https://doi.org/10.1051/epjconf/202227101011
Spectrum of few-body systems in a finite volume
The Racah Institute of Physics, The Hebrew University, Jerusalem 9190401, Israel
* e-mail: betzalel.bazak@mail.huji.ac.il
Published online: 9 November 2022
Lattice quantum chromodynamics calculations of multi-baryon systems with physical quark masses could bridge the gap between nuclear physics and its fundamental theory. Such calculations are performed on a finite grid, and thus extrapolation of finite-volume numerical results to the physical-relevant free-space quantities is needed. A common approach for the extrapolation utilizes the two-body Lüscher formula and its generalization to larger systems. To understand better the accuracy of this approach we study here two model systems, bosonic and fermionic. The few-body systems are solved with the stochastic variational method in a periodic box, and the extrapolated values are compared to those calculated directly in free space.
© The Authors, published by EDP Sciences, 2022
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