Format results
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Talk
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General Relativity for Cosmology - Lecture 23
Achim Kempf University of Waterloo
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General Relativity for Cosmology - Lecture 22
Achim Kempf University of Waterloo
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General Relativity for Cosmology - Lecture 21
Achim Kempf University of Waterloo
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General Relativity for Cosmology - Lecture 20
Achim Kempf University of Waterloo
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General Relativity for Cosmology - Lecture 19
Achim Kempf University of Waterloo
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General Relativity for Cosmology - Lecture 18
Achim Kempf University of Waterloo
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General Relativity for Cosmology - Lecture 17
Achim Kempf University of Waterloo
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General Relativity for Cosmology - Lecture 16
Achim Kempf University of Waterloo
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Talk
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Welcome and Opening Remarks
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Steffen Gielen University of Sheffield
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Neil Turok University of Edinburgh
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Bounce in Loop Quantum Cosmology and its Implications
Abhay Ashtekar Pennsylvania State University
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Observable Consequences of a Bounce
Ue-Li Pen Canadian Institute for Theoretical Astrophysics (CITA)
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Challenges for Bouncing Cosmologies
Robert Brandenberger McGill University - Department of Physics
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Emergent bouncing cosmology from quantum gravity condensates
Edward Wilson-Ewing University of New Brunswick
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Discussion Session 2
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Angelika Fertig TotalEnergies (France)
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Steffen Gielen University of Sheffield
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Elizabeth Gould Arthur B. McDonald Canadian Astroparticle Physics Research Institute
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Talk
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PSI 2016/2017 - Explorations in Cosmology - Lecture 14
Kendrick Smith Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Cosmology - Lecture 13
Kendrick Smith Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Cosmology - Lecture 12
Kendrick Smith Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Cosmology - Lecture 11
Kendrick Smith Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Cosmology - Lecture 10
Kendrick Smith Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Cosmology - Lecture 9
Kendrick Smith Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Cosmology - Lecture 8
Kendrick Smith Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Cosmology - Lecture 7
Kendrick Smith Perimeter Institute for Theoretical Physics
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Talk
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PSI 2016/2017 - Cosmology (Review) - Lecture 15
David Kubiznak Charles University
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PSI 2016/2017 - Cosmology (Review) - Lecture 14
David Kubiznak Charles University
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PSI 2016/2017 - Cosmology (Review) - Lecture 13
David Kubiznak Charles University
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PSI 2016/2017 - Cosmology (Review) - Lecture 12
David Kubiznak Charles University
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PSI 2016/2017 - Cosmology (Review) - Lecture 11
David Kubiznak Charles University
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PSI 2016/2017 - Cosmology (Review) - Lecture 10
David Kubiznak Charles University
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PSI 2016/2017 - Cosmology (Review) - Lecture 9
David Kubiznak Charles University
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PSI 2016/2017 - Cosmology (Review) - Lecture 8
David Kubiznak Charles University
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Talk
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Welcome and Opening Remarks
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Marina Cortes Institute for Astrophysics and Space Sciences
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Lee Smolin Perimeter Institute for Theoretical Physics
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Neil Turok University of Edinburgh
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The origin of arrows of time II
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Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Marina Cortes Institute for Astrophysics and Space Sciences
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Tim Koslowski Technical University of Applied Sciences Würzburg-Schweinfurt
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The origin of arrows of time II cont.
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Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Marina Cortes Institute for Astrophysics and Space Sciences
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Tim Koslowski Technical University of Applied Sciences Würzburg-Schweinfurt
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Testing time asymmetry in the early universe
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Brian Keating University of California, San Diego
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Andrew Liddle University of Lisbon
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Richard Muller University of California, Berkeley
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The fate of the big bang
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Abhay Ashtekar Pennsylvania State University
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Neil Turok University of Edinburgh
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Time as Organization – Downward Caustation, Structure and Complexity I
Barbara Drossel Technische Universität Darmstadt
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Time as Organization – Downward Caustation, Structure and Complexity II
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Stuart Kauffman Santa Fe Institute
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George Ellis University of Cape Town
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Talk
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Welcome and Opening Remarks
PIRSA:16060006 -
Dark matter phenomenology across cosmic times
Yacine Ali-Haimoud Johns Hopkins University
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A new probe of primordial magnetic fields at high redshift
Vera Gluscevic University of Southern California
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Turbulent gravity in asymptotically AdS spacetimes
Stephen Green University of Nottingham
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Black hole ringdown and quasinormal modes
Aaron Zimmerman The University of Texas at Austin
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Talk
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30000 foot view of blazar heating
Christoph Pfrommer Universität Heidelberg - Institut für Theoretische Physik
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The basics and not-so-basic physics of beam plasmas
Antoine Bret University of Castilla-La Mancha
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The Basics of the Gamma-ray Sky: current observational status and future perspectives
Jim Hinton Max Planck Institute for Gravitational Physics - Albert Einstein Institute (AEI)
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The thermal state of the intergalactic medium and its effect on galaxy formation
Matthew McQuinn University of Washington
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Models of Galaxy formation: Current constraints on the star formation history and feedback
Hojun Mo University of Massachusetts Amherst
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Nonlinear Plasma Instabilities
Philip Chang University of Wisconsin-Milwaukee
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Talk
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Causal structures in Massive gravity and Gauss-Bonnet gravity
Keisuke Izumi National Taiwan University
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Causality constraints and the lightcone
Timothy Hollowood Swansea University
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CMB-HD as a Probe of Dark Matter on Sub-Galactic Scales
Neelima Sehgal Stony Brook University
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Probes of cosmic inflation: from the CMB to quantum systems
Emilie Hertig University of Cambridge
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The speed of sound in the EFTofLSS
Caio Nascimento University of Washington
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Lecture - Relativity, PHYS 604
Ghazal Geshnizjani Perimeter Institute for Theoretical Physics
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General Relativity for Cosmology (PHYS786/AMATH875) - Achim Kempf
General Relativity for Cosmology (PHYS786/AMATH875) - Achim Kempf -
Bounce Scenarios in Cosmology
Bounce Scenarios in Cosmology
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PSI 2016/2017 - Explorations in Cosmology (Smith)
PSI 2016/2017 - Explorations in Cosmology (Smith) -
PSI 2016/2017 - Cosmology (Kubiznak)
PSI 2016/2017 - Cosmology (Kubiznak) -
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Cosmological Frontiers in Fundamental Physics 2016
Cosmological Frontiers in Fundamental Physics 2016 -
Feedback over 44 Orders of Magnitude: From Gamma-rays to the Universe
Feedback over 44 Orders of Magnitude: From Gamma-rays to the Universe
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Superluminality in Effective Field Theories for Cosmology
Superluminality in Effective Field Theories for Cosmology -
CMB-HD as a Probe of Dark Matter on Sub-Galactic Scales
Neelima Sehgal Stony Brook University
In this talk I will discuss the potential of future high-resolution CMB observations to probe structure on sub-galactic scales. In particular, I will discuss how a CMB-HD experiment can measure lensing over the range 0.005 h/Mpc < k < 55 h/Mpc, spanning four orders of magnitude, with a total lensing signal-to-noise ratio from the temperature, polarization, and lensing power spectra greater than 1900. These lensing measurements would allow CMB-HD to distinguish between cold dark matter (CDM) and non-CDM models that can resolve apparent small-scale tensions with CDM. In addition, CMB-HD can distinguish between baryonic feedback effects and non-CDM models due to the different way each impacts the lensing signal. The kinetic Sunyaev-Zel’dovich power spectrum measured by CMB-HD further constrains non-CDM models that deviate from CDM. In sum, future CMB experiments will not only measure traditional cosmological parameters with unprecedented precision, but will also simultaneously constrain baryonic physics and dark matter properties that impact sub-galactic scales.
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Probes of cosmic inflation: from the CMB to quantum systems
Emilie Hertig University of Cambridge
Polarization anisotropies of the cosmic microwave background (CMB) encode a wealth of information on fundamental physics. In the coming decade, a new generation of instruments starting with the Simons Observatory (SO) will either detect or tightly constrain the amplitude of B-mode patterns produced by inflationary gravitational waves. The first part of my talk will focus on techniques developed to mitigate secondary B-modes induced by Galactic foregrounds and weak gravitational lensing, in order to extract the primordial signal with optimal precision. I will present resulting performance forecasts for SO, as well as initial efforts to apply these methods to the new data currently being collected. At the other end of the scale, complementary approaches based on numerical simulations and cold-atom analogue experiments are emerging as a way of probing early-Universe quantum dynamics in real time. The second part of my talk will introduce ongoing work on lattice simulations of false vacuum decay, aiming to understand their range of validity by investigating renormalization effects. Finally, I will outline future avenues for combining cosmological and quantum probes of inflation, exploiting the deep connection between the smallest and largest scales to gain a new perspective on the early Universe. -
The speed of sound in the EFTofLSS
Caio Nascimento University of Washington
The Effective Field Theory of Large Scale Structure (EFTofLSS) has found tremendous success as a perturbative framework for the evolution of large scale structure, and it is now routinely used to compare theoretical predictions against cosmological observations. The model for the total matter field includes one nuisance parameter at 1-loop order, the effective sound speed, which can be extracted by matching the EFT to full N-body simulations. In this talk we explore two different directions related to the effective sound speed. We first show that its emergence can be understood even without effective field theory ingredients, through a perturbative framework that solves the Vlasov-Poisson system of equations directly in phase space. However, we will argue that the EFT is necessary to ensure self-consistency. We then discuss how one can estimate the effective sound speed, via separate universe techniques, with analytic calculations. The estimate is in good agreement with simulation results, and we show it can be used to extract the cosmology dependence of the effective sound speed and to shed light on what cosmic structures shape its value.
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