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School of Physics and Astronomy

Daniele Dorigoni (Durham Univ.)

When: Thursday, November 5, 2020, 3:00 PM - 4:00 PM
Where: Zoom,

Stringy resurgence: modular graph functions and Poincare series

In string theory SL(2,Z) invariant functions, such as modular graph functions or coefficient functions of higher derivative corrections, are ubiquitous. Using a representation in terms of PoincarĂ© series we can combine different methods for asymptotic expansions and obtain the complete perturbative and non-perturbative expansion. In the case of the higher derivative corrections, these terms have an interpretation in terms of perturbative string loop effects and pairs of instantons/anti-instantons.