Results 1 to 10 of about 2,665,834 (233)
Journal of Modern Optics, 2017 We know that in empty space there is no preferred state of rest. This is true both in special relativity but also in Newtonian mechanics with its associated Galilean relativity.
Barnett, Stephen M. +1 more
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Journal of High Energy Physics, 1999 We analyse symmetry breaking in general gauge theories paying particular attention to the underlying geometry of the theory. In this context we find two natural metrics upon the vacuum manifold: a Euclidean metric associated with the scalar sector, and ...
Lepora, Nathan. F.
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Physics Letters B, 2012 As an example of the unification of gravitation and particle physics, an exact solution of the five-dimensional field equations is studied which describes waves in the classical Einstein vacuum.
Wesson, Paul S.
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Collapse of Vacuum Bubbles in a Vacuum [PDF]
Physical Review D, 2010 Motivated by the discovery of a plenitude of metastable vacua in a string landscape and the possibility of rapid tunneling between these vacua, we revisit the dynamics of a false vacuum bubble in a background de Sitter spacetime.
C. W. Minser +4 more
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On vacuum-vacuum amplitude and Bogoliubov coefficients [PDF]
Journal of Experimental and Theoretical Physics, 2002 Even if the electromagnetic field does not create pairs, virtual pairs lead to the appearance of a phase in vacuum-vacuum amplitude. This makes it necessary to distinguish the in- and out-solutions even when it is commonly assumed that there is only one ...
A. A. Grib +16 more
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Levitodynamics: Levitation and control of microscopic objects in vacuum [PDF]
Science, 2021 Description To have to hold The ability to couple the motion of levitated systems to internal degrees of freedom—in some cases down to their motional ground state—as well as to external forces and systems provides opportunities for fundamental science ...
C. Gonzalez-Ballestero +4 more
semanticscholar +1 more source
Few-cycle vacuum squeezing in nanophotonics [PDF]
Science, 2022 One of the most fundamental quantum states of light is the squeezed vacuum, in which noise in one of the quadratures is less than the standard quantum noise limit.
Rajveer Nehra +6 more
semanticscholar +1 more source
Breakdown of topological protection by cavity vacuum fields in the integer quantum Hall effect [PDF]
Science, 2021 The prospect of controlling the electronic properties of materials via the vacuum fields of cavity electromagnetic resonators is emerging as one of the frontiers of condensed matter physics.
F. Appugliese +8 more
semanticscholar +1 more source
A G-Band Broadband Continuous Wave Traveling Wave Tube for Wireless Communications
Micromachines, 2022 Development of a G-band broadband continuous wave (CW) traveling wave tube (TWT) for wireless communications is described in this paper. This device provides the saturation output power over 8 W and the saturation gain over 30.5 dB with a bandwidth of 27
Yuan Feng +5 more
doaj +1 more source
Vertical Nanoscale Vacuum Channel Triodes Based on the Material System of Vacuum Electronics
Micromachines, 2023 Nanoscale vacuum channel triodes realize the vacuum-like transmission of electrons in the atmosphere because the transmission distance is less than the mean free path of electrons in air.
Panyang Han +3 more
doaj +1 more source