Results 41 to 50 of about 420,119 (232)
Scattering amplitudes from dispersive iterations of unitarity
Journal of High Energy Physics, 2023 We present and numerically implement a computational method to construct relativistic scattering amplitudes that obey analyticity, crossing, elastic and inelastic unitarity in three and four spacetime dimensions.
Piotr Tourkine, Alexander Zhiboedov
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Surface-Integral Approach to the Coulomb Few-Body Scattering Problem
EPJ Web of Conferences, 2010 We present main features of a surface-integral approach to the Coulomb few-body scattering problem. This approach is valid for both short-range and Coulombic longe-range interactions.
Stelbovics A.T. +3 more
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Four-gauge-particle scattering amplitudes and Polyakov string path integral in the proper-time gauge
Physics Letters B, 2019 We evaluate four-gauge-particle tree level scattering amplitudes using the Polyakov string path integral in the proper-time gauge, where the string path integral can be cast into the Feynman-Schwinger proper-time representation.
Taejin Lee
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Chaotic scattering of highly excited strings
Journal of High Energy Physics, 2021 Motivated by the desire to understand chaos in the S-matrix of string theory, we study tree level scattering amplitudes involving highly excited strings. While the amplitudes for scattering of light strings have been a hallmark of string theory since its
David J. Gross, Vladimir Rosenhaus
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Research Paper: Simulated Calculation of Scattering Cross Section of Proton-Deuteron to Helium-Pion Chain Decay Using Chiral Perturbation Theory [PDF]
فیزیک کاربردی ایران, 2022 In this research, the chiral perturbation theory and the mechanism of three-body forces, which are of great importance, are employed through simulations to investigate the chain interaction.
Mojtaba Goodarzi
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Pion-pion scattering amplitude [PDF]
Physical Review D, 2005 We obtain reliable ππ scattering amplitudes consistent with experimental data, both at low and high energies, and fulfilling appropriate analyticity properties. We do this by first fitting experimental low energy [s^(1/2) ≤ (1.42 GeV] phase shifts and inelasticities with expressions that incorporate analyticity and unitarity.
Peláez Sagredo, José Ramón +1 more
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Scattering amplitudes in Lifshitz spacetime [PDF]
Classical and Quantum Gravity, 2014 We consider the calculation of scattering amplitudes in field theories dual to Lifshitz spacetimes. These amplitudes provide an interesting probe of the IR structure of the field theory; our aim is to use them to explore the observable consequences of the singularity in the spacetime.
Andrade, T., Ross, Simon F., Lei, Y.
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Scattering of color dipoles: from low to high energies [PDF]
, 2002 A dipole-dipole scattering amplitude is calculated exactly in the first two orders of perturbation theory. This amplitude is an analytic function of the relative energy and the dipoles' sizes.
Babansky, Alexander, Balitsky, Ian
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Nuclear and Particle Physics Proceedings, 2015 AbstractI analyze the algebraic patterns underlying the structure of scattering amplitudes in quantum field theory. I focus on the decomposition of amplitudes in terms of independent functions and the systems of differential equations the latter obey.
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A New Proposal for the Picture Changing Operators in the Minimal Pure Spinor Formalism
, 2011 Using a new proposal for the "picture lowering" operators, we compute the tree level scattering amplitude in the minimal pure spinor formalism by performing the integration over the pure spinor space as a multidimensional Cauchy-type integral.
CR Mafra +25 more
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