Publisher： Edp Sciences
E-ISSN： 2100-014x|175|issue|11006-11006
ISSN： 2100-014x
Source： EPJ Web of Conference, Vol.175, Iss.issue, 2018-03, pp. : 11006-11006
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Abstract
The three-particle quantization condition is derived, using the particle-dimer picture in the non-relativistic effective field theory. The procedure for the extraction of various observables in the three-particle sector (the particle-dimer scattering amplitudes, breakup amplitudes, etc.) from the finite-volume lattice spectrum is discussed in detail. As an illustration of the general formalism, the expression for the finite-volume energy shift of the three-body bound-state in the unitary limit is re-derived. The role of the threebody force, which is essential for the renormalization, is highlighted, and the extension of the result beyond the unitary limit is studied. Comparison with other approaches, known in the literature, is carried out.
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