期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 11, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP11(2013)158
关键词
Field Theories in Lower Dimensions; Lattice Gauge Field Theories
资金
- EU through SIQS grant [FP7 600645]
- Foundation for Polish Science fellowship Kolumb
- DFG [Sonderforschungsbereich/Transregio SFB/TR9]
- Cyprus Research Promotion Foundation [PiPOSigmaELambdaKYSigmaH/EMPiEIPOSigma/0311/16]
We show the feasibility of tensor network solutions for lattice gauge theories in Hamiltonian formulation by applying matrix product states algorithms to the Schwinger model with zero and non-vanishing fermion mass. We introduce new techniques to compute excitations in a system with open boundary conditions, and to identify the states corresponding to low momentum and different quantum numbers in the continuum. For the ground state and both the vector and scalar mass gaps in the massive case, the MPS technique attains precisions comparable to the best results available from other techniques.
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