出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We propose to stabilise HMC simulations of lattice QCD with very light Wilson quarks by splitting
the quark determinant into two factors and by treating the factor that includes the contribution
of the low modes of the Dirac operator as a reweighting factor. In general, determinant reweighting
becomes inefficient on large lattices, because the statistical fluctuations of quark determinants
increase exponentially with the lattice volume. Random matrix theory and some numerical studies
now suggest that the low-mode contribution to the determinant behaves differently, which allows
factorisations to be devised that preserve the efficiency of the simulation on large lattices.
