Results 31 to 40 of about 3,086 (259)

Effects of Spatial Nonlocality versus Nonlocal Causality for Bound Electrons in External Fields

open access: yesEntropy, 2022
Using numerically exact solution of the time-dependent Schrödinger equation together with time-dependent quantum Monte Carlo (TDQMC) calculations, here we compare the effects of spatial nonlocality versus nonlocal causality for the ground state and for ...
Ivan P. Christov
doaj   +1 more source

Quantum space-time marginal problem: global causal structure from local causal information

open access: yesNew Journal of Physics, 2023
Spatial and temporal quantum correlations can be unified in the framework of the pseudo-density operators (PDOs), and quantum causality between the involved events in an experiment is encoded in the corresponding PDO.
Zhian Jia   +2 more
doaj   +1 more source

The simplest causal inequalities and their violation

open access: yesNew Journal of Physics, 2015
In a scenario where two parties share, act on and exchange some physical resource, the assumption that the parties’ actions are ordered according to a definite causal structure yields constraints on the possible correlations that can be established.
Cyril Branciard   +4 more
doaj   +1 more source

Kantian Causality and Quantum Quarks: The Compatibility between Quantum Mechanics and Kant’s Phenomenal World

open access: yesTheoria, 2013
Quantum indeterminism seems incompatible with Kant’s defense of causality in his Second Analogy. The Copenhagen interpretation also takes quantum theory as evidence for anti-realism.
Stephen R Palmquist
doaj   +1 more source

Quantum causal modelling

open access: yesNew Journal of Physics, 2016
Causal modelling provides a powerful set of tools for identifying causal structure from observed correlations. It is well known that such techniques fail for quantum systems, unless one introduces ‘spooky’ hidden mechanisms.
Fabio Costa, Sally Shrapnel
doaj   +1 more source

Finitary Spacetime Sheaves of Quantum Causal Sets: Curving Quantum Causality

open access: yesInternational Journal of Theoretical Physics, 2001
A locally finite, causal and quantal substitute for a locally Minkowskian principal fiber bundle $\cal{P}$ of modules of Cartan differential forms $\omg$ over a bounded region $X$ of a curved $C^{\infty}$-smooth differential manifold spacetime $M$ with structure group ${\bf G}$ that of orthochronous Lorentz transformations $L^{+}:=SO(1,3)^{\uparrow ...
Mallios, A., Raptis, I.
openaire   +4 more sources

On Quantum Causality

open access: yesVestnik of Saint Petersburg University. Philosophy and Conflict Studies, 2023
For Kant causality is an a priori category of the understanding, a necessary condition for the possibility of any experience. Later Wittgenstein’s philosophy rejects transcendentalism. We can only speak of causes and effects if in some basic situations, or ‘language games’, we already treat some things as causes of what happens.
openaire   +1 more source

Dynamics of Quantum Causal Structures [PDF]

open access: yesPhysical Review X, 2018
13+5 pages, 4 figures. Two appendices added.
Castro-Ruiz, E.   +2 more
openaire   +4 more sources

Experimental Connection between the Instrumental and Bell Inequalities

open access: yesProceedings, 2019
An investigated process can be studied in terms of the causal relations among the involved variables, representing it as a causal model. Some causal models are particularly relevant, since they can be tested through mathematical constraints between the ...
Iris Agresti   +5 more
doaj   +1 more source

Causal Asymmetry in a Quantum World [PDF]

open access: yesPhysical Review X, 2018
Causal asymmetry is one of the great surprises in predictive modelling: the memory required to predict the future differs from the memory required to retrodict the past. There is a privileged temporal direction for modelling a stochastic process where memory costs are minimal. Models operating in the other direction incur an unavoidable memory overhead.
Thompson, Jayne   +5 more
openaire   +7 more sources

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