We study the spectrum of asymptotic states in the spin-chain description of planar N = 4 SUSY Yang-Mills. In addition to elementary magnons, the asymptotic spectrum includes an infinite tower of multi-magnon bound states with exact dispersion relation,

The asymptotic spectrum of graphs, introduced by Zuiddam (Combinatorica, 2019), is the space graph parameters that are additive under disjoint union, multiplicative strong product, normalized and monotone homomorphisms between complements. He used it to obtain a dual characterization Shannon capacity graphs as minimum evaluation function over noted several known upper bounds, including Lovász n...

The asymptotic restriction problem for tensors is to decide, given $s$ and $t$, whether the nth tensor power of can be obtained from $(n+o(n))$th t by applying linear maps legs (this we call restriction), when $n$ goes infinity. In this context, Volker Strassen, striving understand complexity matrix multiplication, introduced in 1986 spectrum tensors. Essentially, a family $X$, closed under dir...