期刊
PHYSICAL REVIEW D
卷 88, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.014501
关键词
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资金
- U.S. Department of Energy, under which Jefferson Science Associates [DE-AC05-06OR23177]
- U.S. Department of Energy [DE-SC0006765, DE-FG0287ER40365]
- U.S. Department of Energy (DOE) [DE-SC0006765] Funding Source: U.S. Department of Energy (DOE)
Based on the Hamiltonian formalism approach, a generalized Luscher's formula for two-particle scattering in both the elastic and coupled-channel cases in moving frames is derived from a relativistic Lippmann-Schwinger equation. Some strategies for extracting scattering amplitudes for a coupled-channel system from the discrete finite-volume spectrum are discussed and illustrated with a toy model of two-channel resonant scattering. This formalism will, in the near future, be used to extract information about hadron scattering from lattice quantum chromodynamics computations.
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