Astrophysics

Displaying 1249 - 1260 of 2174

Explorations in Cosmology - Lecture 8
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 21, 2012

PIRSA:12030032
Astrophysics
Some new things to do with the CMB and galaxy surveys

Marc Kamionkowski Johns Hopkins University - Department of Physics & Astronomy
March 20, 2012

PIRSA:12030090
Astrophysics
Explorations in Cosmology - Lecture 7
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 20, 2012

PIRSA:12030031
Astrophysics
G-Bounce

Alexander Vikman European Organization for Nuclear Research (CERN)
March 19, 2012

PIRSA:12030103
Astrophysics
Explorations in Cosmology - Lecture 6
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 19, 2012

PIRSA:12030030
Astrophysics
Explorations in Cosmology - Lecture 5
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 16, 2012

PIRSA:12030027
Astrophysics
Explorations in Cosmology - Lecture 4
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 15, 2012

PIRSA:12030026
Astrophysics
Explorations in Cosmology - Lecture 3
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 14, 2012

PIRSA:12030025
Astrophysics
Explorations in Cosmology - Lecture 2
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 13, 2012

PIRSA:12030024
Astrophysics
Explorations in Cosmology - Lecture 1
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 12, 2012

PIRSA:12030023
Astrophysics
Cosmic Mysteries

Richard Epp University of Waterloo
March 07, 2012

PIRSA:12030138
Astrophysics
From Massive Gravity to Interacting Spin-2 Fields

Rachel Rosen Carnegie Mellon University
March 06, 2012

PIRSA:12030063
Astrophysics

Explorations in Cosmology - Lecture 8
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 21, 2012

PIRSA:12030032
Astrophysics
Some new things to do with the CMB and galaxy surveys

Marc Kamionkowski Johns Hopkins University - Department of Physics & Astronomy
March 20, 2012

PIRSA:12030090
Astrophysics
Over the past several decades we have obtained increasingly precise data on the distribution of galaxies in the Universe and on the distribution of primordial perturbations via CMB measurements. This trend is likely to continue for the foreseeable future. In this talk I will discuss some new things to do with data from the CMB, galaxy surveys, and future 21-cm surveys look for new physics in the early and late Universe. Topics will include cosmic birefringence, new tests for parity violation, gravitational lensing, gravitational waves, and new inflationary physics.
Explorations in Cosmology - Lecture 7
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 20, 2012

PIRSA:12030031
Astrophysics
G-Bounce

Alexander Vikman European Organization for Nuclear Research (CERN)
March 19, 2012

PIRSA:12030103
Astrophysics
I will discuss a wide class of models which realise a bounce in a spatially flat Friedmann universe in standard General Relativity. The key ingredient is a noncanonical, minimally coupled scalar field
belonging to the class of theories with Kinetic Gravity Braiding/Galileon-like self-couplings. In these models, the universe smoothly volves from contraction to expansion, suffering neither from ghosts
nor gradient instabilities around the turning point. The end-point of he evolution can be a standard radiation-domination era or an nflationary phase.
The talk is based on arXiv:1109.1047v2 [hep-th], JCAP11(2011)021.
Explorations in Cosmology - Lecture 6
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 19, 2012

PIRSA:12030030
Astrophysics
Explorations in Cosmology - Lecture 5
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 16, 2012

PIRSA:12030027
Astrophysics
Explorations in Cosmology - Lecture 4
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 15, 2012

PIRSA:12030026
Astrophysics
Explorations in Cosmology - Lecture 3
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 14, 2012

PIRSA:12030025
Astrophysics
Explorations in Cosmology - Lecture 2
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 13, 2012

PIRSA:12030024
Astrophysics
Explorations in Cosmology - Lecture 1
- Louis Leblond Pennsylvania State University
- Matthew Johnson York University
March 12, 2012

PIRSA:12030023
Astrophysics
Cosmic Mysteries

Richard Epp University of Waterloo
March 07, 2012

PIRSA:12030138
Astrophysics
Albert Einstein wrote that “The most beautiful experience we can have is the mysterious.” In his talk, Dr. Epp will explore how the process of science—wonder & curiosity coupled with imagination & reasoning—has led to some of the greatest discoveries and deepest mysteries about the structure, evolution and origin of the universe. This lecture will celebrate the power of science to deepen our sense of cosmic wonder as we stand before the present-day mysteries of Dark Matter, Dark Energy and the Big Bang.
From Massive Gravity to Interacting Spin-2 Fields

Rachel Rosen Carnegie Mellon University
March 06, 2012

PIRSA:12030063
Astrophysics
Recent progress in massive gravity has made it possible to construct consistent theories of interacting spin-2 fields. In this talk I'll describe these developments, focusing on the resolution of the Boulware-Deser ghost problem and the promotion of massive gravity to a bimetric theory of gravity with two dynamical, interacting spin-2 fields. I'll then discuss the generalization of these bimetric theories to theories of multiple interacting spin-2 fields.

Title	Speaker(s)	Date	Talk Type	Info link
Explorations in Cosmology - Lecture 8	Louis Leblond, Matthew Johnson	2012-03-21	Course	View details
Some new things to do with the CMB and galaxy surveys	Marc Kamionkowski	2012-03-20	Scientific Series	View details
Explorations in Cosmology - Lecture 7	Louis Leblond, Matthew Johnson	2012-03-20	Course	View details
G-Bounce	Alexander Vikman	2012-03-19	Scientific Series	View details
Explorations in Cosmology - Lecture 6	Louis Leblond, Matthew Johnson	2012-03-19	Course	View details
Explorations in Cosmology - Lecture 5	Louis Leblond, Matthew Johnson	2012-03-16	Course	View details
Explorations in Cosmology - Lecture 4	Louis Leblond, Matthew Johnson	2012-03-15	Course	View details
Explorations in Cosmology - Lecture 3	Louis Leblond, Matthew Johnson	2012-03-14	Course	View details
Explorations in Cosmology - Lecture 2	Louis Leblond, Matthew Johnson	2012-03-13	Course	View details
Explorations in Cosmology - Lecture 1	Louis Leblond, Matthew Johnson	2012-03-12	Course	View details
Cosmic Mysteries	Richard Epp	2012-03-07	Public Lectures	View details
From Massive Gravity to Interacting Spin-2 Fields	Rachel Rosen	2012-03-06	Scientific Series	View details

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Format results

Explorations in Cosmology - Lecture 8

Some new things to do with the CMB and galaxy surveys

Explorations in Cosmology - Lecture 7

G-Bounce

Explorations in Cosmology - Lecture 6

Explorations in Cosmology - Lecture 5

Explorations in Cosmology - Lecture 4

Explorations in Cosmology - Lecture 3

Explorations in Cosmology - Lecture 2

Explorations in Cosmology - Lecture 1

Cosmic Mysteries

From Massive Gravity to Interacting Spin-2 Fields

Explorations in Cosmology - Lecture 8

Some new things to do with the CMB and galaxy surveys

Explorations in Cosmology - Lecture 7

G-Bounce

Explorations in Cosmology - Lecture 6

Explorations in Cosmology - Lecture 5

Explorations in Cosmology - Lecture 4

Explorations in Cosmology - Lecture 3

Explorations in Cosmology - Lecture 2

Explorations in Cosmology - Lecture 1

Cosmic Mysteries

From Massive Gravity to Interacting Spin-2 Fields