Results 31 to 40 of about 74,976 (305)
CRITICAL ACCELERATION AND QUANTUM VACUUM [PDF]
Towards Ultimate Understanding of the Universe, 2013 Little is known about the physics frontier of strong acceleration; both classical and quantum physics need further development in order to be able to address this newly accessible area of physics. In this lecture we discuss what strong acceleration means, possible experiments using electron-laser collisions, and data available from ultra-relativistic ...
Rafelski, Johann, Labun, Lance
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Fluctuations in the quantum vacuum [PDF]
Chaos, Solitons & Fractals, 2002 We argue that it is a fluctuational underpinning of the Quantum vacuum which on the one hand gives a stochastic character to the conservation laws, and on the other is required for explaining the recently observed acceleration of the universe. This also provides us with the arrow of time, in a consistent cosmology.
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Sonoluminescence as Quantum Vacuum Radiation [PDF]
Physical Review Letters, 1996 Sonoluminescence is explained in terms of quantum radiation by moving interfaces between media of different polarizability. It can be considered as a dynamic Casimir effect, in the sense that it is a consequence of the imbalance of the zero-point fluctuations of the electromagnetic field during the non-inertial motion of a boundary.
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The philosophy behind quantum gravity [PDF]
, 2006 This paper investigates some of the philosophical and conceptual issues raised by the search for a quantum theory of gravity. It is critically discussed whether such a theory is necessary in the first place, and how much would be accomplished if it is ...
Zinkernagel, Henrik +2 more
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Journal 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
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BQP-completeness of scattering in scalar quantum field theory [PDF]
Quantum, 2018 Recent work has shown that quantum computers can compute scattering probabilities in massive quantum field theories, with a run time that is polynomial in the number of particles, their energy, and the desired precision.
Stephen P. Jordan +3 more
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Geometrodynamics, inertia and the quantum vacuum [PDF]
37th Joint Propulsion Conference and Exhibit, 2001 Why does {\bf F} equal m{\bf a} in Newton's equation of motion? How does a gravitational field produce a force? Why are inertial mass and gravitational mass the same? It appears that all three of these seemingly axiomatic foundational questions have an answer involving an identical physical process: interaction between the electromagnetic quantum ...
Haisch, Bernard, Rueda, Alfonso
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Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary
Scientific Reports, 2022 We investigate, in the paradigm of open quantum systems, the dynamics of quantum coherence of a circularly accelerated atom coupled to a bath of vacuum fluctuating massless scalar field in a spacetime with a reflecting boundary.
Wanhe Zhang, Xiaobao Liu, Tingli Yang
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Dynamical Vacuum in Quantum Cosmology [PDF]
General Relativity and Gravitation, 1998 By regarding the vacuum as a perfect fluid with equation of state p=-rho, de Sitter's cosmological model is quantized. Our treatment differs from previous ones in that it endows the vacuum with dynamical degrees of freedom. Instead of being postulated from the start, the cosmological constant arises from the degrees of freedom of the vacuum regarded as
Alvarenga, Flávio G., Lemos, Nivaldo A.
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Measurement of vacuum pressure with a magneto-optical trap : a pressure-rise method [PDF]
, 2015 This research was supported by UK EPSRC grant GR/T08272/01, IOP Scotland and the Leverhulme Trust Research Project Grant RPG-2013-074.The lifetime of an atom trap is often limited by the presence of residual background gases in the vacuum chamber.
Bruce, Graham David +11 more
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