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newolder wrote:Lance Dixon/Sean Carroll blog post on "amplitudes'. The topic's work gets a brief mention too.
http://www.preposterousuniverse.com/blo ... mplitudes/
Rumraket wrote::rofl:
EPFL seminars
The Amplituhedron
by Nima Arkani-Hamed (IAS)
Monday, 9 December 2013 from 11:00 to 12:00 (Europe/Zurich)
at EPFL, Lausanne ( Cubotron )
Description
Perturbative scattering amplitudes in gauge theories have remarkable simplicity and hidden infinite dimensional symmetries that are completely obscured in the conventional formulation of field theory using Feynman diagrams, suggesting the existence of a new understanding for what amplitudes “really are”, where Locality and Unitarity do not play a central role but are derived consequences of more primitive principles.
In this note we provide such an understanding for N = 4 SYM scattering amplitudes in the planar limit, which we define as “the volume” of a new mathematical object –the Amplituhedron– generalizing the Positive Grassmannian. Locality and Unitarity
emerge hand-in-hand from positive geometry.
iamthereforeithink wrote:newolder wrote:1st paper, The Amplituhedron, posted.
Very interesting. Thanks
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newolder wrote:iamthereforeithink wrote:newolder wrote:1st paper, The Amplituhedron, posted.
Very interesting. Thanks
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hic...
Trying going here and follow "Watch the video"...
...
In the remainder of this section, we will de- scribe how all such identities arise homologically in the Grassmannian, and can be understood in purely geometric (even combinatorial) terms. In section 12, we will illustrate the power of the combinatorial tools at our disposal, by giving an explicit classification of all Yangian-invariants and their relations through N4MHV.
newolder wrote:Combinatronics (is that a thing? ) ...
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