Talks

14725 - 14736 of 15863 Results

High Energy Neutrinos from the Sky and Through the Earth

Kate Scholberg Duke University

May 02, 2007
PIRSA:07050000
Cusp Anomaly, Integrability and ADS/CFT

Sergio Benvenuti Princeton University

May 01, 2007
PIRSA:07050001

Quantum Fields and Strings
A Hamiltonian framework for cosmological perturbations to any order

Bianca Dittrich Perimeter Institute for Theoretical Physics

May 01, 2007
PIRSA:07050019

Quantum Gravity
Advanced Topics in Cosmology 2B

Viatcheslav Mukhanov Ludwig-Maximilians-Universitiät München (LMU)

April 26, 2007
PIRSA:07040027
Advanced Topics in Cosmology

Viatcheslav Mukhanov Ludwig-Maximilians-Universitiät München (LMU)

April 26, 2007
PIRSA:07040024
Cryptographic Protocols in a Quantum World

Adam Brown Stanford University

April 25, 2007
PIRSA:07040029

Quantum Information
Challenges of Explaining Cosmic Acceleration Through Modified Gravity

April 25, 2007
PIRSA:07040011

Cosmology
Comments on Holographic QCD

Andrei Parnachev Stony Brook University

April 24, 2007
PIRSA:07040021

Quantum Fields and Strings
DARK ENERGY AS A CURVATURE EFFECT IN NON-LINEAR THORIES OF GRAVITATION

April 24, 2007
PIRSA:07040028

Cosmology
Advanced Topics in Cosmology 1B

Viatcheslav Mukhanov Ludwig-Maximilians-Universitiät München (LMU)

April 19, 2007
PIRSA:07040026
Advanced Topics in Cosmology

Viatcheslav Mukhanov Ludwig-Maximilians-Universitiät München (LMU)

April 19, 2007
PIRSA:07040023
Cellular cartographymapping protein transport in live cells using fluctuation spectroscopy

Paul Wiseman McGill University

April 18, 2007
PIRSA:07040002

High Energy Neutrinos from the Sky and Through the Earth

Kate Scholberg Duke University

May 02, 2007
PIRSA:07050000

The progress in neutrino physics over the past ten years has been tremendous: we have learned that neutrinos have mass and change flavor. I will pick out one of the threads of the story-- the measurement of flavor oscillation in neutrinos produced by cosmic ray showers in the atmosphere, and its confirmation in long distance beam experiments. I will present the history, the current state of knowledge, and how the next generation of high intensity beam experiments will address some of the remaining puzzles.
Cusp Anomaly, Integrability and ADS/CFT

Sergio Benvenuti Princeton University

May 01, 2007
PIRSA:07050001

Quantum Fields and Strings

TBA
A Hamiltonian framework for cosmological perturbations to any order

Bianca Dittrich Perimeter Institute for Theoretical Physics

May 01, 2007
PIRSA:07050019

Quantum Gravity

We introduce a framework that allows to calculate cosmological perturbations in a gauge invariant manner to any order. The two main features of this framework are to take physical observables as basic objects and to treat the variables describing the background geometry as fully dynamical. Backreaction effects can therefore naturally adressed. At the end I will mention applications to Loop Quantum Cosmology.
Advanced Topics in Cosmology 2B

Viatcheslav Mukhanov Ludwig-Maximilians-Universitiät München (LMU)

April 26, 2007
PIRSA:07040027

Class 2 part 2
Advanced Topics in Cosmology

Viatcheslav Mukhanov Ludwig-Maximilians-Universitiät München (LMU)

April 26, 2007
PIRSA:07040024

Class 2
Cryptographic Protocols in a Quantum World

Adam Brown Stanford University

April 25, 2007
PIRSA:07040029

Quantum Information

I will survey recent feasibility results on building multi-party cryptographic protocols which manipulate quantum data or are secure against quantum adversaries. The focus will be protocols for secure evaluation of quantum circuits. Along the way, I'll discuss how quantum machines can (and can't) prove knowledge of a secret to a distrustful partner. The talk is based on recent unpublished results, as well as older joint work with subsets of Michael Ben-Or, Claude Crepeau, Daniel Gottesman, and Avinatan Hasidim (STOC '02, FOCS '02, Eurocrypt '05, FOCS '06).
Challenges of Explaining Cosmic Acceleration Through Modified Gravity

April 25, 2007
PIRSA:07040011

Cosmology

Among the possible explanations for the observed acceleration of the universe, perhaps the boldest is the idea that new gravitational physics might be the culprit. In this colloquium I will discuss some of the challenges of constructing a sensible phenomenological extension of General Relativity, give examples of some candidate models of modified gravity and survey existing observational constraints on this approach. I will conclude by discussing how we might hope to distinguish between modifications of General Relativity and dark energy as competing hypotheses to explain cosmic acceleration.
Comments on Holographic QCD

Andrei Parnachev Stony Brook University

April 24, 2007
PIRSA:07040021

Quantum Fields and Strings

TBA
DARK ENERGY AS A CURVATURE EFFECT IN NON-LINEAR THORIES OF GRAVITATION

April 24, 2007
PIRSA:07040028

Cosmology

Dark matter and dark energy can be explained without resorting to exotic fields if one accepts that the geometry of spacetime is governed by suitable generalized gravitational theories based on Lagrangians that are non-linear in the curvature of a metric and/or a torsionless linear connection, i.e. in second order and first order formalisms. A convenient choice of nonquadratic Lagrangians can fit well most of the astrophysical, cosmological and solar system requirements imposed by experimental results, without drastic modifications of Einstein field equations and with FRW Cosmologies preserved as a good approximation of Nature at a global scale.
Advanced Topics in Cosmology 1B

Viatcheslav Mukhanov Ludwig-Maximilians-Universitiät München (LMU)

April 19, 2007
PIRSA:07040026

Class 1 part 2
Advanced Topics in Cosmology

Viatcheslav Mukhanov Ludwig-Maximilians-Universitiät München (LMU)

April 19, 2007
PIRSA:07040023

Class 1
Cellular cartographymapping protein transport in live cells using fluctuation spectroscopy

Paul Wiseman McGill University

April 18, 2007
PIRSA:07040002

tba

Title	Speaker(s)	Date	Collection	Type	Info
High Energy Neutrinos from the Sky and Through the Earth	Kate Scholberg	2007‑05‑02	Colloquium	Scientific Series	View details
Cusp Anomaly, Integrability and ADS/CFT	Sergio Benvenuti	2007‑05‑01	Quantum Fields and Strings	Scientific Series	View details
A Hamiltonian framework for cosmological perturbations to any order	Bianca Dittrich	2007‑05‑01	Cosmology and Gravitation	Scientific Series	View details
Advanced Topics in Cosmology 2B	Viatcheslav Mukhanov	2007‑04‑26	Advanced Topics in Cosmology mini-course 2007	Course	View details
Advanced Topics in Cosmology	Viatcheslav Mukhanov	2007‑04‑26	Advanced Topics in Cosmology mini-course 2007	Course	View details
Cryptographic Protocols in a Quantum World	Adam Brown	2007‑04‑25	Perimeter Institute Quantum Discussions	Scientific Series	View details
Challenges of Explaining Cosmic Acceleration Through Modified Gravity		2007‑04‑25	Colloquium	Scientific Series	View details
Comments on Holographic QCD	Andrei Parnachev	2007‑04‑24	Quantum Fields and Strings	Scientific Series	View details
DARK ENERGY AS A CURVATURE EFFECT IN NON-LINEAR THORIES OF GRAVITATION		2007‑04‑24	Cosmology and Gravitation	Scientific Series	View details
Advanced Topics in Cosmology 1B	Viatcheslav Mukhanov	2007‑04‑19	Advanced Topics in Cosmology mini-course 2007	Course	View details
Advanced Topics in Cosmology	Viatcheslav Mukhanov	2007‑04‑19	Advanced Topics in Cosmology mini-course 2007	Course	View details
Cellular cartographymapping protein transport in live cells using fluctuation spectroscopy	Paul Wiseman	2007‑04‑18	Colloquium	Scientific Series	View details

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