One-loop N=8 Supergravity Amplitudes from MHV Diagrams

Details One-loop N=8 Supergravity Amplitudes from MHV Diagrams One-loop N=8 Supergravity Amplitudes from MHV Diagrams

2007-06-07

arxiv.org/abs/0706.0976v1

Class.Quant.Grav.24:6071-6096,2007

Physics

High Energy Physics

High Energy Physics - Theory

33 pages, 10 figures

Scientific paper

10.1088/0264-9381/24/23/024

We discuss the calculation of one-loop amplitudes in N=8 supergravity using MHV diagrams. In contrast to MHV amplitudes of gluons in Yang-Mills, tree-level MHV amplitudes of gravitons are not holomorphic in the spinor variables. In order to extend these amplitudes off shell, and use them as vertices to build loops, we introduce certain shifts for the spinor variables associated to the loop momenta. Using this off-shell prescription, we rederive the four-point MHV amplitude of gravitons at one loop, in complete agreement with known results. We also discuss the extension to the case of one-loop MHV amplitudes with an arbitrary number of gravitons.

Affiliated with

Also associated with

No associations

Rating

One-loop N=8 Supergravity Amplitudes from MHV Diagrams does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with One-loop N=8 Supergravity Amplitudes from MHV Diagrams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and One-loop N=8 Supergravity Amplitudes from MHV Diagrams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-442087