https://doi.org/10.1140/epjc/s10052-021-09830-1
Letter
Testing a new method for scattering in finite volume in the 
theory
1
HISKP (Theory), Rheinische Friedrich-Wilhelms-Universität Bonn, Nussallee 14-16, 53115, Bonn, Germany
2
IFIC, CSIC-Universitat de València, 46980, Paterna, Spain
3
Tbilisi State University, 0186, Tbilisi, Georgia
Received:
30
July
2021
Accepted:
15
November
2021
Published online:
26
November
2021
We test an alternative proposal by Bruno and Hansen (J High Energy Phys 2021(6), https://doi.org/10.1007/JHEP06(2021)043, 2021) to extract the scattering length from lattice simulations in a finite volume. For this, we use a scalar theory with two mass nondegenerate particles and explore various strategies to implement this new method. We find that the results are comparable to those obtained from the Lüscher method, with somewhat smaller statistical uncertainties at larger volumes.
© The Author(s) 2021
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