Talks

11605 - 11616 of 18366 Results

Advanced Quantum Field Theory - Lecture 20

Cliff Burgess McMaster University

March 23, 2012

PIRSA:12030079

High Energy Physics
Coming of Age for Horava Gravity: from Renormalizability to Black Holes

Thomas Sotiriou University of Nottingham

March 22, 2012

PIRSA:12030085

General Relativity & Quantum Cosmology
Explorations in String Theory - Lecture 9

Pedro Vieira Perimeter Institute for Theoretical Physics

March 22, 2012

PIRSA:12030052

Condensed Matter
Explorations in Cosmology - Lecture 9

Louis Leblond Pennsylvania State University

Matthew Johnson York University

March 22, 2012

PIRSA:12030033

Astrophysics
Explorations in Quantum Information - Lecture 9

David Cory Institute for Quantum Computing (IQC)

March 22, 2012

PIRSA:12030014

Quantum Physics
Negative Quasi-Probability Representation is a Necessary Resource for Quantum Computation

Victor Veitch Institute for Quantum Computing (IQC)

March 21, 2012

PIRSA:12030117

Quantum Physics
Advanced General Relativity - Lecture 20

Eric Poisson University of Guelph

March 21, 2012

PIRSA:12030074
Mass gap, topological molecules, and strong gauge dynamics

Mithat Unsal San Francisco State University

March 21, 2012

PIRSA:12030113
Explorations in String Theory - Lecture 8

Pedro Vieira Perimeter Institute for Theoretical Physics

March 21, 2012

PIRSA:12030051

High Energy Physics
Explorations in Cosmology - Lecture 8

Louis Leblond Pennsylvania State University

Matthew Johnson York University

March 21, 2012

PIRSA:12030032

Astrophysics
Advanced General Relativity - Lecture 19

Eric Poisson University of Guelph

March 21, 2012

PIRSA:12030070
Lifshitz Solutions in String Theory

Ruth Gregory King's College London

March 20, 2012

PIRSA:12030093

High Energy Physics

Advanced Quantum Field Theory - Lecture 20

Cliff Burgess McMaster University

March 23, 2012

PIRSA:12030079

High Energy Physics
Coming of Age for Horava Gravity: from Renormalizability to Black Holes

Thomas Sotiriou University of Nottingham

March 22, 2012

PIRSA:12030085

General Relativity & Quantum Cosmology

After giving an overview of the basic features of Horava gravity, I will focus on the latest developments and argue that, at least for the most general and complete version of the theory, the infrared phenomenology is by now relatively well understood and pathologies have been tamed. This implies that time has come for the theory to face a new series of intriguing challenges, related to quantization, ultraviolet phenomenology, black holes and singularities etc. I will present some ideas and first results in some of these directions.
Explorations in String Theory - Lecture 9

Pedro Vieira Perimeter Institute for Theoretical Physics

March 22, 2012

PIRSA:12030052

Condensed Matter
Explorations in Cosmology - Lecture 9

Louis Leblond Pennsylvania State University

Matthew Johnson York University

March 22, 2012

PIRSA:12030033

Astrophysics
Explorations in Quantum Information - Lecture 9

David Cory Institute for Quantum Computing (IQC)

March 22, 2012

PIRSA:12030014

Quantum Physics
Negative Quasi-Probability Representation is a Necessary Resource for Quantum Computation

Victor Veitch Institute for Quantum Computing (IQC)

March 21, 2012

PIRSA:12030117

Quantum Physics

Abstract The magic state model of quantum computation gives a recipe for universal quantum computation using perfect Clifford operations and repeat preparations of a noisy ancilla state. It is an open problem to determine which ancilla states enable universal quantum computation in this model. Here we show that for systems of odd dimension a necessary condition for a state to enable universal quantum computation is that it have negative representation in a particular quasi-probability representation which is a discrete analogue to the Wigner function. This condition implies the existence of a large class of bound states for magic state distillation: states which cannot be prepared using Clifford operations but do not enable universal quantum computation.
Advanced General Relativity - Lecture 20

Eric Poisson University of Guelph

March 21, 2012

PIRSA:12030074
Mass gap, topological molecules, and strong gauge dynamics

Mithat Unsal San Francisco State University

March 21, 2012

PIRSA:12030113

Mass, a concept familiar to all of us, is also one of the deepest
mysteries in nature. Almost all of the mass in the visible universe,
you, me and any other stuff that we see around us, emerges from a
quantum field theory, called QCD, which has a completely negligible
microscopic mass content. How does QCD and the family of gauge
theories it belongs to generate a mass?

This class of non-perturbative problems remained largely elusive despite much
effort over the years. Recently, new ideas based on compactification have been
shown useful to address some of these. Two such inter-related ideas are circle
compactifications, which avoid phase transitions and large-N volume
independence. Through the first one, we realized the existence of a
large-class of "topological molecules", e.g. magnetic bions, which
generate mass gap in a class of compactified gauge theories. The inception of the
second, the idea of large-N volume independence is old. The new
progress is the realization of its first working examples. This property allows us to
map a four dimensional gauge theory (including pure Yang-Mills) to a quantum mechanics at large-N.
Explorations in String Theory - Lecture 8

Pedro Vieira Perimeter Institute for Theoretical Physics

March 21, 2012

PIRSA:12030051

High Energy Physics
Explorations in Cosmology - Lecture 8

Louis Leblond Pennsylvania State University

Matthew Johnson York University

March 21, 2012

PIRSA:12030032

Astrophysics
Advanced General Relativity - Lecture 19

Eric Poisson University of Guelph

March 21, 2012

PIRSA:12030070
Lifshitz Solutions in String Theory

Ruth Gregory King's College London

March 20, 2012

PIRSA:12030093

High Energy Physics

I'll discuss solutions with Lifshitz scaling within string supergravity for an arbitrary scaling component z. After showing how to get exact Lifshitz spacetimes, I'll then look at more general solutions, including black holes and flows between Lifshitz and adS spacetimes.

Title	Date	Collection	Type	Info
Advanced Quantum Field Theory - Lecture 20	2012‑03‑23	Advanced Quantum Field Theory	Course	View details
Coming of Age for Horava Gravity: from Renormalizability to Black Holes	2012‑03‑22	Strong Gravity	Scientific Series	View details
Explorations in String Theory - Lecture 9	2012‑03‑22	11/12 PSI - Explorations in String Theory	Course	View details
Explorations in Cosmology - Lecture 9	2012‑03‑22	11/12 PSI - Explorations in Cosmology	Course	View details
Explorations in Quantum Information - Lecture 9	2012‑03‑22	11/12 PSI - Explorations in Quantum Information	Course	View details
Negative Quasi-Probability Representation is a Necessary Resource for Quantum Computation	2012‑03‑21	Perimeter Institute Quantum Discussions	Scientific Series	View details
Advanced General Relativity - Lecture 20	2012‑03‑21	Advanced General Relativity	Course	View details
Mass gap, topological molecules, and strong gauge dynamics	2012‑03‑21	Colloquium	Scientific Series	View details
Explorations in String Theory - Lecture 8	2012‑03‑21	11/12 PSI - Explorations in String Theory	Course	View details
Explorations in Cosmology - Lecture 8	2012‑03‑21	11/12 PSI - Explorations in Cosmology	Course	View details
Advanced General Relativity - Lecture 19	2012‑03‑21	Advanced General Relativity	Course	View details
Lifshitz Solutions in String Theory	2012‑03‑20	Quantum Fields and Strings	Scientific Series	View details

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Format results

Advanced Quantum Field Theory - Lecture 20

Coming of Age for Horava Gravity: from Renormalizability to Black Holes

Explorations in String Theory - Lecture 9

Explorations in Cosmology - Lecture 9

Explorations in Quantum Information - Lecture 9

Negative Quasi-Probability Representation is a Necessary Resource for Quantum Computation

Advanced General Relativity - Lecture 20

Mass gap, topological molecules, and strong gauge dynamics

Explorations in String Theory - Lecture 8

Explorations in Cosmology - Lecture 8

Advanced General Relativity - Lecture 19

Lifshitz Solutions in String Theory

Advanced Quantum Field Theory - Lecture 20

Coming of Age for Horava Gravity: from Renormalizability to Black Holes

Explorations in String Theory - Lecture 9

Explorations in Cosmology - Lecture 9

Explorations in Quantum Information - Lecture 9

Negative Quasi-Probability Representation is a Necessary Resource for Quantum Computation

Advanced General Relativity - Lecture 20

Mass gap, topological molecules, and strong gauge dynamics

Explorations in String Theory - Lecture 8

Explorations in Cosmology - Lecture 8

Advanced General Relativity - Lecture 19

Lifshitz Solutions in String Theory