出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present a detailed design of a (P)HMC simulation algorithm for Nf = 2+1+1 maximally
twisted Wilson quark avours. The algorithm retains even/odd and mass-shift preconditioning
combined with multiple Molecular Dynamics time scales for both the light mass degenerate, u and
d, quarks and the heavy mass non-degenerate, s and c, quarks. Various non-standard aspects of the
algorithm are discussed, among which those connected to the use of a polynomial approximation
for the inverse (square root of the squared) Dirac matrix in the s and c quark sector.
