Results 41 to 50 of about 3,588,956 (379)

Large-amplitude driving of a superconducting artificial atom: Interferometry, cooling, and amplitude spectroscopy [PDF]

open access: yes, 2009
Superconducting persistent-current qubits are quantum-coherent artificial atoms with multiple, tunable energy levels. In the presence of large-amplitude harmonic excitation, the qubit state can be driven through one or more of the constituent energy ...
A. Fragner   +96 more
core   +2 more sources

S-duality and helicity amplitudes [PDF]

open access: yesJournal of High Energy Physics, 2016
We examine interacting Abelian theories at low energies and show that holomorphically normalized photon helicity amplitudes transform into dual amplitudes under SL(2,Z) as modular forms with weights that depend on the number of positive and negative helicity photons and on the number of internal photon lines.
Colwell, Kitran, Terning, John
openaire   +6 more sources

Nonlinear graphene plasmonics: amplitude equation [PDF]

open access: yes, 2013
Using perturbation expansion of Maxwell equations, the amplitude equation is derived for nonlinear TM and TE surface plasmon waves supported by graphene.
Gorbach, A. V.
core   +2 more sources

AMBIENT SEISMIC NOISE FOOTPRINTS AND SPECTRA IN THE MIDDLE BENUE TROUGH, NIGERIA

open access: yesEarth Science Malaysia, 2019
Ambient noise was analysed from a two-dimensional (2D) seismic data acquired in the Middle Benue Trough, Nigeria for the purpose of characterizing the ambient seismic noise.
Clifford N. C. Mbachi   +5 more
doaj   +1 more source

Split-spectrum amplitude-decorrelation angiography with optical coherence tomography

open access: yesOptics Express, 2012
Amplitude decorrelation measurement is sensitive to transverse flow and immune to phase noise in comparison to Doppler and other phase-based approaches. However, the high axial resolution of OCT makes it very sensitive to the pulsatile bulk motion noise ...
Yali Jia   +10 more
semanticscholar   +1 more source

Energy’s and amplitudes’ positivity [PDF]

open access: yesJournal of High Energy Physics, 2010
In QFT, the null energy condition (NEC) for a classical field configuration is usually associated with that configuration's stability against small perturbations, and with the sub-luminality of these. Here, we exhibit an effective field theory that allows for stable NEC-violating solutions with exactly luminal excitations only.
A. NICOLIS   +2 more
openaire   +5 more sources

Bootstrapping a Five-Loop Amplitude Using Steinmann Relations. [PDF]

open access: yesPhysical Review Letters, 2016
The analytic structure of scattering amplitudes is restricted by Steinmann relations, which enforce the vanishing of certain discontinuities of discontinuities.
S. Caron-Huot   +3 more
semanticscholar   +1 more source

Lectures on celestial amplitudes [PDF]

open access: yesThe European Physical Journal C, 2021
AbstractLecture notes prepared for the 2021 SAGEX PhD School in Amplitudes hosted by the University of Copenhagen August 10th through 13th. Topics covered include: the manifestation of asymptotic symmetries via soft theorems, their organization into currents in a celestial CFT, aspects of the holographic dictionary, a literature guide, and accompanying
openaire   +4 more sources

Information Models of Acupuncture Analgesia and Meridian Channels

open access: yesInformation, 2010
Acupuncture and meridian channels have been major components of Chinese and Eastern Asian medicine—especially for analgesia—for over 2000 years. In recent decades, electroacupuncture (EA) analgesia has been applied clinically and experimentally. However,
Chang Hua Zou, Kang Cheng
doaj   +1 more source

Impact of Arm Length and Body Mass Index on Abductor Pollicis Brevis (APB) H-Reflex among Females [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2019
Introduction: Hoffmann reflex (H-reflex) is an electrically induced reflex analogous to the mechanically induced spinal stretch reflex. H-reflex is useful clinically to diagnose nerve root lesions, particularly involving S1 radiculopathy and in proximal ...
D Rekha, B Suganthi
doaj   +1 more source

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