13 research outputs found
The Steinmann Cluster Bootstrap for N=4 Super Yang-Mills Amplitudes
We review the bootstrap method for constructing six- and seven-particle
amplitudes in planar super Yang-Mills theory, by exploiting
their analytic structure. We focus on two recently discovered properties which
greatly simplify this construction at symbol and function level, respectively:
the extended Steinmann relations, or equivalently cluster adjacency, and the
coaction principle. We then demonstrate their power in determining the
six-particle amplitude through six and seven loops in the NMHV and MHV sectors
respectively, as well as the symbol of the NMHV seven-particle amplitude to
four loops.Comment: 36 pages, 4 figures, 5 tables, 1 ancillary file. Contribution to the
proceedings of the Corfu Summer Institute 2019 "School and Workshops on
Elementary Particle Physics and Gravity" (CORFU2019), 31 August - 25
September 2019, Corfu, Greec
Two-loop Sudakov form factor in ABJM
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Fluctuation of potential zinc status biomarkers throughout a reproductive cycle of primiparous and multiparous sows
Harmony of Super Form Factors
In this paper we continue our systematic study of form factors of half-BPS
operators in N=4 super Yang-Mills. In particular, we extend various techniques
known for amplitudes to the case of form factors, including MHV rules,
recursion relations, unitarity and dual MHV rules. As an application, we
present the solution of the recursion relation for split-helicity form factors.
We then consider form factors of the stress-tensor multiplet operator and of
its chiral truncation, and write down supersymmetric Ward identities using
chiral as well as non-chiral superspace formalisms. This allows us to obtain
compact formulae for families of form factors, such as the maximally non-MHV
case. Finally we generalise dual MHV rules in dual momentum space to form
factors.Comment: 1+42 pages, 18 figures; v2. affiliation updated, typo fixe
The Steinmann Cluster Bootstrap for = 4 Super Yang-Mills Amplitudes
We review the bootstrap method for constructing six- and seven-particle amplitudes in planar super Yang-Mills theory, by exploiting their analytic structure. We focus on two recently discovered properties which greatly simplify this construction at symbol and function level, respectively: the extended Steinmann relations, or equivalently cluster adjacency, and the coaction principle. We then demonstrate their power in determining the six-particle amplitude through six and seven loops in the NMHV and MHV sectors respectively, as well as the symbol of the NMHV seven-particle amplitude to four loops
The Steinmann Cluster Bootstrap for = 4 Super Yang-Mills Amplitudes
We review the bootstrap method for constructing six- and seven-particle amplitudes in planar super Yang-Mills theory, by exploiting their analytic structure. We focus on two recently discovered properties which greatly simplify this construction at symbol and function level, respectively: the extended Steinmann relations, or equivalently cluster adjacency, and the coaction principle. We then demonstrate their power in determining the six-particle amplitude through six and seven loops in the NMHV and MHV sectors respectively, as well as the symbol of the NMHV seven-particle amplitude to four loops.We review the bootstrap method for constructing six- and seven-particle amplitudes in planar super Yang-Mills theory, by exploiting their analytic structure. We focus on two recently discovered properties which greatly simplify this construction at symbol and function level, respectively: the extended Steinmann relations, or equivalently cluster adjacency, and the coaction principle. We then demonstrate their power in determining the six-particle amplitude through six and seven loops in the NMHV and MHV sectors respectively, as well as the symbol of the NMHV seven-particle amplitude to four loops