Format results
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Indefinite causal order in quantum mechanics
Časlav Brukner - Austrian Academy of Sciences
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Agency, causal structure and locality in Qbism
Ruediger Schack - University of London
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Towards an information-theoretic foundation of (quantum) thermodynamics
Giulio Chiribella - University of Hong Kong (HKU)
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The second laws of quantum thermodynamics
Jonathan Oppenheim - University College London
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Entropy, majorization, and thermodynamics in general probabilistic theories.
Howard Barnum - University of New Mexico
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Limitations of statistical mechanics for quantum thermodynamics.
David Jennings - Imperial College London
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Information and the architecture of quantum theory
Philipp Hoehn - Okinawa Institute of Science and Technology Graduate University
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Quantum theory and spacetime: allies, not enemies
Markus Müller - Austrian Academy of Sciences
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Bringing General Relativity into the Operational Probabilistic Framework
Lucien Hardy - Perimeter Institute for Theoretical Physics
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Nonclassicality as the failure of noncontextuality
Robert Spekkens - Perimeter Institute for Theoretical Physics
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Quantum mechanics from first principles
Lee Smolin - Perimeter Institute for Theoretical Physics
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Indefinite causal order in quantum mechanics
Časlav Brukner - Austrian Academy of Sciences
PIRSA:15050071 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationOne of the most deeply rooted concepts in science is causality: the idea that events in the present are caused by events in the past and, in turn, act as causes for what happens in the future. If an event A is a cause of an effect B, then B cannot be a cause of A. Recently we proposed a framework… -
Agency, causal structure and locality in Qbism
Ruediger Schack - University of London
PIRSA:15050074 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationIn QBism, a quantum state represents an agent's personal degrees of belief regarding the consequences of her actions on any part of her external world. The quantum formalism provides consistency criteria that enable the agent to make better decisions. QBism thus gives a central role to the agent, or… -
Towards an information-theoretic foundation of (quantum) thermodynamics
Giulio Chiribella - University of Hong Kong (HKU)
PIRSA:15050072 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationIn the classical world of Newton and Laplace, fundamental physics and thermodynamics do not blend well: the former puts forward a picture of nature where states are pure and processes are fundamentally reversible, while the latter deals with scenarios where states are mixed and processes are… -
The second laws of quantum thermodynamics
Jonathan Oppenheim - University College London
PIRSA:15050099 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum Information -
Entropy, majorization, and thermodynamics in general probabilistic theories.
Howard Barnum - University of New Mexico
PIRSA:15050073 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationMuch progress has recently been made on the fine-grained thermodynamics and statistical mechanics of microscopic physical systems, by conceiving of thermodynamics as a resource theory: one which governs which transitions between states are possible using specified "thermodynamic" (e.g. adiabatic or… -
Limitations of statistical mechanics for quantum thermodynamics.
David Jennings - Imperial College London
PIRSA:15050076 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationHow should we describe the thermodynamics of extreme quantum regimes, where features such as coherence and entanglement dominate? I will discuss possible limitations of a traditional statistical mechanics approach, and then describe work that applies modern techniques from the theory of quantum… -
Information and the architecture of quantum theory
Philipp Hoehn - Okinawa Institute of Science and Technology Graduate University
PIRSA:15050079 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationI will argue that, apart from their ever growing number of applications to physics, information theoretic concepts also offer a novel perspective on the physical content and architecture of quantum theory and spacetime. As a concrete example, I will discuss how one can derive and understand the… -
Quantum theory and spacetime: allies, not enemies
Markus Müller - Austrian Academy of Sciences
PIRSA:15050078 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationIt has become conventional wisdom to say that quantum theory and gravitational physics are conceptually so different, if not incompatible, that it is very hard to unify them. However, in the talk I will argue that the operational view of (quantum) information theory adds a very different twist to… -
Bringing General Relativity into the Operational Probabilistic Framework
Lucien Hardy - Perimeter Institute for Theoretical Physics
PIRSA:15050080 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationI will discuss my work (in progress) to formulate General Relativity as an operational theory which includes probabilities and also agency (knob settings). The first step is to find a way to discuss operational elements of GR. For this I adapt an approach due to Westman and Sonego. I assert that all… -
Nonclassicality as the failure of noncontextuality
Robert Spekkens - Perimeter Institute for Theoretical Physics
PIRSA:15050081 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationTo make precise the sense in which nature fails to respect classical physics, one requires a formal notion of "classicality". Ideally, such a notion should be defined operationally, so that it can be subjected to a direct experimental test, and it should be applicable in a wide variety of… -
Quantum mechanics from first principles
Lee Smolin - Perimeter Institute for Theoretical Physics
PIRSA:15050087 Conference Mathematical physics Quantum Foundations Quantum Gravity Quantum InformationQuantum mechanics is derived from the principle that the universe contain as much variety as possible, in the sense of maximizing the distinctiveness of each subsystem. This is an expression of Leibniz's principles of sufficient reason and the identity of the indiscernible. The quantum state of a…