Results 21 to 30 of about 2,665,933 (332)
Vacuum Čerenkov Radiation [PDF]
Physical Review Letters, 2004 Within the classical Maxwell-Chern-Simons limit of the Standard-Model Extension (SME), the emission of light by uniformly moving charges is studied confirming the possibility of a Cherenkov-type effect. In this context, the exact radiation rate for charged magnetic point dipoles is determined and found in agreement with a phase-space estimate under ...
Lehnert, Ralf, Potting, Robertus
openaire +3 more sources
New Vacuum Electronic Devices for Radar
Leida xuebao, 2016 Vacuum Electronic Devices (VEDs) which are considered as the heart of a radar system, play an important role in their development. VEDs and radar systems supplement and promote each other.
Hu Yinfu, Feng Jinjun
doaj +1 more source
Applied Sciences, 2022 The pulsed laser has gradually become the standard method of studying the single-event effects of micro-nano devices, and it is a powerful supplement to heavy ion experiments on single-event effects.
Heng An +6 more
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Vacuum-Induced Transparency [PDF]
Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011, 2011 The transmission of light through an atomic gas can be controlled by manipulating the confining cavity.
Chen, Wenlan +4 more
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Electronics Letters, 2023 An ultrashort H‐plane sheet beam traveling‐wave tube (SB‐TWT) coupler without transition structure is proposed. The coupler adopts a new idea of directly coupling the microwave from H‐plane of the slow‐wave circuit (SWC) and optimizes the matching by ...
Zheng Guo +3 more
doaj +1 more source
Vacuum energy and $��$--vacuum [PDF]
Nuclear Physics B - Proceedings Supplements, 2003 The highly non-trivial structure of the $ $--vacuum encodes many of the fundamental properties of gauge theories. In particular, the response of the vacuum to the $ $--term perturbation is sensitive to the existence of confinement, chiral symmetry breaking, etc. We analyze the dependence of the vacuum energy density on theta around two special values,
openaire +1 more source
Cosmological and Astrophysical Probes of Vacuum Energy [PDF]
, 2015 Vacuum energy changes during cosmological phase transitions and becomes relatively important at epochs just before phase transitions. For a viable cosmology the vacuum energy just after a phase transition must be set by the critical temperature of the ...
Bellazzini, Brando +4 more
core +3 more sources
Two-pion contribution to hadronic vacuum polarization [PDF]
Journal of High Energy Physics, 2018 A bstractWe present a detailed analysis of e+e− → π+π− data up to s=1$$ \sqrt{s}=1 $$ GeV in the framework of dispersion relations. Starting from a family of ππ P-wave phase shifts, as derived from a previous Roy-equation analysis of ππ scattering, we ...
G. Colangelo, M. Hoferichter, P. Stoffer
semanticscholar +1 more source
Higgs mass and vacuum stability in the Standard Model at NNLO [PDF]
, 2012 A bstractWe present the first complete next-to-next-to-leading order analysis of the Standard Model Higgs potential. We computed the two-loop QCD and Yukawa corrections to the relation between the Higgs quartic coupling (λ) and the Higgs mass (Mh ...
G. Degrassi +6 more
semanticscholar +1 more source
Vacuum-ultraviolet photodetectors
, 2020 High-performance vacuum-ultraviolet (VUV) photodetectors are of great significance to space science, radiation monitoring, electronic industry and basic science.
Lemin Jia, Wei Zheng, Feng Huang
semanticscholar +1 more source