Results 31 to 40 of about 2,396,626 (307)
IEEE Access, 2021 This paper proposes a varactor-based circuit technique intended for amplitude and phase control, with improved linearity in the presence of parasitic capacitances and parasitic inductances.
David Berthiaume +2 more
doaj +1 more source
Physics Reports, 2017 This a pedagogical introduction to scattering amplitudes in gauge theories. It proceeds from Dirac equation and Weyl fermions to the two pivot points of current developments: the recursion relations of Britto, Cachazo, Feng and Witten, and the unitarity cut method pioneered by Bern, Dixon, Dunbar and Kosower.
openaire +3 more sources
A transient inflammatory response contributes to oxaliplatin neurotoxicity in mice
Annals of Clinical and Translational Neurology, Volume 9, Issue 12, Page 1985-1998, December 2022., 2022 Abstract Objectives Peripheral neuropathy is a relevant dose‐limiting adverse event that can affect up to 90% of oncologic patients with colorectal cancer receiving oxaliplatin treatment. The severity of neurotoxicity often leads to dose reduction or even premature cessation of chemotherapy.
Aina Calls +9 more
wiley +1 more source
Comparison of Propofol and Ketofol on Transcranial Motor Evoked Potentials in Patients Undergoing Thoracolumbar Spine Surgery [PDF]
Asian Spine Journal, 2022 Study Design This was a double-blind randomized study. Purpose The primary purpose was to compare the effects of propofol and ketofol on amplitudes and latencies of transcranial motor evoked potentials (TcMEPs) during thoracolumbar spine surgery.
Ankur Khandelwal +4 more
doaj +1 more source
Finite-amplitude inhomogeneous plane waves of exponential type in incompressible elastic materials [PDF]
, 2012 It is proved that elliptically-polarized finite-amplitude inhomogeneous plane waves may not propagate in an isotropic elastic material subject to the constraint of incompressibility.
Destrade, Michel
core +2 more sources
Journal of High Energy Physics, 2023 Abstract We study scattering amplitudes in the shadow conformal primary basis, which satisfies the same defining properties as the original conformal primary basis and has many advantages over it. The shadow celestial amplitudes exhibit locality manifestly on the celestial sphere, and behave like correlation functions in conformal ...
Chi-Ming Chang +4 more
openaire +3 more sources
Lorentzian LQG vertex amplitude [PDF]
, 2008 We generalize a model recently proposed for Euclidean quantum gravity to the case of Lorentzian signature. The main features of the Euclidean model are preserved in the Lorentzian one.
Pereira, Roberto
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Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015 A brief review is given of why twistor geometry has taken a central place in the theory of scattering amplitudes for fundamental particles. The emphasis is on the twistor diagram formalism as originally proposed by Penrose, the development of which has now led to the definition by Arkani-Hamedet al.of the ‘amplituhedron’.
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Energy’s and amplitudes’ positivity [PDF]
Journal 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
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S-duality and helicity amplitudes [PDF]
Journal 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 +5 more sources