Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1999-09-15
Nucl.Phys.Proc.Suppl. 83 (2000) 777-791
Physics
High Energy Physics
High Energy Physics - Lattice
15 pages,LATTICE99
Scientific paper
Numerical simulations of numerous quantum systems suffer from the notorious sign problem. Important examples include QCD and other field theories at non-zero chemical potential, at non-zero vacuum angle, or with an odd number of flavors, as well as the Hubbard model for high-temperature superconductivity and quantum antiferromagnets in an external magnetic field. In all these cases standard simulation algorithms require an exponentially large statistics in large space-time volumes and are thus impossible to use in practice. Meron-cluster algorithms realize a general strategy to solve severe sign problems but must be constructed for each individual case. They lead to a complete solution of the sign problem in several of the above cases.
Cox Jessica
Gattringer Christof
Holland Karen
Scarlet B.
Wiese Uwe-Jens
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