Results 1 to 10 of about 464,290 (281)

Quantum vacuum fluctuations [PDF]

open access: yesComptes Rendus de l'Académie des Sciences - Series IV - Physics, 2001
The existence of irreducible field fluctuations in vacuum is an important prediction of quantum theory. These fluctuations have many observable consequences, like the Casimir effect which is now measured with good accuracy and agreement with theory ...
Abbott   +97 more
core   +6 more sources

The Unruh quantum Otto engine

open access: yesJournal of High Energy Physics, 2018
We introduce a quantum heat engine performing an Otto cycle by using the thermal properties of the quantum vacuum. Since Hawking and Unruh, it has been established that the vacuum space, either near a black hole or for an accelerated observer, behaves as
Enrique Arias   +2 more
doaj   +3 more sources

The Localized Quantum Vacuum Field [PDF]

open access: yesPhysica Scripta, 2006
A model for the localized quantum vacuum is proposed in which the zero-point energy of the quantum electromagnetic field originates in energy- and momentum-conserving transitions of material systems from their ground state to an unstable state with ...
D Dragoman, Milonni P W
core   +2 more sources

Quantum compacton vacuum

open access: yes, 2010
We study the properties of classical and quantum compacton chains by means of extensive numerical simulations. Such chains are strongly nonlinear and their classical dynamics remains chaotic at arbitrarily low energies.
Pikovsky, A. S.   +2 more
core   +4 more sources

Quantum Charged Non-Linear Nano-String and Quantum Vacuum [PDF]

open access: yesInternational Journal of Theoretical Physics, 2005
The classical and quantum dynamic of a nonlinear chareged vibrating string and its interaction with quantum vacuum field is investigated. Some probability amplitudes for transitions between vacuum field and quantum states of the string are obtained.
Amooshahi, M., Kheirandish, F.
core   +3 more sources

Superradiance in Quantum Vacuum [PDF]

open access: yesQuantum Reports, 2021
A new process associated with the nonlinear optical properties of the electromagnetic quantum vacuum is described. It corresponds to the superradiant emission of photons, resulting from the interaction of an intense laser pulse with frequency ω0 with a ...
José Tito Mendonça
doaj   +2 more sources

Experimentally separating vacuum fluctuations from source radiation [PDF]

open access: yesNature Communications
The distinction between vacuum-field and source-radiation effects in phenomena such as the Lamb shift, Casimir forces, and spontaneous emission relies on additional assumptions at the theoretical level, and an experimental approach was never considered ...
Alexa Herter   +4 more
doaj   +2 more sources

Quantum Vacuum Sagnac Effect [PDF]

open access: yesPhysical Review Letters, 2021
We report on the quantum electrodynamical analogue of a Sagnac phase induced by the fast rotation of a neutral nanoparticle onto atomic waves propagating in its vicinity. The quantum vacuum Sagnac phase is a geometric Berry phase proportional to the angular velocity of rotation.
Guilherme C. Matos   +3 more
openaire   +3 more sources

Design of optically pumped cesium beam tube with hexapole magnetic system for longer lifetime and better SNR

open access: yesFrontiers in Physics, 2022
In order to get a better tradeoff between the long lifetime and high performances of cesium beam atomic clocks, we proposed a design scheme of compact optically pumped cesium beam tube (OPCBT) based on hexapole magnetic focusing (HMF) system for the ...
Haijun Chen   +3 more
doaj   +1 more source

Organic Optoelectronic Synapses for Sound Perception

open access: yesNano-Micro Letters, 2023
Highlights The organic optoelectronic synapse achieves unprecedented sound perception on volume, tone and timbre simultaneously. The quantitative relationship between the interfacial layers and synaptic performances is clarified.
Yanan Wei   +9 more
doaj   +1 more source

Home - About - Disclaimer - Privacy