Cosmologists at Perimeter Institute seek to help pin down the constituents and history of our universe, and the rules governing its origin and evolution. Many of the most interesting clues about physics beyond the standard model (e.g., dark matter, dark energy, the matter/anti-matter asymmetry, and the spectrum of primordial density perturbations], come from cosmological observations, and cosmological observations are often the best way to test or constrain a proposed modification of the laws of nature, since such observations can probe length scales, time scales, and energy scales that are beyond the reach of terrestrial laboratories.
Format results
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15 talks-Collection NumberC17053
Talk
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PSI 2017/2018 - Cosmology - Lecture 1
Perimeter Institute for Theoretical Physics -
PSI 2017/2018 - Cosmology - Lecture 2
Perimeter Institute for Theoretical Physics -
PSI 2017/2018 - Cosmology - Lecture 3
Perimeter Institute for Theoretical Physics -
PSI 2017/2018 - Cosmology - Lecture 4
Perimeter Institute for Theoretical Physics -
PSI 2017/2018 - Cosmology - Lecture 5
Perimeter Institute for Theoretical Physics -
PSI 2017/2018 - Cosmology - Lecture 6
Perimeter Institute for Theoretical Physics -
PSI 2017/2018 - Cosmology - Lecture 7
Perimeter Institute for Theoretical Physics -
PSI 2017/2018 - Cosmology - Lecture 8
Perimeter Institute for Theoretical Physics
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General Relativity for Cosmology (PHYS786/AMATH875) - Achim Kempf
24 talks-Collection NumberC17021Talk
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General Relativity for Cosmology - Lecture 1
University of Waterloo -
General Relativity for Cosmology - Lecture 2
University of Waterloo -
General Relativity for Cosmology - Lecture 3
University of Waterloo -
General Relativity for Cosmology - Lecture 4
University of Waterloo -
General Relativity for Cosmology - Lecture 5
University of Waterloo -
General Relativity for Cosmology - Lecture 6
University of Waterloo -
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General Relativity for Cosmology - Lecture 8
University of Waterloo
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Bounce Scenarios in Cosmology
16 talks-Collection NumberC17024Talk
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Welcome and Opening Remarks
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University of Sheffield
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University of Edinburgh
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Bounce in Loop Quantum Cosmology and its Implications
Pennsylvania State University -
Observable Consequences of a Bounce
Canadian Institute for Theoretical Astrophysics (CITA) -
Challenges for Bouncing Cosmologies
McGill University - Department of Physics -
Emergent bouncing cosmology from quantum gravity condensates
University of New Brunswick -
Discussion Session 2
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TotalEnergies (France)
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University of Sheffield
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Arthur B. McDonald Canadian Astroparticle Physics Research Institute
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PSI 2016/2017 - Explorations in Cosmology (Smith)
14 talks-Collection NumberC17012Talk
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PSI 2016/2017 - Explorations in Cosmology - Lecture 1
Perimeter Institute for Theoretical Physics -
PSI 2016/2017 - Explorations in Cosmology - Lecture 2
Perimeter Institute for Theoretical Physics -
PSI 2016/2017 - Explorations in Cosmology - Lecture 3
Perimeter Institute for Theoretical Physics -
PSI 2016/2017 - Explorations in Cosmology - Lecture 4
Perimeter Institute for Theoretical Physics -
PSI 2016/2017 - Explorations in Cosmology - Lecture 5
Perimeter Institute for Theoretical Physics -
PSI 2016/2017 - Explorations in Cosmology - Lecture 6
Perimeter Institute for Theoretical Physics -
PSI 2016/2017 - Explorations in Cosmology - Lecture 7
Perimeter Institute for Theoretical Physics -
PSI 2016/2017 - Explorations in Cosmology - Lecture 8
Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Cosmology (Kubiznak)
15 talks-Collection NumberC17003Talk
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PSI 2016/2017 - Cosmology (Review) - Lecture 1
Charles University -
PSI 2016/2017 - Cosmology (Review) - Lecture 2
Charles University -
PSI 2016/2017 - Cosmology (Review) - Lecture 3
Charles University -
PSI 2016/2017 - Cosmology (Review) - Lecture 4
Charles University -
PSI 2016/2017 - Cosmology (Review) - Lecture 5
Charles University -
PSI 2016/2017 - Cosmology (Review) - Lecture 6
Charles University -
PSI 2016/2017 - Cosmology (Review) - Lecture 7
Charles University -
PSI 2016/2017 - Cosmology (Review) - Lecture 8
Charles University
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Time in Cosmology
14 talks-Collection NumberC16016Talk
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Welcome and Opening Remarks
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Institute for Astrophysics and Space Sciences
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Perimeter Institute for Theoretical Physics
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University of Edinburgh
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The origin of arrows of time II
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California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Institute for Astrophysics and Space Sciences
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Technical University of Applied Sciences Würzburg-Schweinfurt
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The origin of arrows of time II cont.
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California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Institute for Astrophysics and Space Sciences
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Technical University of Applied Sciences Würzburg-Schweinfurt
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Testing time asymmetry in the early universe
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University of California, San Diego
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University of Lisbon
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University of California, Berkeley
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The fate of the big bang
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Pennsylvania State University
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University of Edinburgh
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Time as Organization – Downward Caustation, Structure and Complexity I
Technische Universität Darmstadt -
Time as Organization – Downward Caustation, Structure and Complexity II
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Santa Fe Institute
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University of Cape Town
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Cosmological Frontiers in Fundamental Physics 2016
21 talks-Collection NumberC16009Talk
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Welcome and Opening Remarks
PIRSA:16060006 -
Dark matter phenomenology across cosmic times
Johns Hopkins University -
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A new probe of primordial magnetic fields at high redshift
University of Southern California -
Turbulent gravity in asymptotically AdS spacetimes
University of Nottingham -
Black hole ringdown and quasinormal modes
The University of Texas at Austin
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Feedback over 44 Orders of Magnitude: From Gamma-rays to the Universe
22 talks-Collection NumberC16004Talk
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30000 foot view of blazar heating
Universität Heidelberg - Institut für Theoretische Physik -
The basics and not-so-basic physics of beam plasmas
University of Castilla-La Mancha -
The Basics of the Gamma-ray Sky: current observational status and future perspectives
Max Planck Institute for Gravitational Physics - Albert Einstein Institute (AEI) -
The thermal state of the intergalactic medium and its effect on galaxy formation
University of Washington -
Models of Galaxy formation: Current constraints on the star formation history and feedback
University of Massachusetts Amherst -
Nonlinear Plasma Instabilities
University of Wisconsin-Milwaukee -
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Superluminality in Effective Field Theories for Cosmology
17 talks-Collection NumberC15019Talk
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Causal structures in Massive gravity and Gauss-Bonnet gravity
National Taiwan University -
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Causality constraints and the lightcone
Swansea University -
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The Cosmic Neutrino Background
University of British Columbia -
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Quasi-Einstein equations and a Myers-Perry rigidity problem
University of Alberta
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PSI 2017/2018 - Cosmology (Smith)
15 talks-Collection NumberC17053PSI 2017/2018 - Cosmology (Smith) -
General Relativity for Cosmology (PHYS786/AMATH875) - Achim Kempf
24 talks-Collection NumberC17021General Relativity for Cosmology (PHYS786/AMATH875) - Achim Kempf -
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PSI 2016/2017 - Explorations in Cosmology (Smith)
14 talks-Collection NumberC17012PSI 2016/2017 - Explorations in Cosmology (Smith) -
PSI 2016/2017 - Cosmology (Kubiznak)
15 talks-Collection NumberC17003PSI 2016/2017 - Cosmology (Kubiznak) -
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Cosmological Frontiers in Fundamental Physics 2016
21 talks-Collection NumberC16009Cosmological Frontiers in Fundamental Physics 2016 -
Feedback over 44 Orders of Magnitude: From Gamma-rays to the Universe
22 talks-Collection NumberC16004Feedback over 44 Orders of Magnitude: From Gamma-rays to the Universe
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Superluminality in Effective Field Theories for Cosmology
17 talks-Collection NumberC15019Superluminality in Effective Field Theories for Cosmology -
The Cosmic Neutrino Background
University of British ColumbiaThe cosmic neutrino background is like the cosmic microwave background, but less photon-y and more neutrino-ey. The CNB is also less talked about than the CMB, mostly because it's nearly impossible to detect directly. But if it could be detected, it would be interesting in several ways that are discussed.
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Quantum droplets of dark matter
Newcastle UniversityVacuum polarisation can destabilise dark matter models made from ultralight, weakly coupled scalar fields. The dark matter condenses into quantum droplets, like those seen in Bose Einstein condensates, and could contribute to explaining some cosmological conundrums. -
Quasi-Einstein equations and a Myers-Perry rigidity problem
University of AlbertaQuasi-Einstein equations are generalizations of the Einstein equation. They arise from warped product Einstein metrics (Kaluza-Klein reductions), Ricci solitons, cosmology, near-horizon geometries, and smooth measured Lorentzian length spaces. Despite their apparent generality, they often have a surprising rigidity. I will review some recent developments in the area, focusing on near-horizon geometries, including Dunajski and Lucietti's near-horizon version of the Hawking rigidity theorem. I will discuss an application to 5-dimensional extreme (Myers-Perry type) black holes whose horizons admit the structure of the group SU(2).