Format results

37 talksCollection Number C04005
Talk

About SemiClassical Quantum Gravity
Alejandro Corichi National Autonomous University of Mexico
PIRSA:04100019 
Physical Ramifications of Quantum Geometry
John Baez University of California, Riverside
PIRSA:04100020 
The Problem of Dynamics in Quantum Gravity
John Baez University of California, Riverside
PIRSA:04100021 
Is a past finite order the inner basis of spacetime?
Rafael Sorkin Perimeter Institute for Theoretical Physics
PIRSA:04100022 
Statistical Aspects of SemiClassical Quantum Gravity
Luca Bombelli University of Mississippi
PIRSA:04100023 

Coarse Graining in Loop Quantization
Jose Zapata National Autonomous University of Mexico
PIRSA:04100025 
CACTUS as a Collaborative Tool for Discrete Quantum Gravity
David Rideout University of California, San Diego
PIRSA:04100026


Workshop on Reference Frames and Superselection Rules in Quantum Information Theory  2004
18 talksCollection Number C04002Talk

On the notion of Superselection Rule (SSR)
Domenico Giulini Leibniz University Hannover
PIRSA:04070000 

Quantizing and Dequantizing Reference Frames
Robert Spekkens Perimeter Institute for Theoretical Physics
PIRSA:04070002 
Quantum Reference Frames and Uncertainty
PIRSA:04070003 



On Alignment of Chiralities of Distant Frameworks
PIRSA:04070007


Workshop on Quantum Gravity in the Americas: Status and future directions  2004
37 talksCollection Number C04005The goal of the workshop is to bring together Quantum Gravity researchers working in the Americas to share their approaches and results, draw connections between research efforts, develop a broader perspective on the issues, focus on outstanding problems, foster an interactive community, and set objectives for future research. This workshop is a followingup of the workshop organized in January in Mexico. 
Workshop on Reference Frames and Superselection Rules in Quantum Information Theory  2004
18 talksCollection Number C04002Over the past five years, there has been much interest in a new kind of "unspeakable" quantum information which is to regular quantum information what a classical clock or gyroscope is to a classical message. While the latter is indifferent to the physical nature of the information carriers, the former requires the carrier to have a particular degree of freedom  a spatial orientation in the case of a gyroscope, or a natural oscillation in the case of a clock. Systems serving this purpose are referred to generically as reference frames, and constitute a quantifiable resource in quantum information theory. They play a central role in the tasks of direction and frame alignment, phase estimation, clock synchronization, and global positioning. The community has only just begun a systematic study of how this resource can be manipulated, quantified, and used optimally in both informationprocessing protocols and physical parameter estimation.