Results 21 to 30 of about 6,568 (254)

QUANTUM THEOLOGY BEYOND COPENHAGEN: TAKING FUNDAMENTALISM LITERALLY

open access: yesZygon, 2023
Theological engagement with quantum physics has, to this day, been dominated by the Copenhagen interpretation. However, philosophers and physicists working in the “quantum foundations” field have largely abandoned the Copenhagen view on account of what ...
doaj   +2 more sources

Contextuality under weak assumptions

open access: yesNew Journal of Physics, 2017
The presence of contextuality in quantum theory was first highlighted by Bell, Kochen and Specker, who discovered that for quantum systems of three or more dimensions, measurements could not be viewed as deterministically revealing pre-existing ...
Andrew W Simmons   +4 more
doaj   +1 more source

Summoning, No-Signalling and Relativistic Bit Commitments

open access: yesEntropy, 2019
Summoning is a task between two parties, Alice and Bob, with distributed networks of agents in space-time. Bob gives Alice a random quantum state, known to him but not her, at some point. She is required to return the state at some later point, belonging
Adrian Kent
doaj   +1 more source

Experimental Predictions for Norm-Conserving Spontaneous Collapse

open access: yesEntropy, 2023
Previous work has shown that nonlocal collapse in quantum mechanics can be described by a deterministic, non-unitary operator added to the standard Schrödinger equation.
D. W. Snoke, D. N. Maienshein
doaj   +1 more source

Foundations of Quantum Approaches to Consciousness [PDF]

open access: yesJournal of Philosophical Investigations, 2021
As generally accepted, consciousness or mind and material brain are closely related to each other; but how? Quantum mechanics is a new pathway to understand the hard problem of consciousness and its relation to the brain.
Hamid Faghanpour Azizi   +2 more
doaj   +1 more source

Observer-dependent locality of quantum events

open access: yesNew Journal of Physics, 2018
In general relativity, the causal structure between events is dynamical, but it is definite and observer-independent; events are point-like and the membership of an event A in the future or past light-cone of an event B is an observer-independent ...
Philippe Allard Guérin, Časlav Brukner
doaj   +1 more source

Uncertainty Relation for Errors Focusing on General POVM Measurements with an Example of Two-State Quantum Systems

open access: yesEntropy, 2020
A novel uncertainty relation for errors of general quantum measurement is presented. The new relation, which is presented in geometric terms for maps representing measurement, is completely operational and can be related directly to tangible measurement ...
Jaeha Lee, Izumi Tsutsui
doaj   +1 more source

Planck-Scale Soccer-Ball Problem: A Case of Mistaken Identity

open access: yesEntropy, 2017
Over the last decade, it has been found that nonlinear laws of composition of momenta are predicted by some alternative approaches to “real” 4D quantum gravity, and by all formulations of dimensionally-reduced (3D) quantum gravity coupled to matter.
Giovanni Amelino-Camelia
doaj   +1 more source

Local Scale Covariance and Its Radical Implications for Cosmology

open access: yesGalaxies, 2021
Local scale covariance posits that no privileged length scales should appear in the fundamental equations of local, Minkowskian physics—why should nature have scale, but not position preferences?—yet, they clearly do.
Yehonatan Knoll
doaj   +1 more source

Comparing Singlet Testing Schemes

open access: yesEntropy
We compare schemes for testing whether two parties share a two-qubit singlet state. The first, standard, scheme tests Braunstein–Caves (or CHSH) inequalities, comparing the correlations of local measurements drawn from a fixed finite set against the ...
George Cowperthwaite, Adrian Kent
doaj   +1 more source

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