Joseph's Group
Joseph Emerson - Institute for Quantum Computing (IQC)
17869 - 17880 of 17907 Results
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Relative localisation in quantum mechanics
Terry Rudolph - Imperial College London
Electronic coherence and electronic coherent states
Barry Sanders - University of Calgary
Quantum Nonlocality in the presence of Superselection Rules
Frank Saueressig - Radboud Universiteit Nijmegen
The problem of time and evolving constants of motion: the cosmological case
Saeed Rastgoo - University of Alberta
I present a cosmological toy model of the resolution of the problem of time based on the Page-Wootters formalism but written in terms of evolving constants of motion. The use of these quantities resolves the issues, e.g., the incorrect propagators, etc., of the Page-Wootters formalism, and points to…
No time machine on the cheap: why semiclassical wormholes won’t do
Daniel Terno - Macquarie Univerisry
If you can control a wormhole, you can time-travel. The issue is whether they can exist at all. Wormhole solutions in general relativity have spectacular local and global features. Invariantly, a wormhole throat is an outer marginally trapped surface satisfying additional constraints. Some of its…
Quantum Physics needs Philosophy, but shouldn't trust it
Slavoj Žižek - University of Ljubljana
Lee Smolin is fully aware that quantum physics has deep philosophical implications (about the nature of reality, time and space, observation, etc.). However, when philosophers engage in quantum theories, they often succumb to idealist temptations (consciousness creates reality, etc.). My aim as a…
Q&A/Panel Discussion: Perspectives on Time and Quantum Gravity
Fay Dowker - Imperial College London , Madhavan Varadarajan - Raman Research Institute , Renate Loll - Radboud Universiteit Nijmegen , Tim Koslowski - Technical University of Applied Sciences Würzburg-Schweinfurt
It Feels Like the Old Days: From Loop Quantum Gravity to Conformal Graphs
Tim Koslowski - Technical University of Applied Sciences Würzburg-Schweinfurt
Being, Becoming and Experience in Quantum Gravity
Fay Dowker - Imperial College London
In causal set quantum gravity, spacetime is Being and the process of the birth of the atoms of spacetime is Becoming. This process coordinates with our experience of the passage of time.
Three for Lee
Madhavan Varadarajan - Raman Research Institute
I will present three results: 1. Violation of positivity of energy in the extension of classical General Relativity provided by Ashtekar's polynomial formulation by virtue of its admittance of initial data with degenerate (densitized) triads. 2. Consistency of Propagation in the sense articulated by…
Battle of the Big Bang: The New Tales of Our Cosmic Origins
Niayesh Afshordi - University of Waterloo & Perimeter Institute
Title Battle of the Big Bang: The New Tales of Our Cosmic Origins Abstract The story of the universe’s origins is one of the greatest mysteries in science. From the explosive birth of the cosmos to the enigmatic nature of time and space, we are continually challenged by paradoxes that defy current…