Testing a new method for scattering in finite volume in the φ4 theory

被引：0
作者：
Garofalo, Marco [1 ]
Romero-Lopez, Fernando [2 ]
Rusetsky, Akaki [1 ,3 ]
Urbach, Carsten [1 ]
机构：
[1] Rheinische Friedrich Wilhelms Univ Bonn, HISKP Theory, Nussallee 14-16, D-53115 Bonn, Germany
[2] Univ Valencia, CSIC, IFIC, Paterna 46980, Spain
[3] Tbilisi State Univ, GE-0186 Tbilisi, Georgia
来源：
EUROPEAN PHYSICAL JOURNAL C | 2021年 / 81卷 / 11期
基金：
欧盟地平线“2020”;
关键词：
QUANTUM-FIELD THEORIES; SPECTRUM; DECAYS;
D O I：
10.1140/epjc/s10052-021-09830-1
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
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 phi(4) 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 Luscher method, with somewhat smaller statistical uncertainties at larger volumes.
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页数：5
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