@Article{Romero-Lopez_etal2021,
author="Romero-Lopez, F.
and Rusetsky, A.
and Schlage, N.
and Urbach, C.",
title="Relativistic N-particle energy shift in finite volume",
journal="Journal of High Energy Physics",
year="2021",
publisher="Springer",
volume="02",
number="2",
pages="060--52pp",
optkeywords="Lattice QCD; Lattice Quantum Field Theory",
abstract="We present a general method for deriving the energy shift of an interacting system of N spinless particles in a finite volume. To this end, we use the nonrelativistic effective field theory (NREFT), and match the pertinent low-energy constants to the scattering amplitudes. Relativistic corrections are explicitly included up to a given order in the 1/L expansion. We apply this method to obtain the ground state of N particles, and the first excited state of two and three particles to order L-6 in terms of the threshold parameters of the two- and three-particle relativistic scattering amplitudes. We use these expressions to analyze the N-particle ground state energy shift in the complex phi (4) theory.",
optnote="WOS:000617678000002",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4711), last updated on Wed, 03 Mar 2021 12:50:42 +0000",
issn="1029-8479",
doi="10.1007/JHEP02(2021)060",
opturl="https://arxiv.org/abs/2010.11715",
opturl="https://doi.org/10.1007/JHEP02(2021)060",
language="English"
}