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Cherenkov Radiation from the Quantum Vacuum [PDF]
Physical Review Letters, 2019 A charged particle moving through a medium emits Cherenkov radiation when its velocity exceeds the phase velocity of light in that medium. Under the influence of a strong electromagnetic field, quantum fluctuations can become polarized, imbuing the vacuum with an effective anisotropic refractive index and allowing the possibility of Cherenkov radiation
MacLeod, Alexander J. +2 more
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Quantum vacuum instability near rotating stars [PDF]
Physical Review D, 1993 We discuss the Starobinskii-Unruh process for the Kerr black hole. We show how this effect is related to the theory of squeezed states. We then consider a simple model for a highly relativistic rotating star and show that the Starobinskii-Unruh effect is absent.
Matacz, A L +2 more
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Stimulating uncertainty: Amplifying the quantum vacuum with superconducting circuits [PDF]
, 2012 The ability to generate particles from the quantum vacuum is one of the most profound consequences of Heisenberg's uncertainty principle. Although the significance of vacuum fluctuations can be seen throughout physics, the experimental realization of ...
Barone, A. +19 more
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Chiral Vacuum Fluctuations in Quantum Gravity [PDF]
Physical Review Letters, 2011 We examine tensor perturbations around a deSitter background within the framework of Ashtekar's variables and cousins parameterized by the Immirzi parameter $ $. At the classical level we recover standard cosmological perturbation theory, with illuminating insights. Quantization leads to real novelties.
Magueijo J +1 more
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Enhancing Extractable Quantum Entropy in Vacuum-Based Quantum Random Number Generator
Entropy, 2018 Information-theoretically provable unique true random numbers, which cannot be correlated or controlled by an attacker, can be generated based on quantum measurement of vacuum state and universal-hashing randomness extraction.
Xiaomin Guo +5 more
doaj +1 more source
The Unruh Vacuum and the “In-Vacuum” in Reissner-Nordström Spacetime
Universe, 2023 The Unruh vacuum is widely used as a quantum state to describe black hole evaporation since, near the horizon, it reproduces the physical state of a quantum field, the so-called “in-vacuum”, in the case where a black hole is formed by gravitational ...
Roberto Balbinot, Alessandro Fabbri
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, 2003 The connection between the quantum-vacuum geometric phases (which originates from the vacuum zero-point electromagnetic fluctuation) and the non-normal product procedure is considered in the present Letter.
268 +28 more
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Electromagnetic shocks in the quantum vacuum [PDF]
Physical Review D, 2019 The interaction of two counter-propagating electromagnetic waves in a vacuum is analyzed within the framework of the Heisenberg-Euler formalism in quantum electrodynamics. The nonlinear electromagnetic wave in the quantum vacuum is characterized by wave steepening, subsequent generation of high order harmonics and electromagnetic shock wave formation ...
Kadlecová, H., Korn, G., Bulanov, S. V.
openaire +2 more sources
Nonclassical correlations of photon number and field components in the vacuum state [PDF]
, 2000 It is shown that the quantum jumps in the photon number n from zero to one or more photons induced by backaction evasion quantum nondemolition measurements of a quadrature component x of the vacuum light field state are strongly correlated with the ...
A. Einstein +17 more
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Can observations inside the Solar System reveal the gravitational properties of the quantum vacuum?
, 2012 The understanding of the gravitational properties of the quantum vacuum might be the next scientific revolution.It was recently proposed that the quantum vacuum contains the virtual gravitational dipoles; we argue that this hypothesis might be tested ...
Hajdukovic, Dragan Slavkov
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