-a397-e033d2d0a298.mp3 Fri, 01 Aug 2008 09:00:00 -0400 In the first part of the talk, a brief introduction to general relativity and quantum theory is given. Their independent successes are discussed, as well as the desire and difficulty in merging them, to obtain a unique language to describe the universe. Then I focus on Loop quantum gravity, a particular approach towards this objective, in which a discrete microscopic structure of spacetime is envisaged. Simone Speziale http://streamer.perimeterinstitute.ca/mp3/8aabf350-3a2c-4ed6-a397-e033d2d0a298.mp3 Science http://streamer.perimeterinstitute.ca/mp3/8aabf350-3a2c-4ed6-a397-e033d2d0a298.mp3 Fri, 01 Aug 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/0607aa01-ab1e-46e4-a00a-d1f55cbb62e0.mp3 Science http://streamer.perimeterinstitute.ca/mp3/0607aa01-ab1e-46e4-a00a-d1f55cbb62e0.mp3 Fri, 01 Aug 2008 14:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/3c8e9c38-e204-4b61-8cbb-923341fa1102.mp3 Science http://streamer.perimeterinstitute.ca/mp3/3c8e9c38-e204-4b61-8cbb-923341fa1102.mp3 Fri, 01 Aug 2008 15:30:00 -0400 Michael Burns,Mark Ackersviller http://streamer.perimeterinstitute.ca/mp3/7dcfffc3-eb27-4f12-b3f9-90c53e9db815.mp3 Science http://streamer.perimeterinstitute.ca/mp3/7dcfffc3-eb27-4f12-b3f9-90c53e9db815.mp3 Sat, 02 Aug 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/4605cc41-edd6-43f9-87b3-1c3a38f4bbed.mp3 Science http://streamer.perimeterinstitute.ca/mp3/4605cc41-edd6-43f9-87b3-1c3a38f4bbed.mp3 Sun, 10 Aug 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/b637b4af-7087-4201-9836-8b58f7a7101f.mp3 Science http://streamer.perimeterinstitute.ca/mp3/b637b4af-7087-4201-9836-8b58f7a7101f.mp3 Sun, 10 Aug 2008 10:30:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/81641113-6a0f-4a47-a646-0788c525d091.mp3 Science http://streamer.perimeterinstitute.ca/mp3/81641113-6a0f-4a47-a646-0788c525d091.mp3 Mon, 11 Aug 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/cb16fbea-5ab3-46c7-a26a-aa5d994f6b4d.mp3 Science http://streamer.perimeterinstitute.ca/mp3/cb16fbea-5ab3-46c7-a26a-aa5d994f6b4d.mp3 Mon, 11 Aug 2008 10:30:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/24c5cd25-484d-4ec1-8dab-69dfdd7f8f55.mp3 Science http://streamer.perimeterinstitute.ca/mp3/24c5cd25-484d-4ec1-8dab-69dfdd7f8f55.mp3 Tue, 12 Aug 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/a59d5c01-d575-4ce4-895f-896f42ae7d75.mp3 Science http://streamer.perimeterinstitute.ca/mp3/a59d5c01-d575-4ce4-895f-896f42ae7d75.mp3 Tue, 12 Aug 2008 10:30:00 -0400 Symmetry principles in physics are a very powerful guiding principle. Sometimes they are so powerful that they can determine a theory completely. This talk will be a tour from the Standard Model of particle physics to string theory compactifications using mostly symmetry arguments. Freddy Cachazo http://streamer.perimeterinstitute.ca/mp3/e9305f2f-bbd4-4f3d-a446-6bf63ae2214f.mp3 Science http://streamer.perimeterinstitute.ca/mp3/e9305f2f-bbd4-4f3d-a446-6bf63ae2214f.mp3 Tue, 12 Aug 2008 13:00:00 -0400 Symmetry principles in physics are a very powerful guiding principle. Sometimes they are so powerful that they can determine a theory completely. This talk will be a tour from the Standard Model of particle physics to string theory compactifications using mostly symmetry arguments. Freddy Cachazo http://streamer.perimeterinstitute.ca/mp3/e9305f2f-bbd4-4f3d-a446-6bf63ae2214f.mp3 Science http://streamer.perimeterinstitute.ca/mp3/e9305f2f-bbd4-4f3d-a446-6bf63ae2214f.mp3 Tue, 12 Aug 2008 13:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/fcc4826e-ae38-49c1-bbc1-9d3be60f04bc.mp3 Science http://streamer.perimeterinstitute.ca/mp3/fcc4826e-ae38-49c1-bbc1-9d3be60f04bc.mp3 Wed, 13 Aug 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/6adb819a-3218-457b-afdf-c93ad85a7b47.mp3 Science http://streamer.perimeterinstitute.ca/mp3/6adb819a-3218-457b-afdf-c93ad85a7b47.mp3 Wed, 13 Aug 2008 10:30:00 -0400 Put two physicists in a room and ask them to talk about the interpretation of quantum mechanics. This is a recipe for disagreement; the mysteries of quantum theory run so deep that it’s hard to find any interpretive claims that are immune to controversy. Therefore, when thinking about quantum theory, it is a useful tactic to first focus on the macroscopic facts it predicts while ignoring the formalism and what it might suggest about the constitution of reality. I will adopt this tactic in my talk to describe the strange features of sequences of Stern-Gerlach measurements. This background will be enough to formulate the principle of “no information gain without disturbance” and the technological possibilities it implies, such as money that can’t be counterfeit and secure ways of distributing secret keys for cryptography. I’ll then move on to explain one idea about what might be going on at a deeper level – the idea of hidden variables. Finally, I’ll present Bell’s theorem, a result that reveals an uncomfortable tension between quantum mechanics and the theory of relativity. Robert Spekkens http://streamer.perimeterinstitute.ca/mp3/499d946f-3683-4108-bc0d-b493d8978414.mp3 Science http://streamer.perimeterinstitute.ca/mp3/499d946f-3683-4108-bc0d-b493d8978414.mp3 Fri, 15 Aug 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/12e8ca25-08e5-44e4-9ef6-14b6cd5c1b82.mp3 Science http://streamer.perimeterinstitute.ca/mp3/12e8ca25-08e5-44e4-9ef6-14b6cd5c1b82.mp3 Fri, 15 Aug 2008 14:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/b95b675a-73af-4a9d-92f7-6f15bd0dc9da.mp3 Science http://streamer.perimeterinstitute.ca/mp3/b95b675a-73af-4a9d-92f7-6f15bd0dc9da.mp3 Fri, 15 Aug 2008 15:30:00 -0400 We will review the uncertainty principle of quantum mechanics, first formulated by Werner Heisenberg in 1927, and the role they played in the famous debate between Einstein and Bohr on the meaning of quantum theory. Along the way we will focus on questions like: what do we mean by “uncertainty”, and how do we express that in the theory? What, in fact, is a physical property? Does a theory like quantum mechanics provide a description of physical reality? Interestingly, some of these questions do not have a unique answer. Jos Uffink http://streamer.perimeterinstitute.ca/mp3/f499c086-20c8-43d0-886f-9876a4646d64.mp3 Science http://streamer.perimeterinstitute.ca/mp3/f499c086-20c8-43d0-886f-9876a4646d64.mp3 Sat, 16 Aug 2008 09:00:00 -0400 We will review the uncertainty principle of quantum mechanics, first formulated by Werner Heisenberg in 1927, and the role they played in the famous debate between Einstein and Bohr on the meaning of quantum theory. Along the way we will focus on questions like: what do we mean by "uncertainty", and how do we express that in the theory? What, in fact, is a physical property? Does a theory like quantum mechanics provide a description of physical reality? Interestingly, some of these questions do not have a unique answer. Jos Uffink http://streamer.perimeterinstitute.ca/mp3/f499c086-20c8-43d0-886f-9876a4646d64.mp3 Science http://streamer.perimeterinstitute.ca/mp3/f499c086-20c8-43d0-886f-9876a4646d64.mp3 Sat, 16 Aug 2008 09:00:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/c8a7632d-6df8-482a-9ff8-5898d3e835fd.mp3 Science http://streamer.perimeterinstitute.ca/mp3/c8a7632d-6df8-482a-9ff8-5898d3e835fd.mp3 Sat, 16 Aug 2008 14:30:00 -0400 Richard Epp http://streamer.perimeterinstitute.ca/mp3/8cd0473a-312c-4e99-9a0a-d69666b5659a.mp3 Science http://streamer.perimeterinstitute.ca/mp3/8cd0473a-312c-4e99-9a0a-d69666b5659a.mp3 Sat, 16 Aug 2008 15:30:00 -0400 One simple way to think about physics is in terms of information. We gain information about physical systems by observing them, and with luck this data allows us to predict what they will do next. Quantum mechanics doesn't just change the rules about how physical objects behave - it changes the rules about how information behaves. In this talk we explore what quantum information is, and how strangely it differs from our intuitions. In particular we see how information about quantum particles can become entangled, leading to seemingly impossibly coordinated behaviour for separate objects, and to phenomena such as quantum teleportation. Jonathan Walgate http://streamer.perimeterinstitute.ca/mp3/5d126a74-cb68-4e6e-afd8-4af5b8cbf090.mp3 Science http://streamer.perimeterinstitute.ca/mp3/5d126a74-cb68-4e6e-afd8-4af5b8cbf090.mp3 Mon, 18 Aug 2008 09:00:00 -0400 One simple way to think about physics is in terms of information. We gain information about physical systems by observing them, and with luck this data allows us to predict what they will do next. Quantum mechanics doesn't just change the rules about how physical objects behave - it changes the rules about how information behaves. In this talk we explore what quantum information is, and how strangely it differs from our intuitions. In particular we see how information about quantum particles can become entangled, leading to seemingly impossibly coordinated behaviour for separate objects, and to phenomena such as quantum teleportation. Jonathan Walgate http://streamer.perimeterinstitute.ca/mp3/5d126a74-cb68-4e6e-afd8-4af5b8cbf090.mp3 Science http://streamer.perimeterinstitute.ca/mp3/5d126a74-cb68-4e6e-afd8-4af5b8cbf090.mp3 Mon, 18 Aug 2008 09:00:00 -0400 The reason cosmologists have a job is that the Universe as a whole -- the stuff between planets and stars and galaxies -- is, despite first appearances, a pretty interesting place. The strangest fact about it is that it's expanding, and always has been, as far as we know (and though Einstein's theory of gravity predicts this, Albert himself didn't much care for the idea, at least at first). After about seventy years -- it was discovered in 1929 -- this expansion was kind of old hat, but then new observations came around that shattered the old complacency. The old idea was that the Universe was expanding, but slowing down as it went -- since gravity, as far as anyone knew, could only cause attractive forces. What the new observations demonstrated is that the Universe's expansion is, in fact, accelerating -- getting faster with time. This is so shocking that most astronomers and cosmologists couldn't believe it at first, and some still don't. In this talk, I'll explain a bit about how we know this, why it's so shocking, and tell you something about the crazy ideas people at Perimeter have for what's going on. Mark Wyman http://streamer.perimeterinstitute.ca/mp3/fa293506-5c0e-4770-82c8-17f3922ad4dc.mp3 Science http://streamer.perimeterinstitute.ca/mp3/fa293506-5c0e-4770-82c8-17f3922ad4dc.mp3 Tue, 19 Aug 2008 09:00:00 -0400 The reason cosmologists have a job is that the Universe as a whole -- the stuff between planets and stars and galaxies -- is, despite first appearances, a pretty interesting place. The strangest fact about it is that it's expanding, and always has been, as far as we know (and though Einstein's theory of gravity predicts this, Albert himself didn't much care for the idea, at least at first). After about seventy years -- it was discovered in 1929 -- this expansion was kind of old hat, but then new observations came around that shattered the old complacency. The old idea was that the Universe was expanding, but slowing down as it went -- since gravity, as far as anyone knew, could only cause attractive forces. What the new observations demonstrated is that the Universe's expansion is, in fact, accelerating -- getting faster with time. This is so shocking that most astronomers and cosmologists couldn't believe it at first, and some still don't. In this talk, I'll explain a bit about how we know this, why it's so shocking, and tell you something about the crazy ideas people at Perimeter have for what's going on. Mark Wyman http://streamer.perimeterinstitute.ca/mp3/fa293506-5c0e-4770-82c8-17f3922ad4dc.mp3 Science http://streamer.perimeterinstitute.ca/mp3/fa293506-5c0e-4770-82c8-17f3922ad4dc.mp3 Tue, 19 Aug 2008 09:00:00 -0400 In the 1980’s when Vera Rubin was analyzing how stars in galaxies revolve around the galactic core, she made an incredible discovery. The stars where moving much faster than anyone expected. This discovery helped open up a door in physics whose implications are far stranger than the best plot in any science fiction movie. Join us as we explore the mystery of dark matter. Michael Burns,Mark Ackersviller http://streamer.perimeterinstitute.ca/mp3/d1db051d-dd93-4cf7-99f3-51c7dfe32ebc.mp3 Science http://streamer.perimeterinstitute.ca/mp3/d1db051d-dd93-4cf7-99f3-51c7dfe32ebc.mp3 Tue, 19 Aug 2008 10:30:00 -0400