6 problems

The Yangian anomalies are anomalies in Lüscher's non-local charges, while chiral anomalies are the corresponding familiar anomalies in Gross–Neveu models. Yangian–chiral anomaly co…

The four-point fishnet integrals considered here depend on conformal cross-ratios, and their periods are solutions to an ideal of partial differential equations. A set of generator…

The FI chain is a fermionic chain in the HS-type family, whose partition function has the structure described above and whose spectrum exhibits high degeneracy. Yangian invariance…

Let $I_{n\bullet}^{m_1\dots m_n}$ denote the $n$-point massive Feynman integral with indices $a_1,\dots,a_n$, masses $m_1,\dots,m_n$, and dimension $D$. For each pair $i<j$, set ……

Consider planar Feynman graphs cut along a closed contour from one of the three regular tilings of the plane. The propagators are divided into boundary and internal propagators, an…

A planar Feynman graph is obtained by cutting a finite graph along a closed contour from a regular tiling of the plane; its propagators are divided into boundary and internal propa…