A piece of cake: the ground-state energies in gamma_i-deformed N=4 SYM theory

Understand

In the non-supersymmetric gamma_i-deformed N=4 SYM theory, the scaling dimensions of the operators tr[Z^L] composed of L scalar fields Z receive finite-size wrapping and prewrapping corrections in the 't Hooft limit.

• In this paper, we calculate these scaling dimensions to leading wrapping order directly from Feynman diagrams.
• For L>=3, the result is proportional to the maximally transcendental `cake' integral.
• It matches with an earlier result obtained from the integrability-based Luescher corrections, TBA and Y-system equations.