Results 31 to 40 of about 6,445 (252)

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

Environment-Assisted Invariance Does Not Necessitate Born’s Rule for Quantum Measurement

open access: yesEntropy, 2023
The argument of environment-assisted invariance (known as envariance) implying Born’s rule is widely used in models for quantum measurement to reason that they must yield the correct statistics, specifically for linear models.
Lotte Mertens, Jasper van Wezel
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

A Generic Model for Quantum Measurements

open access: yesEntropy, 2019
In previous articles, we presented a derivation of Born’s rule and unitary transforms in Quantum Mechanics (QM), from a simple set of axioms built upon a physical phenomenology of quantization—physically, the structure of QM results of an ...
Alexia Auffèves, Philippe Grangier
doaj   +1 more source

Witnessing causal nonseparability

open access: yesNew Journal of Physics, 2015
Our common understanding of the physical world deeply relies on the notion that events are ordered with respect to some time parameter, with past events serving as causes for future ones.
Mateus Araújo   +5 more
doaj   +1 more source

The expectation monad in quantum foundations [PDF]

open access: yesInformation and Computation, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jacobs, B.   +3 more
openaire   +4 more sources

Mimicking classical noise in ion channels by quantum decoherence

open access: yesScientific Reports
The mechanism of selectivity in ion channels is still an open question in biology. Recent studies suggest that the selectivity filter may exhibit quantum coherence, which could help explain how ions are selected and conducted.
Mina Seifi   +2 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Quantum Probability and The Foundations of Quantum Theory [PDF]

open access: yes, 1990
The point of view advocated, in the last ten years, by quantum probability about the foundations of quantum mechanics, is based on the investigation of the mathematical consequences of a deep and elementary idea developed by the founding fathers of quantum mechanics and accepted nowadays as a truism by most physicists, namely: one should be careful ...
openaire   +2 more sources

Paraconsistent Foundations for Quantum Probability

open access: yesCoRR, 2021
It is argued that a fuzzy version of 4-truth-valued paraconsistent logic (with truth values corresponding to True, False, Both and Neither) can be approximately isomorphically mapped into the complex-number algebra of quantum probabilities. I.e., p-bits (paraconsistent bits) can be transformed into close approximations of qubits.
openaire   +2 more sources

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