110 citations · 581 across the 12 of their papers we have counts for
4 papers · 2 filters
Toward Picard-Lefschetz Theory of Path Integrals, Complex Saddles and Resurgence
Alireza Behtash, Gerald V. Dunne, Thomas Schaefer +2
We show that the semi-classical analysis of generic Euclidean path integrals necessarily requires complexification of the action and measure, and consideration of complex saddle so…
Complexified path integrals, exact saddles and supersymmetry
Alireza Behtash, Gerald V. Dunne, Thomas Schaefer +2
In the context of two illustrative examples from supersymmetric quantum mechanics we show that the semi-classical analysis of the path integral requires complexification of the con…
The curious incident of multi-instantons and the necessity of Lefschetz thimbles
Alireza Behtash, Erich Poppitz, Tin Sulejmanpasic +1
We show that compatibility of supersymmetry with exact semi-classics demands that in calculating multi-instanton amplitudes, the "separation" quasi-zeromode must be complexified an…
Hidden topological angles and Lefschetz thimbles
Alireza Behtash, Tin Sulejmanpasic, Thomas Schaefer +1
We demonstrate the existence of hidden topological angles (HTAs) in a large class of quantum field theories and quantum mechanical systems. HTAs are distinct from theta-parameters…