Off-shell CHY amplitudes

被引：9
|
作者：
Lam, C. S. [1 ,2 ]
Yao, York-Peng [3 ]
机构：
[1] McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada
[2] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
[3] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
来源：
NUCLEAR PHYSICS B | 2016年 / 907卷
关键词：
D O I：
10.1016/j.nuclphysb.2016.04.023
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The Cachazo-He-Yuan (CHY) formula for on-shell scattering amplitudes is extended off-shell. The off shell amplitudes (amputated Green's functions) are Mobius invariant, and have the same momentum poles as the on-shell amplitudes. The working principles which drive the modifications to the scattering equations are mainly Mobius covariance and energy momentum conservation in off-shell kinematics. The same technique is also used to obtain off-shell massive scalars. A simple off-shell extension of the CHY gauge formula which is Mobius invariant is proposed, but its true nature awaits further study. (C) 2016 The Authors. Published by Elsevier B.V.
引用
收藏
页码：678 / 694
页数：17
相关论文
共 50 条
  • [1] Off-shell CHY amplitudes and Feynman graphs
    Dolan, Louise
    Goddard, Peter
    [J]. JOURNAL OF HIGH ENERGY PHYSICS, 2020, 2020 (04)
  • [2] Off-shell CHY amplitudes and Feynman graphs
    Louise Dolan
    Peter Goddard
    [J]. Journal of High Energy Physics, 2020
  • [3] Off-shell amplitudes and Grassmannians
    Bork, L. V.
    Onishchenko, A. I.
    [J]. PHYSICS OF PARTICLES AND NUCLEI, 2017, 48 (05) : 810 - 812
  • [4] Off-shell amplitudes and Grassmannians
    L. V. Bork
    A. I. Onishchenko
    [J]. Physics of Particles and Nuclei, 2017, 48 : 810 - 812
  • [5] Scattering amplitudes with off-shell quarks
    van Hameren, A.
    Kutak, K.
    Salwa, T.
    [J]. PHYSICS LETTERS B, 2013, 727 (1-3) : 226 - 233
  • [6] On off-shell bosonic string amplitudes
    Cappiello, L
    Marotta, R
    Pettorino, R
    Pezzella, F
    [J]. MODERN PHYSICS LETTERS A, 1998, 13 (30) : 2433 - 2443
  • [7] COVARIANT OFF-SHELL STRING AMPLITUDES
    SAMUEL, S
    [J]. NUCLEAR PHYSICS B, 1988, 308 (2-3) : 285 - 316
  • [8] Off-shell Amplitudes in Superstring Theory
    Sen, Ashoke
    [J]. FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS, 2015, 63 (3-4): : 149 - +
  • [9] A CALCULATION OF OFF-SHELL SCATTERING AMPLITUDES
    NISHIDA, Y
    [J]. NUCLEAR PHYSICS, 1966, 82 (02): : 385 - &
  • [10] Phase of the off-shell partial amplitudes
    Petrov, VA
    [J]. THEORETICAL AND MATHEMATICAL PHYSICS, 2001, 129 (01) : 1398 - 1399
12345