Format results
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Local scale invariance as an alternative to Lorentz invariance
Sean Gryb - University of Groningen
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Quantum information theory in curved spacetime
Maki Takahashi - University of Sydney
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A quantization quandary on the canonical road to quantum gravity
Karim Thebault - Ludwig-Maximilians-Universität München (LMU)
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Some thoughts about the wave function of the universe
Latham Boyle - University of Edinburgh
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The complementary contributions of free will, indeterminism and signalling to models of quantum correlations
Michael Hall - Physikalisch-Technische Bundesanstalt (PTB)
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Quantum non-locality: how much does it take to simulate quantum correlations?
Cyril Branciard - Université de Genève
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Quantum control in foundational experiments: what can we say?
Daniel Terno - Macquarie University
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Cosmological insight into fundamental physics
Tamara Davis The last decade of astrophysics has shown more than ever before that cosmology can teach us about the nuts-and-bolts of basic physics. This has been driven by the discovery of the accelerating universe (dark energy) --- the theories being proposed to explain dark energy often invoke new… -
Scale invariance, Weyl gravity, and Einstein's three objections
Basic epistemological considerations suggest that the laws of nature should be scale invariant and no fundamental length scale should exist in nature. Indeed, the standard model action contains only two terms that break scale invariance: the Einstein-Hilbert term and the Higgs mass term. We give a… -
Local scale invariance as an alternative to Lorentz invariance
Sean Gryb - University of Groningen
I will present a recent result showing that general relativity admits a dual description in terms of a 3D scale invariant theory. The dual theory was discovered by starting with the basic observation that, fundamentally, all observations can be broken down into local comparisons of spatial… -
Quantum limits for measurement of the metric tensor
Tony Downes The geometry of space-time can only be determined by making measurements on physical systems. The ultimate accuracy achievable is then determined by quantum mechanics which fundamentally governs these systems. In this talk I will describe uncertainty principles constraining how well we… -
Quantum information theory in curved spacetime
Maki Takahashi - University of Sydney
Maki Takahashi We present a formalism describing the transport of the quantum spin state of massive fermions in curved space-time for the purpose of studying relativistic quantum information phenomena such as entanglement and teleportation. We are concerned with answering the elementary question of… -
Protective Measurement and the Interpretation of the Wave Function
Shan Gao We investigate the validity of the field explanation of the wave function by analyzing the mass and charge density distributions of a quantum system. According to protective measurement, a charged quantum system has effective mass and charge density distributed in space, proportional to the… -
A quantization quandary on the canonical road to quantum gravity
Karim Thebault - Ludwig-Maximilians-Universität München (LMU)
Karim Thebault Canonical quantization techniques are generally considered to provide one of the most rigorous methodologies for passing from a classical to a quantum description of reality. For classical Hamiltonian systems with constraints a number of such techniques are available (i.e. gauge… -
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The complementary contributions of free will, indeterminism and signalling to models of quantum correlations
Michael Hall - Physikalisch-Technische Bundesanstalt (PTB)
To model statistical correlations that violate Bell inequalities (such as singlet state correlations), one must relax at least one of three physically plausible postulates: measurement independence (experimenters can freely choose measurement settings independently of any underlying variables… -
Quantum non-locality: how much does it take to simulate quantum correlations?
Cyril Branciard - Université de Genève
Quantum correlations cannot be given any classical explanation that would satisfy Bell's local causality assumption. This quite intriguing feature of quantum theory, known as quantum non-locality, has fascinated physicists for years, and has more recently been proven to have interesting applications… -
Quantum control in foundational experiments: what can we say?
Daniel Terno - Macquarie University
Wheeler's delayed choice (WDC) is one of the "standard experiments in foundations". It aims at the puzzle of a photon simultaneously behaving as wave and particle. Bohr-Einstein debate on wave-particle duality prompted the introduction of Bohr's principle of complementarity, ---`.. the study of… -
Action Duality: A Constructive Principle for Quantum Foundations
Ken Wharton An analysis of the path-integral approach to quantum theory motivates the hypothesis that two experiments with the same classical action should have dual ontological descriptions. If correct, this hypothesis would not only constrain realistic interpretations of quantum theory, but would…