Talks

9529 - 9540 of 16763 Results

13/14 PSI - Quantum Gravity Review - Lecture 14

Bianca Dittrich Perimeter Institute for Theoretical Physics

March 07, 2014

PIRSA:14030021
Introduction to Effective Field Theories - Lecture 15

Cliff Burgess McMaster University

March 07, 2014

PIRSA:14020091
13/14 PSI - Beyond the Standard Model - Lecture 13

Robert Mann University of Waterloo

March 07, 2014

PIRSA:14030014
Introduction to Quantum Field Theory for Cosmology - Lecture 16

Achim Kempf University of Waterloo

March 06, 2014

PIRSA:14020007
13/14 PSI - Beyond the Standard Model - Lecture 12

Robert Mann University of Waterloo

March 06, 2014

PIRSA:14030013
A one-dimensional action for simplicial gravity in three dimensions

Wolfgang Wieland University of Erlangen-Nuremberg

March 06, 2014

PIRSA:14030088

Quantum Gravity
Sequestering Lorentz violation in the Lifshitz sector

Maxim Pospelov University of Minnesota

March 06, 2014

PIRSA:14030092

Strong Gravity
Instanton moduli spaces, intersection cohomology and W-algebras or is there a mathematically rigorous formulation of the AGT conjecture?

Alexander Braverman University of Toronto

March 06, 2014

PIRSA:14030099

Mathematical physics
13/14 PSI - Quantum Gravity Review - Lecture 13

Bianca Dittrich Perimeter Institute for Theoretical Physics

March 06, 2014

PIRSA:14030020
The Unreasonable Effectiveness Of Quantum Physics in Modern Mathematics

Robbert Dijkgraaf Institute for Advanced Study (IAS)

March 05, 2014

PIRSA:14030094
The Unreasonable Effectiveness Of Quantum Physics in Modern Mathematics

Robbert Dijkgraaf Institute for Advanced Study (IAS)

March 05, 2014

PIRSA:14030083

Mathematical physics
13/14 PSI - Quantum Information Review - Lecture 13

Andrew Childs University of Waterloo

March 05, 2014

PIRSA:14030026

13/14 PSI - Quantum Gravity Review - Lecture 14

Bianca Dittrich Perimeter Institute for Theoretical Physics

March 07, 2014

PIRSA:14030021
Introduction to Effective Field Theories - Lecture 15

Cliff Burgess McMaster University

March 07, 2014

PIRSA:14020091
13/14 PSI - Beyond the Standard Model - Lecture 13

Robert Mann University of Waterloo

March 07, 2014

PIRSA:14030014
Introduction to Quantum Field Theory for Cosmology - Lecture 16

Achim Kempf University of Waterloo

March 06, 2014

PIRSA:14020007
13/14 PSI - Beyond the Standard Model - Lecture 12

Robert Mann University of Waterloo

March 06, 2014

PIRSA:14030013
A one-dimensional action for simplicial gravity in three dimensions

Wolfgang Wieland University of Erlangen-Nuremberg

March 06, 2014

PIRSA:14030088

Quantum Gravity

Loop quantum gravity has a spinorial representation. Spinors simplify the symplectic structure of the theory, but can they also teach us something about the dynamics? We study this question in three dimensions, and derive the Ponzano–-Regge model from a spinorial action. Our construction starts from the first-order Palatini formalism, and gives the discretised action in the spinorial representation. A one-dimensional refinement limit brings us back to a continuum theory. The three-dimensional action turns into a line integral over the edges of the discretisation. We compute the gauge-fixed path integral for a generic simplicial discretisation. The resulting amplitudes reproduce the Ponzano–-Regge model.
Sequestering Lorentz violation in the Lifshitz sector

Maxim Pospelov University of Minnesota

March 06, 2014

PIRSA:14030092

Strong Gravity

Horava's proposal to use Lifshitz propagators for gravitons above certain energy scales may provide a viable theory of quantum gravity without further need of UV completion. In my talk, I will address the question of whether the complete lack of Lorentz invariance above a certain energy scale is a big problem for any realistic construction. I will argue that it is not, provided that the onset of Lifshitz scaling for gravitons occurs at momentum scale much lower than the Planck mass. I will also discuss consequences of combining Lifshitz gravity and supersymmetric matter sector.
Instanton moduli spaces, intersection cohomology and W-algebras or is there a mathematically rigorous formulation of the AGT conjecture?

Alexander Braverman University of Toronto

March 06, 2014

PIRSA:14030099

Mathematical physics
13/14 PSI - Quantum Gravity Review - Lecture 13

Bianca Dittrich Perimeter Institute for Theoretical Physics

March 06, 2014

PIRSA:14030020
The Unreasonable Effectiveness Of Quantum Physics in Modern Mathematics

Robbert Dijkgraaf Institute for Advanced Study (IAS)

March 05, 2014

PIRSA:14030094

Mathematics has proven to be "unreasonably effective" in understanding nature. The fundamental laws of physics can be captured in beautiful formulae. In this lecture I want to argue for the reverse effect: Nature is an important source of inspiration for mathematics, even of the purest kind. In recent years ideas from quantum field theory, elementary particles physics and string theory have completely transformed mathematics, leading to solutions of deep problems, suggesting new invariants in geometry and topology, and, perhaps most importantly, putting modern mathematical ideas in a `natural’ context.
The Unreasonable Effectiveness Of Quantum Physics in Modern Mathematics

Robbert Dijkgraaf Institute for Advanced Study (IAS)

March 05, 2014

PIRSA:14030083

Mathematical physics

Mathematics has proven to be "unreasonably effective" in understanding nature. The fundamental laws of physics can be captured in beautiful formulae. In this lecture I want to argue for the reverse effect: Nature is an important source of inspiration for mathematics, even of the purest kind. In recent years ideas from quantum field theory, elementary particles physics and string theory have completely transformed mathematics, leading to solutions of deep problems, suggesting new invariants in geometry and topology, and, perhaps most importantly, putting modern mathematical ideas in a `natural’ context.
13/14 PSI - Quantum Information Review - Lecture 13

Andrew Childs University of Waterloo

March 05, 2014

PIRSA:14030026

Title	Date	Collection	Type	Info
13/14 PSI - Quantum Gravity Review - Lecture 14	2014‑03‑07	13/14 PSI - Quantum Gravity Review	Course	View details
Introduction to Effective Field Theories - Lecture 15	2014‑03‑07	Introduction to Effective Field Theories	Course	View details
13/14 PSI - Beyond the Standard Model - Lecture 13	2014‑03‑07	13/14 PSI - Beyond the Standard Model	Course	View details
Introduction to Quantum Field Theory for Cosmology - Lecture 16	2014‑03‑06	Quantum Field Theory for Cosmology - 2014	Course	View details
13/14 PSI - Beyond the Standard Model - Lecture 12	2014‑03‑06	13/14 PSI - Beyond the Standard Model	Course	View details
A one-dimensional action for simplicial gravity in three dimensions	2014‑03‑06	Quantum Gravity	Scientific Series	View details
Sequestering Lorentz violation in the Lifshitz sector	2014‑03‑06	Strong Gravity	Scientific Series	View details
Instanton moduli spaces, intersection cohomology and W-algebras or is there a mathematically rigorous formulation of the AGT conjecture?	2014‑03‑06	Quantum Information	Scientific Series	View details
13/14 PSI - Quantum Gravity Review - Lecture 13	2014‑03‑06	13/14 PSI - Quantum Gravity Review	Course	View details
The Unreasonable Effectiveness Of Quantum Physics in Modern Mathematics	2014‑03‑05	Public Lecture Series	Public Lectures	View details
The Unreasonable Effectiveness Of Quantum Physics in Modern Mathematics	2014‑03‑05	Colloquium	Scientific Series	View details
13/14 PSI - Quantum Information Review - Lecture 13	2014‑03‑05	13/14 PSI - Quantum Information Review	Course	View details

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