#### Alladi Ramakrishnan Hall

#### GKZ hypergeometric system of multi-loop Feynman integrals and their asymptotic expansions

#### Ratan Sarkar

##### IMSc

*To match the increasing precision at the collider experiments, it is a requirement from the theoretical side, to include higher order terms in the perturbative expansions of physical observables. One of important ingredients for higher order calculations is*

multi-loop Feynman integrals. The construction of system of differential equations for multi-loop Feynman integrals has become a standard tool in the context of precision calculations. In general, it is a non-trivial task to find the boundary values for

Feynman integrals. In this talk, I will present an algorithm for the calculation of boundary values for multi-loop Feynman integrals based on GKZ hypergeometric system and asymptotic expansions.

Done