Results 11 to 20 of about 3,086 (259)
Quantum causal influence [PDF]
Journal of High Energy Physics, 2019 Abstract We introduce a framework to study the emergence of time and causal structure in quantum many-body systems. In doing so, we consider quantum states which encode spacetime dynamics, and develop information theoretic tools to extract the causal relationships between putative spacetime subsystems.
Cotler, Jordan +3 more
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The “noncausal causality” of quantum information [PDF]
SSRN Electronic Journal, 2021 The paper is concentrated on the special changes of the conception of causalityfrom quantum mechanics to quantum information meaning as a background the revolution implemented by the former to classical physics and science after Max Born’s probabilistic reinterpretation of wave function.
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Quantum Information in Relativity: The Challenge of QFT Measurements
Entropy, 2021 Proposed quantum experiments in deep space will be able to explore quantum information issues in regimes where relativistic effects are important. In this essay, we argue that a proper extension of quantum information theory into the relativistic domain ...
Charis Anastopoulos, Ntina Savvidou
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Quantum Physics and God’s Agency [PDF]
پژوهشنامه فلسفه دین, 2022 The common understanding of Copenhagen interpretation of the uncertainty principle and indeterminism in quantum physics is that it is a negation of causal relationships.
Hamidreza Shakerin
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Gravitational causality and the self-stress of photons
Journal of High Energy Physics, 2022 We study causality in gravitational systems beyond the classical limit. Using on-shell methods, we consider the 1-loop corrections from charged particles to the photon energy-momentum tensor — the self-stress — that controls the quantum interaction ...
Brando Bellazzini +3 more
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Evolution in quantum causal histories [PDF]
Classical and Quantum Gravity, 2003 We provide a precise definition and analysis of quantum causal histories (QCH). A QCH consists of a discrete, locally finite, causal pre-spacetime with matrix algebras encoding the quantum structure at each event. The evolution of quantum states and observables is described by completely positive maps between the algebras at causally related events. We
Hawkins, Eli +2 more
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Quantum Bell inequalities from Information Causality – tight for Macroscopic Locality [PDF]
Quantum, 2022 In a Bell test, the set of observed probability distributions complying with the principle of local realism is fully characterized by Bell inequalities.
Mariami Gachechiladze +3 more
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Quantum causal graph dynamics [PDF]
Physical Review D, 2017 Consider a graph having quantum systems lying at each node. Suppose that the whole thing evolves in discrete time steps, according to a global, unitary causal operator. By causal we mean that information can only propagate at a bounded speed, with respect to the distance given by the graph.
Arrighi, Pablo, Martiel, Simon
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Causal Limit on Quantum Communication [PDF]
Physical Review Letters, 2019 The capacity of a channel is known to be equivalent to the highest rate at which it can generate entanglement. Analogous to entanglement, the notion of a causality measure characterises the temporal aspect of quantum correlations. Despite holding an equally fundamental role in physics, temporal quantum correlations have yet to find their operational ...
Pisarczyk, R. +4 more
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Quantum Information Causality [PDF]
Physical Review Letters, 2013 How much information can a transmitted physical system fundamentally communicate? We introduce the principle of quantum information causality, which states the maximum amount of quantum information that a quantum system can communicate as a function of its dimension, independently of any previously shared quantum physical resources.
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