Results 61 to 70 of about 2,396,626 (307)
Divergences of Discrete States Amplitudes and Effective Lagrangian in 2D String Theory [PDF]
Mod.Phys.Lett. A8 (1993) 1469-1476, 1992 Scattering amplitudes for discrete states in 2D string theory are considered. Pole divergences of tree-level amplitudes are extracted and residues are interpreted as renormalized amplitudes for discrete states. An effective Lagrangian generating renormalized amplitudes for open string is written and corresponding Ward identities are presented.
arxiv +1 more source
TRANSITION DISTRIBUTION AMPLITUDES [PDF]
Exclusive Reactions at High Momentum Transfer, 2008 8 pages, 3 figures, LaTeX, uses ws-procs9x6-notrimmark.cls (included); Invited talk at the workshop on Exclusive Reactions at High Momentum Transfer, 21-24 May 2007, Jefferson Lab, Newport News, VA, U.S ...
Lansberg, J. P. +2 more
openaire +4 more sources
Semiclassical approach to fidelity amplitude [PDF]
, 2011 The fidelity amplitude is a quantity of paramount importance in echo type experiments. We use semiclassical theory to study the average fidelity amplitude for quantum chaotic systems under external perturbation. We explain analytically two extreme cases:
Arnold V I +17 more
core +2 more sources
Physical Review D, 2023 56 pages plus appendices, v2:minor typos fixed, v3:minor correction, v4:edited for ...
Graham R. Brown +2 more
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Unitarized pion-nucleon scattering amplitude from inverse amplitude method
, 2003 In a recent work on low energy pion-nucleon scattering, instead of using chiral perturbation theory (ChPT) amplitude, we started from a pion-nucleon {\it soft-pion} result and used elastic unitarity directly as a dynamical constraint to construct first ...
Arndt +22 more
core +1 more source
Graviton amplitudes from collinear limits of gauge amplitudes
Physics Letters B, 2015 We express all tree-level graviton amplitudes in Einstein's gravity as the collinear limits of a linear combination of pure Yang-Mills amplitudes in which each graviton is represented by two gauge bosons, each of them carrying exactly one half of graviton's momentum and helicity.
Stieberger, Stephan, Taylor, Tomasz R.
openaire +4 more sources
Peculiarities of Movement Plastique Development in Young Gymnasts
Physical Education Theory and Methodology, 2018 The purpose of this study was to substantiate and create a technique for the development of movement plastique in gymnastics at the initial training stage and experimentally verify its effectiveness.
T. Kravchuk, N. Sanzharova, A. Udovika
doaj +1 more source
On unitarity of the Coon amplitude
Journal of High Energy Physics, 2023 Abstract The Coon amplitude is a one-parameter deformation of the Veneziano amplitude. We explore the unitarity of the Coon amplitude through its partial wave expansion using tools from q-calculus. Our analysis establishes manifest positivity on the leading and sub-leading Regge trajectories in arbitrary spacetime dimensions D ...
Bhardwaj, Rishabh +3 more
openaire +3 more sources
Spanish Journal of Agricultural Research, 2016 The fruit harvesting is a key factor involving both product quality and profitability. Particularly, mechanical harvesting of traditional oil olive orchards is hint by tree training system for manual harvesting, tree size and several and slanted trunks ...
Rafael R. Sola-Guirado +5 more
doaj +1 more source
Nonlinear graphene plasmonics: amplitude equation [PDF]
, 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