• Corpus ID: 220961696

Taylor expansions on Lefschetz thimbles (and not only that)

@article{Renzo2020TaylorEO,
  title={Taylor expansions on Lefschetz thimbles (and not only that)},
  author={Francesco Di Renzo and Simran Singh and K. Zambello},
  journal={arXiv: High Energy Physics - Lattice},
  year={2020}
}
Thimble regularisation is a possible solution to the sign problem, which is evaded by formulating quantum field theories on manifolds where the imaginary part of the action stays constant (Lefschetz thimbles). A major obstacle is due to the fact that one in general needs to collect contributions coming from more than one thimble. Here we explore the idea of performing Taylor expansions on Lefschetz thimbles. We show that in some cases we can compute expansions in regions where only the dominant… 

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