2012/01/01 by Nguyen Suan Han, Le Hai Yen, Nguyen Nhu Xuan
Physics and Astronomy · #hep-th #quant-ph
paper · pdf · doi:10.1142/s0217751x12500042
published as International Journal of Modern Physics A, Vol. 27, No. 1 (2012) 1250004 · 18 pages. arXiv admin note: substantial text overlap with arXiv:0804.3432
arxiv created 2012/01/01 · arxiv updated 2015/06/03
Asymptotic behavior of the scattering amplitude for two scalar particles by scalar, vector and tensor exchanges at high energy and fixed momentum transfers is reconsidered in quantum field theory. In the framework of the quasi-potential approach and the modified perturbation theory a systematic scheme of finding the leading eikonal scattering amplitudes and its corrections are developed and constructed.The connection between the solutions obtained by quasi-potential and functional approaches is also discussed.The first correction to leading eikonal amplitude is found. Keywords: Eikonal scattering theory, Quantum gravity.