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Not so random walks in cosmology

Ravi Sheth University of Pennsylvania
September 24, 2013

PIRSA:13090063
Astrophysics
13/14 PSI - Quantum Theory - Lecture 12

Joseph Emerson Institute for Quantum Computing (IQC)

September 24, 2013

PIRSA:13090045
13/14 PSI - Relativity - Lecture 12

Neil Turok University of Edinburgh

September 24, 2013

PIRSA:13090026
13/14 PSI - Quantum Theory - Lecture 11

Joseph Emerson Institute for Quantum Computing (IQC)

September 23, 2013

PIRSA:13090044
13/14 PSI - Relativity - Lecture 11

Neil Turok University of Edinburgh

September 23, 2013

PIRSA:13090025
13/14 PSI - Quantum Theory - Lecture 10

Joseph Emerson Institute for Quantum Computing (IQC)

September 20, 2013

PIRSA:13090041
13/14 PSI - Relativity - Lecture 10

Neil Turok University of Edinburgh

September 20, 2013

PIRSA:13090022
General Relativity for Cosmology - Lecture 2

Achim Kempf University of Waterloo

September 19, 2013

PIRSA:13090004
The World is Discrete

Olaf Dreyer Freelance Consultant
September 19, 2013

PIRSA:13090073
General Relativity & Quantum Cosmology
13/14 PSI - Quantum Theory - Lecture 9

Joseph Emerson Institute for Quantum Computing (IQC)

September 19, 2013

PIRSA:13090040
13/14 PSI - Relativity - Lecture 9

Neil Turok University of Edinburgh

September 19, 2013

PIRSA:13090021
Short Gamma-Ray Bursts and the Electromagnetic Counterparts of Gravitational Wave Sources

Edo Berger Harvard University

September 18, 2013

PIRSA:13090050

Not so random walks in cosmology

Ravi Sheth University of Pennsylvania
September 24, 2013

PIRSA:13090063
Astrophysics
I'll discuss a number of insights into the process of nonlinear structure formation which come from the study of random walks crossing a suitably chosen barrier. These derive from a number of new results about walks with correlated steps, and include a unified framework for the peaks and excursion set frameworks for estimating halo abundances, evolution and clustering, as well as nonlinear, nonlocal and stochastic halo bias, all of which matter for the next generation of large scale structure datasets.
13/14 PSI - Quantum Theory - Lecture 12

Joseph Emerson Institute for Quantum Computing (IQC)

September 24, 2013

PIRSA:13090045
13/14 PSI - Relativity - Lecture 12

Neil Turok University of Edinburgh

September 24, 2013

PIRSA:13090026
13/14 PSI - Quantum Theory - Lecture 11

Joseph Emerson Institute for Quantum Computing (IQC)

September 23, 2013

PIRSA:13090044
13/14 PSI - Relativity - Lecture 11

Neil Turok University of Edinburgh

September 23, 2013

PIRSA:13090025
13/14 PSI - Quantum Theory - Lecture 10

Joseph Emerson Institute for Quantum Computing (IQC)

September 20, 2013

PIRSA:13090041
13/14 PSI - Relativity - Lecture 10

Neil Turok University of Edinburgh

September 20, 2013

PIRSA:13090022
General Relativity for Cosmology - Lecture 2

Achim Kempf University of Waterloo

September 19, 2013

PIRSA:13090004
The World is Discrete

Olaf Dreyer Freelance Consultant
September 19, 2013

PIRSA:13090073
General Relativity & Quantum Cosmology
We argue that the scale-free spectrum that is observed in the cosmic microwave background is the result of a phase transition in the early universe. The observed tilt of the spectrum, which has been measured to be 0.04, is shown to be equal to the anomalous scaling dimension of the correlation function. The phase transition replaces inflation as the mechanism that produces this spectrum. The tilt further indicates that there is a fundamental small length scale in nature that we have not yet observed in any other way.
13/14 PSI - Quantum Theory - Lecture 9

Joseph Emerson Institute for Quantum Computing (IQC)

September 19, 2013

PIRSA:13090040
13/14 PSI - Relativity - Lecture 9

Neil Turok University of Edinburgh

September 19, 2013

PIRSA:13090021
Short Gamma-Ray Bursts and the Electromagnetic Counterparts of Gravitational Wave Sources

Edo Berger Harvard University

September 18, 2013

PIRSA:13090050

Gamma-ray bursts are the most luminous and energetic explosions known in the universe. They appear in two varieties: long- and short-duration. The long GRB result from the core-collapse of massive stars, but until recently the origin of the short GRBs was shrouded in mystery. In this talk I will present several lines of evidence that point to the merger of compact objects binaries (NS-NS and/or NS-BH) as the progenitor systems of short GRBs. Within this framework, the observational data also allow us to independently determine the merger rate of these systems as input to the Advanced LIGO event rate, to infer the merger distribution timescale, and to determine the energy scale of the mergers. In addition, using radio to X-ray observations of short GRBs we can determine the expected electromagnetic properties of Advanced LIGO sources.

Title	Date	Collection	Type	Info
Not so random walks in cosmology	2013‑09‑24	Cosmology and Gravitation	Scientific Series	View details
13/14 PSI - Quantum Theory - Lecture 12	2013‑09‑24	13/14 PSI - Quantum Theory	Course	View details
13/14 PSI - Relativity - Lecture 12	2013‑09‑24	13/14 PSI - Relativity	Course	View details
13/14 PSI - Quantum Theory - Lecture 11	2013‑09‑23	13/14 PSI - Quantum Theory	Course	View details
13/14 PSI - Relativity - Lecture 11	2013‑09‑23	13/14 PSI - Relativity	Course	View details
13/14 PSI - Quantum Theory - Lecture 10	2013‑09‑20	13/14 PSI - Quantum Theory	Course	View details
13/14 PSI - Relativity - Lecture 10	2013‑09‑20	13/14 PSI - Relativity	Course	View details
General Relativity for Cosmology - Lecture 2	2013‑09‑19	General Relativity for Cosmology - 2013	Course	View details
The World is Discrete	2013‑09‑19	Quantum Gravity	Scientific Series	View details
13/14 PSI - Quantum Theory - Lecture 9	2013‑09‑19	13/14 PSI - Quantum Theory	Course	View details
13/14 PSI - Relativity - Lecture 9	2013‑09‑19	13/14 PSI - Relativity	Course	View details
Short Gamma-Ray Bursts and the Electromagnetic Counterparts of Gravitational Wave Sources	2013‑09‑18	Colloquium	Scientific Series	View details

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Format results

Not so random walks in cosmology

13/14 PSI - Quantum Theory - Lecture 12

13/14 PSI - Relativity - Lecture 12

13/14 PSI - Quantum Theory - Lecture 11

13/14 PSI - Relativity - Lecture 11

13/14 PSI - Quantum Theory - Lecture 10

13/14 PSI - Relativity - Lecture 10

General Relativity for Cosmology - Lecture 2

The World is Discrete

13/14 PSI - Quantum Theory - Lecture 9

13/14 PSI - Relativity - Lecture 9

Short Gamma-Ray Bursts and the Electromagnetic Counterparts of Gravitational Wave Sources

Not so random walks in cosmology

13/14 PSI - Quantum Theory - Lecture 12

13/14 PSI - Relativity - Lecture 12

13/14 PSI - Quantum Theory - Lecture 11

13/14 PSI - Relativity - Lecture 11

13/14 PSI - Quantum Theory - Lecture 10

13/14 PSI - Relativity - Lecture 10

General Relativity for Cosmology - Lecture 2

The World is Discrete

13/14 PSI - Quantum Theory - Lecture 9

13/14 PSI - Relativity - Lecture 9

Short Gamma-Ray Bursts and the Electromagnetic Counterparts of Gravitational Wave Sources