sim.toml

# Input file to reproduce results of
#
# M. Luscher. "Properties and uses of the Wilson flow in Lattice QCD"
# https://arxiv.org/pdf/1006.4518.pdf
# (see table 1)

[Run]
user    = "croldan"
host    = "ciclope2"
name    = "BOTH44x44x44x44"
dat     = "./dat"
log     = "./log"
cfg     = "./cfg"
seed    = 20220802
loadcfg = false

[Simulation]
group      = "SU3" # SU2 / SU3
dimensions = 4
size       = [44,44,44,44]
blocks     = [4,4,4,4]
action     = "WILSON" # WILSON / IMPROVED
flow       = "BOTH" # WILSON / ZEUTHEN / BOTH
beta       = 6.35

[Boundary]
type   = "PERIODIC" # PERIODIC / SF
ntwist = [0,0,0,0,0,0]
cG     = 1.0 # Correction for boundaries (SF only)
phi0   = [0.0, 0.0] # Boundary fields (time = 0) (SF only)
phiT   = [0.0, 0.0] # Boundary fields (time = T) (SF only)

[HMC]
nth        = 1000 # Number of thermalization steps
ntr        = 41000 # Total MC trajectory length
dtr_log    = 100
dtr_ms     = 100
dtr_cfg    = 1000
nstep      = 20 # Integrator number of steps
eps        = 0.1 # Integrator step size
integrator = "OMF4" # "LEAPFROPG" / "OMF2" / "OMF4"

[Flow]
ntot       = 1600 # Maximum number of flow steps (0:maxflw)
dnms       = 1
eps        = 0.01 # Flow step size
integrator = "RK3" # EULER / RK2 / RK3