2 papers
hep-th2024
Landau Singularities of the 7-Point Ziggurat II
Luke Lippstreu, Marcus Spradlin, Akshay Yelleshpur Srikant +1
We solve the Landau equations to find the singularities of nine three-loop 7-point graphs that arise as relaxations of the graph studied in arXiv:2211.16425. Along the way we estab…
hep-th2024
Landau Singularities of the 7-Point Ziggurat I
Luke Lippstreu, Marcus Spradlin, Anastasia Volovich
We compute the leading (first-type Landau) singularities of a certain four-loop 7-point graph that is related to the 7-point ``ziggurat'' graph by the graphical moves familiar from…