Results 11 to 20 of about 3,698,626 (376)

Spinning amplitudes from scalar amplitudes [PDF]

open access: yesJournal of High Energy Physics, 2021
AbstractWe provide a systematic method to compute tree-level scattering amplitudes with spinning external states from amplitudes with scalar external states in arbitrary spacetime dimensions. We write down analytic answers for various scattering amplitudes, including the four graviton amplitude due to the massive spinJexchange. We verify the results by
Mahesh K. N. Balasubramanian   +2 more
openaire   +4 more sources

Crack-free high-aspect ratio holes in glasses by top–down percussion drilling with infrared femtosecond laser GHz-bursts

open access: yesInternational Journal of Extreme Manufacturing, 2022
We report novel results on top-down percussion drilling in different glasses with femtosecond laser GHz-bursts. Thanks to this particular regime of light – matter interaction, combining non-linear absorption and thermal cumulative effects, we obtained ...
Pierre Balage   +4 more
doaj   +1 more source

Algebras for amplitudes [PDF]

open access: yesJournal of High Energy Physics, 2012
Abstract Tree-level amplitudes of gauge theories are expressed in a basis of auxiliary amplitudes with only cubic vertices. The vertices in this formalism are explicitly factorized in color and kinematics, clarifying the color-kinematics duality in gauge theory amplitudes.
Bjerrum-Bohr, N. Emil J.   +3 more
openaire   +2 more sources

Effect of Umbilical Cord Ferritin Level on Auditory Brainstem Response Threshold in Newborns [PDF]

open access: yesIranian Journal of Otorhinolaryngology, 2020
Introduction: Iron plays an important role in myelination. Ferritin is a reliable indicator of the tissue iron store and umbilical cord ferritin level reflects the in utero iron stores.
Soumyajit Das   +4 more
doaj   +1 more source

Dielectric metasurfaces for complete and independent control of the optical amplitude and phase [PDF]

open access: yesLight: Science & Applications, 2019
Metasurfaces are optically thin metamaterials that promise complete control of the wavefront of light but are primarily used to control only the phase of light.
A. Overvig   +6 more
semanticscholar   +1 more source

STATISTIC OF SEASONAL AND DIURNAL VARIATIONS OF DOPPLER FREQUENCY SHIFT OF HF SIGNALS AT MID-LATITUDE RADIO PATH [PDF]

open access: yesRadio Physics and Radio Astronomy, 2020
Purpose: An experimental study of signatures of traveling ionospheric disturbances (TID) observed in diurnal-seasonal variations of the parameters of probe HF signals propagating on theoblique single-hop RWM–LFO radio path, derived from the yearlong ...
A. I. Reznychenko   +3 more
doaj   +1 more source

Normative values of visual evoked potential in adults

open access: yesIndian Journal of Ophthalmology, 2021
Purpose: Visual evoked potentials (VEP) are used to determine the function of visual pathway from the optic nerve to visual cortex. Various factors may affect VEP response, viz., technical and environmental.
Merry Septemi Ekayanti   +2 more
doaj   +1 more source

Amplitude estimation without phase estimation [PDF]

open access: yesQuantum Information Processing, 2019
This paper focuses on the quantum amplitude estimation algorithm, which is a core subroutine in quantum computation for various applications. The conventional approach for amplitude estimation is to use the phase estimation algorithm, which consists of ...
Yohichi Suzuki   +5 more
semanticscholar   +1 more source

Uncertainty of ENSO-amplitude projections in CMIP5 and CMIP6 models

open access: yesClimate Dynamics, 2021
There is a long-standing debate on how the El Niño/Southern Oscillation (ENSO) amplitude may change during the twenty-first century in response to global warming.
G. Beobide‐Arsuaga   +3 more
semanticscholar   +1 more source

Amplitude nanofriction spectroscopy [PDF]

open access: yesNanoscale, 2021
Model nanocontacts formed at a gold–HOPG interface exhibit a complex frictional behavior with a variety of phenomena, from thermolubricity to superlubricity and exotic sliding dynamics.
Lainé, Antoine   +4 more
openaire   +4 more sources

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