Results 11 to 20 of about 2,588,382 (336)
Scattering amplitude annihilators [PDF]
Journal of High Energy Physics, 2020 Several second order differential operators are shown to annihilate the YM and GR tree scattering amplitudes. In particular we prove a conjecture of Loebbert, Mojaza and Plefka from their investigation of a hidden conformal symmetry in GR.Comment: 31 ...
Nützi, Andrea, Reiterer, Michael
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Spinning amplitudes from scalar amplitudes [PDF]
Journal 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
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Amplitude nanofriction spectroscopy [PDF]
Nanoscale, 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.
Antoine Lainé +7 more
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Waveforms from amplitudes [PDF]
Physical Review D, 2022 We show how to compute classical wave observables using quantum scattering amplitudes. We discuss observables both with incoming and with outgoing waves. The required classical limits are naturally described by coherent states of massless bosons.
Cristofoli, Andrea +3 more
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Journal 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
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Frontiers in Sleep, 2023 IntroductionA consolidated sleep-wake pattern is essential for maintaining healthy cognition in older individuals, but many suffer from sleep fragmentation that exacerbates age-related cognitive decline and worsens overall mental and physical health ...
Renske Lok +7 more
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Scalar-graviton amplitudes [PDF]
Journal of High Energy Physics, 2019 Abstract Using the CHY-formalism and its extension to a double cover we provide covariant expressions for tree-level amplitudes with two massive scalar legs and an arbitrary number of gravitons in D dimensions. Using unitarity methods, such amplitudes are needed inputs for the computation of post-Newtonian and post-Minkowskian ...
Bjerrum-Bohr, N. E. J. +3 more
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A universal broadband and CEP stable seeder for high-power amplifiers [PDF]
EPJ Web of ConferencesThis work presents a universal seeder architecture based on filamentation and parametric amplification from an Ytterbium pump laser for the generation of pulses with versatile properties in terms of central wavelength, bandwidth, CEP, and contrast for ...
Maksimenka Raman +7 more
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Amplitude dependence of image quality in atomically-resolved bimodal atomic microscopy [PDF]
, 2016 In bimodal FM-AFM, two flexural modes are excited simultaneously. The total vertical oscillation deflection range of the tip is the sum of the peak-to-peak amplitudes of both flexural modes (sum amplitude).
Arai, Toyoko +5 more
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Annales Henri Poincaré, 2017 In this work, we argue that the α′→0 limit of closed string theory scattering amplitudes is a tropical limit. The motivation is to develop a technology to systematize the extraction of Feynman graphs from string theory amplitudes at higher genus.
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