Talks

9541 - 9552 of 18375 Results

Overview of the theory of spin glasses and its applications to quantum codes

Hidetoshi Nishimori Tokyo Institute of Technology

July 14, 2014

PIRSA:14070001
An introduction to quantum LDPC code

David Poulin Université de Sherbrooke

July 14, 2014

PIRSA:14070000
TBA

Cliff Burgess McMaster University

July 09, 2014

PIRSA:14070022
TBA

July 08, 2014

PIRSA:14070018

Condensed Matter
EinsteinPlus 2014 - Cosmology Keynote

Matthew Johnson York University

July 08, 2014

PIRSA:14070020
Numerical investigations of singularities in general relativity

David Garfinkle Oakland University

June 26, 2014

PIRSA:14060052

Astrophysics
On Quantum Tunnelling

Neil Turok University of Edinburgh

June 25, 2014

PIRSA:14060051

Astrophysics
PSI Ceremony 2014

John Berlinsky McMaster University

James Forrest University of Waterloo

June 21, 2014

PIRSA:14060054
Free Discussion

June 19, 2014

PIRSA:14060038
Summary

Derek Jackson Kimball California State University, East Bay

June 19, 2014

PIRSA:14060037
Gravity, an unexpected journey: from thermodynamics to emergent gravity, Lorentz breaking and back...

Stefano Liberati SISSA International School for Advanced Studies

June 19, 2014

PIRSA:14060002

General Relativity & Quantum Cosmology
Probing the electron-proton mass ratio variation with AMO systems

Robin Cote University of Connecticut

June 19, 2014

PIRSA:14060050

Overview of the theory of spin glasses and its applications to quantum codes

Hidetoshi Nishimori Tokyo Institute of Technology

July 14, 2014

PIRSA:14070001

I will review the theory of spin glasses with an emphasis on gauge symmetry. A number of exact results will be shown to be derived, some of which are useful to discuss the properties of quantum LDPC codes. Also will be explained is the combination of gauge symmetry, replica method, and duality argument to predict the precise location of a multicritical point, which is equivalent to the error-tolerance limit of toric code.
An introduction to quantum LDPC code

David Poulin Université de Sherbrooke

July 14, 2014

PIRSA:14070000

In this talk, I will cover some basic notions of quantum LDPC codes, focusing on the similarities and distinctions with their classical cousins. Topics will include definitions of stabilizer quantum LDPC codes (CSS and general), iterative decoding algorithms, dual spin models, and obstructions caused by error degeneracy. The talk will be informal and a good occasion to ask questions.
TBA

Cliff Burgess McMaster University

July 09, 2014

PIRSA:14070022
TBA

July 08, 2014

PIRSA:14070018

Condensed Matter
EinsteinPlus 2014 - Cosmology Keynote

Matthew Johnson York University

July 08, 2014

PIRSA:14070020
Numerical investigations of singularities in general relativity

David Garfinkle Oakland University

June 26, 2014

PIRSA:14060052

Astrophysics

The singularity theorems of general relativity tell us that spacetime singularities form in gravitational collapse, but tell us very little about the precise nature of these singularities. More information can be found using analytic approximations and numerical simulations. It is conjectured that inside black holes are two types of singularities: one that is spacelike, local, and oscillatory, and the other that is null and weak. This talk will review what numerical simulations of singularities have been done and the extent to which the above conjecture has been verified by the simulations.
On Quantum Tunnelling

Neil Turok University of Edinburgh

June 25, 2014

PIRSA:14060051

Astrophysics

One of the most basic but intriguing properties of quantum systems is their ability to `tunnel' between configurations which are classically disconnected. That is, processes which are classically impossible, are quantum allowed. In this talk I will outline a new, first-principles approach combining the semiclassical approximation with the concepts of post-selection and weak measurement. Its main virtue is to provide a real-time description within which sharp answers can be given to questions such as 'how long did the tunneling take' and 'where was the particle while it was tunneling?' Potential applications span a vast range, from laboratory tests to understanding black hole evaporation, the stability of the electroweak Higgs vacuum and the future of our universe, and the validity (or otherwise) of the "inflationary multiverse" scenario.
PSI Ceremony 2014

John Berlinsky McMaster University

James Forrest University of Waterloo

June 21, 2014

PIRSA:14060054
Free Discussion

June 19, 2014

PIRSA:14060038
Summary

Derek Jackson Kimball California State University, East Bay

June 19, 2014

PIRSA:14060037
Gravity, an unexpected journey: from thermodynamics to emergent gravity, Lorentz breaking and back...

Stefano Liberati SISSA International School for Advanced Studies

June 19, 2014

PIRSA:14060002

General Relativity & Quantum Cosmology

Thermodynamical aspects of gravity have been a tantalising puzzle for more than forty years now and are still at the center of much activity in semiclassical and quantum gravity. We shall explore the possibility that they might hint toward an emergent nature of gravity exploring the possible implications of such hypothesis. Among these we shall focus on the possibility that Lorentz invariance might be only a low energy/emergent feature by discussing viable theoretical frameworks, present constraints and open issues which make this path problematic. In the end we shall focus on black hole thermodynamics in Lorentz breaking gravity by presenting some recent results that seems to hint towards a surprising resilience of thermodynamics aspect of gravity even in these scenarios.
Probing the electron-proton mass ratio variation with AMO systems

Robin Cote University of Connecticut

June 19, 2014

PIRSA:14060050

Title	Date	Collection	Type	Info
Overview of the theory of spin glasses and its applications to quantum codes	2014‑07‑14	International Workshop on Quantum LDPC Codes	Conference	View details
An introduction to quantum LDPC code	2014‑07‑14	International Workshop on Quantum LDPC Codes	Conference	View details
TBA	2014‑07‑09	EinsteinPlus 2014		View details
TBA	2014‑07‑08	Quantum Matter	Scientific Series	View details
EinsteinPlus 2014 - Cosmology Keynote	2014‑07‑08	EinsteinPlus 2014		View details
Numerical investigations of singularities in general relativity	2014‑06‑26	Cosmology and Gravitation	Scientific Series	View details
On Quantum Tunnelling	2014‑06‑25	Colloquium	Scientific Series	View details
PSI Ceremony 2014	2014‑06‑21		Other	View details
Free Discussion	2014‑06‑19	New ideas in low-energy tests of fundamental physics	Conference	View details
Summary	2014‑06‑19	New ideas in low-energy tests of fundamental physics	Conference	View details
Gravity, an unexpected journey: from thermodynamics to emergent gravity, Lorentz breaking and back...	2014‑06‑19	Quantum Gravity	Scientific Series	View details
Probing the electron-proton mass ratio variation with AMO systems	2014‑06‑19	New ideas in low-energy tests of fundamental physics	Other	View details

Supported by

Format results

Overview of the theory of spin glasses and its applications to quantum codes

An introduction to quantum LDPC code

TBA

TBA

EinsteinPlus 2014 - Cosmology Keynote

Numerical investigations of singularities in general relativity

On Quantum Tunnelling

PSI Ceremony 2014

Free Discussion

Summary

Gravity, an unexpected journey: from thermodynamics to emergent gravity, Lorentz breaking and back...

Probing the electron-proton mass ratio variation with AMO systems

Overview of the theory of spin glasses and its applications to quantum codes

An introduction to quantum LDPC code

TBA

TBA

EinsteinPlus 2014 - Cosmology Keynote

Numerical investigations of singularities in general relativity

On Quantum Tunnelling

PSI Ceremony 2014

Free Discussion

Summary

Gravity, an unexpected journey: from thermodynamics to emergent gravity, Lorentz breaking and back...

Probing the electron-proton mass ratio variation with AMO systems