17881 - 17892 of 17898 Results
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Quantizing and Dequantizing Reference Frames
Robert Spekkens - Perimeter Institute for Theoretical Physics
Quantum Reference Frames and Relative States
Nicolas Gisin - Université de Genève
On the notion of Superselection Rule (SSR)
Domenico Giulini - Leibniz University Hannover
The Stability of the Solar System
Scott Tremaine - Institute for Advanced Study (IAS) - School of Natural Sciences (SNS)
Are You Ready to Live the "Quantum World"? A Debate on the Meaning of Quantum Theory
Antony Valentini - Clemson University , Lucien Hardy - Perimeter Institute for Theoretical Physics , Wayne Myrvold - Western University
Theory of Cosmological Perterbations - Lecture 4, Part 1
Robert Brandenberger - McGill University - Department of Physics
Theory of Cosmological Perterbations - Lecture 3, Part 1
Robert Brandenberger - McGill University - Department of Physics
The Art of Mathematics
Ellen Kaplan - Harvard University , Robert Kaplan - Harvard University
Challenges for Theories of Fundamental Physics from Cosmology - Part 2
Robert Brandenberger - McGill University - Department of Physics
Challenges for Theories of Fundamental Physics from Cosmology - Part 1
Robert Brandenberger - McGill University - Department of Physics
The Large Hadron Collider - World\'s Most Powerful Microscope
John Ellis - European Organization for Nuclear Research (CERN) , Robert Orr - University of Toronto
"International researchers at the Large Hadron Collider (LHC), in Geneva, Switzerland, will soon embark on one of science's greatest adventures. With its very high energy, previously seen only in cosmic rays, the particle collider will probe the inner structure of matter at distances ten times…
Phenomenology of Discrete Space: Possible Tests
Seth Major - Hamilton College
I will discuss possible tests of the grainularity of space including modified dispersion relations in the formation of white dwarfs and neutron stars and constraints on a stochastic direction field from atomic system tests.
Symmetry and global independence in classical and quantum theories
Ben Toner - Centrum Wiskunde & Informatica
Renner\'s global quantum de Finetti theorem establishes that if the state of a quantum system is invariant under permutations of its systems, then almost all of its subsystems are almost in the same state and independent of each other. Motivated by this result, we show that the most straightforward…
Gravitational collapse in quantum gravity
Viqar Husain - University of New Brunswick
I will describe work aimed at understanding the dynamics of gravitational collapse in a fully quantum setting. Its emphasis is on the role played by fundamental discreteness. The approach used suggests modifications of a black hole\'s mass loss rate and thermodynamical properties. Numerical…
Topological Quantum Computation: anyons, quantum symmetries and topological order
Sander Bais - Universiteit van Amsterdam
This will be an introductory talk about Topological Quantum Computation. TQC is attractive because it is intrinsicaly decoherence free. We introduce the basic notions, such as non abelian anyons, quantum symmetries and topological order. A topologically ordered phase is a gapped phase in which the…
Possible strategies for the search for quantum gravity induced effects
We investigate the abstract features of the abstract, and find an abstractly abstracted abstract. We investigate the abstract features of the abstract, and find an abstractly abstracted abstract. We investigate the abstract features of the abstract, and find an abstractly abstracted abstract. We…
Phenomenology of black holes in particle colliders and cosmic ray showers
Marco Cavaglia - University of Mississippi
If large extra dimensions exist, microscopic black holes may be created in TeV particle colliders and in Earth\'s atmosphere by the collisions of ultrahigh-energy cosmic rays with atmospheric nuclei. The decay of these black holes could soon be observed at the Large Hadron Collider or the Pierre…
Towards a Phenomenology of Quantum Gravity?
John Ellis - European Organization for Nuclear Research (CERN)
This talk will review proposed tests of ideas about quantum gravity, including searches for quantum decoherence, probes of the possible energy-dependence of the velocity of light, and the nature of vacuum energy. Motivations will be drawn from a non-critical string theory framework.
Out-of-this-World Physics: Probing Quantum Gravity in the Lab
Greg Landsberg - Brown University
I\'ll give a broad review of various ways of looking for large, small, and warped extra dimensions and will give only a brief review of the black-hole business, particularly an introduction based on the original paper we wrote and recent work on Randall-Sundrum black holes.
How well constrained is the primordial power spectrum?
I will discuss a new method of inflaton potential reconstruction that combines the flow formalism, which is a stochastic method of inflationary model generation, with an exact numerical calculation of the mode equations of quantum fluctuations. This technique allows one to explore regions of the…
Symmetry deformation from quantum relational observables
Florian Girelli - University of Waterloo
Observables in (quantum) General Relativity can be constructed from (quantum) reference frame -- a physical observable is then a relation between a system of interest and the reference frame. A possible interpretation of DSR can be derived from the notion of deformed reference frame (cf Liberati…