Welcome to PhysicsOverflow! PhysicsOverflow is an open platform for community peer review and graduate-level Physics discussion.
Please help promote PhysicsOverflow ads elsewhere if you like it.
PO is now at the Physics Department of Bielefeld University!
New printer friendly PO pages!
Migration to Bielefeld University was successful!
Please vote for this year's PhysicsOverflow ads!
Please do help out in categorising submissions. Submit a paper to PhysicsOverflow!
... see more
(propose a free ad)
Please use comments to point to previous work in this direction, and reviews to referee the accuracy of the paper. Feel free to edit this submission to summarise the paper (just click on edit, your summary will then appear under the horizontal line)
(Is this your paper?)
We initiate an exploration of the physics and geometry of the amplituhedron, starting with the simplest case of the integrand for four-particle scattering in planar N=4 SYM. We show how the textbook structure of the unitarity double-cut follows from the positive geometry. We also use the geometry to expose the behavior of the multicollinear limit, providing a direct motivation for studying the logarithm of the amplitude. In addition to computing the two and three-loop integrands, we explore various lower-dimensional faces of the amplituhedron, thereby computing non-trivial cuts of the integrand to all loop orders.
user contributions licensed under cc by-sa 3.0 with attribution required