15721 - 15732 of 17907 Results
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Newcomb\'s problem and Bell\'s theorem
Eric Cavalcanti - Griffith University
Chance and Romance: a marriage of classical and quantum probability
Jenann Ismael - Columbia University
Time-Energy Uncertainty and short-time Nonequilirium Thermodynamics
Noam Erez - Weizmann Institute of Science
The three - slit experiment
Urbasi Sinha - Raman Research Institute
On the time-energy uncertainty relation
Jos Uffink - Utrecht University
Exotic Phases and Phase Transitions from Geometrical Frustration
Ashvin Vishwanath - Harvard University
Relativistic Quantum State Evolution: Narratability and Relativity
Wayne Myrvold - Western University
Clocks at the Big Bang? Quantum gravity is not what you think!
Roger Penrose - University of Oxford
Electromagnetic self-force as a cosmic censor
Eric Poisson - University of Guelph
Hubeny identified a scenario in which a charged particle falling toward a near-extreme Reissner-Nordstrom black hole can penetrate the black hole and drive it beyond the extremal limit, thereby giving rise to an apparent violation of cosmic censorship. A version of this scenario, relevant to a Kerr…
Loop calculations in Superconformal Chern-Simons
Joseph Minahan - Uppsala University
We discuss the calculation of higher loop contributions to the anomalous dimensions of operators in N=6 Superconformal Chern-Simons theories. These lead us to conjecture the form of an interpolating function of the 't Hooft coupling that is not determined by integrability.
Vectors and affine forms, straight and twisted
PierGianLuca Porta Mana - Western Norway University of Applied Sciences
This is a geometric tutorial about straight and twisted vectors and forms (ie, de Rham currents) leading to some wild thoughts about the EM field as a *thing*, ie with properties similar to a piece of matter; and to some even wilder thoughts about a metric-free GR.
Phenomenological aspects of emergent phenomena
Mohamed Anber - University of Toronto
Recently, emergent phenomena have started to attract more attention. Instead of assuming a symmetric world, one begins with a chaotic one. In this talk, I will describe this picture, discuss the main constraints on emergence, and then present a few phenomenological procedures that can be implemented…
Under what conditions quantum systems thermalize?
Arnau Riera - Qilimanjaro Quantum Tech
This talk presents sufficient conditions for equilibration and thermalization of subsystems within closed many body quantum systems. That is, we identify when the local properties of the equilibrium state resemble those of a thermal state. With this aim, the recent progress in this field is reviewed…
The smallest possible thermal machines and the foundations of thermodynamics
Sandu Popescu - University of Bristol
In my talk I raise the question of the fundamental limits to the size of thermal machines - refrigerators, heat pumps and work producing engines - and I will present the smallest possible ones. I will also discuss the issue of a possible complementarity between size and efficiency and show that even…
Part 2: Reformulating and reconstructing quantum theory
Lucien Hardy - Perimeter Institute for Theoretical Physics
I provide a reformulation of finite dimensional quantum theory in the circuit framework in terms of mathematical axioms, and a reconstruction of quantum theory from operational postulates. The mathematical axioms for quantum theory are the following: [Axiom 1] Operations correspond to operators.…
Quantum Conditional States, Bayes Rule and Quantum Pooling
Matthew Leifer - Chapman University
Quantum theory can be thought of a noncommutative generalization of classical probability and, from this perspective, it is puzzling that no quantum generalization of conditional probability is in widespread use. In this talk, I discuss one such generalization and show how it can unify the…
Local states and channels in causal theories
Paolo Perinotti - University of Pavia
We will analyze different aspects of locality in causal operational probabilistic theories. We will first discuss the notion of local state and local objective information in operational probabilistic theories, and define an operational notion of discord that coincides with quantum discord in the…
Maximizing the scientific return from cosmic non-Gaussianity
Chris Byrnes - Bielefeld University
The model of local non-Gaussianity, parameterized by the constant non-linearity parameter fNL, is an extremely popular description of non-Gaussianity. However, a mild scale-dependence of fNL is natural. This scale dependence is a new observable, potentially detectable with the Planck satellite…
Holography for non-relativistic theories
I will discuss the construction of a holographic dictionary for theories with non-relativistic conformal symmetry, relating the field theory to the dual spacetime. I will focus on the case of Lifshitz spacetimes, giving a definition of asymptotically locally Lifshitz spacetimes and discussing the…
Data tables, dimension witnesses, and QKD
Nicolas Brunner - University of Bristol
We address the problem of testing the dimensionality of classical and quantum systems in a âÂÂblack-boxâ scenario. Imagine two uncharacterized devices. The first one allows an experimentalist to prepare a physical system in various ways. The second one allows the experimentalist to perform…