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pro vyhledávání: '"Schreiber, Anders"'
The Amplituhedron provides, via geometric means, the all-loop integrand of scattering amplitudes in maximally supersymmetric Yang-Mills theory. Unfortunately, dimensional regularization, used conventionally for integration, breaks the beautiful geome
Externí odkaz:
http://arxiv.org/abs/2311.10814
Publikováno v:
J. High Energ. Phys. 2023, 80 (2023)
We determine tree level, all-order celestial operator product expansions (OPEs) of gluons and gravitons in the maximally helicity violating (MHV) sector. We start by obtaining the all-order collinear expansions of MHV amplitudes using the inverse sof
Externí odkaz:
http://arxiv.org/abs/2305.11851
Autor:
Mago, Jorge, Schreiber, Anders, Spradlin, Marcus, Srikant, Akshay Yelleshpur, Volovich, Anastasia
Symbol alphabets of n-particle amplitudes in N=4 super-Yang-Mills theory are known to contain certain cluster variables of Gr(4,n) as well as certain algebraic functions of cluster variables. In this paper we solve the C Z = 0 matrix equations associ
Externí odkaz:
http://arxiv.org/abs/2106.01406
Autor:
Mago, Jorge, Schreiber, Anders, Spradlin, Marcus, Srikant, Akshay Yelleshpur, Volovich, Anastasia
Symbol alphabets of n-particle amplitudes in N=4 super-Yang-Mills theory are known to contain certain cluster variables of Gr(4,n) as well as certain algebraic functions of cluster variables. The first paper arXiv:2007.00646 in this series focused on
Externí odkaz:
http://arxiv.org/abs/2012.15812
Symbol alphabets of n-particle amplitudes in N=4 super-Yang-Mills theory are known to contain certain cluster variables of Gr(4,n) as well as certain algebraic functions of cluster variables. In this paper we suggest an algorithm for computing these
Externí odkaz:
http://arxiv.org/abs/2007.00646
We study cluster adjacency conjectures for amplitudes in maximally supersymmetric Yang-Mills theory. We show that the n-point one-loop NMHV ratio function satisfies Steinmann cluster adjacency. We also show that the one-loop BDS-like normalized NMHV
Externí odkaz:
http://arxiv.org/abs/2005.07177
We conjecture that every rational Yangian invariant in N=4 SYM theory satisfies a recently introduced notion of cluster adjacency. We provide evidence for this conjecture by using the Sklyanin Poisson bracket on Gr(4,n) to check numerous examples.
Externí odkaz:
http://arxiv.org/abs/1906.10682
Massless scattering amplitudes in four-dimensional Minkowski spacetime can be Mellin transformed to correlation functions on the celestial sphere at null infinity called celestial amplitudes. We study various properties of massless four-point scalar
Externí odkaz:
http://arxiv.org/abs/1904.10940
Pasterski, Shao and Strominger have recently proposed that massless scattering amplitudes can be mapped to correlators on the celestial sphere at infinity via a Mellin transform. We apply this prescription to arbitrary $n$-point tree-level gluon ampl
Externí odkaz:
http://arxiv.org/abs/1711.08435
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