7.1. Input files for DSQSS/PMWA

In the input file of DSQSS/DLA and DSQSS/PMWA, there are many common parameters. In this section, the parameters which are not included in DSQSS/DLA or where the usage is different from DSQSS/DLA are explained.

• Parameters for calculation conditions

Parameter	type	default	description
RUNTYPE	int		Calculation mode (0: from scratch, 1: restart)
CB	int	0	Initial pattern (0: Vacuum, 1: Checker-Board, 2: Random)
NWORMAX	int	1000	The maximum number of worms. When the value is equal to be -1, the upper limit becomes infinity.
Step_x	int	1	The spatial width in calculating the correlation functions.
Step_k	int	1	The width of the wave-number space in calculating correlation functions of wave-number representation.

• Parameters related to the model

Parameter	type	description
t	double	\(t\) in boson system. \(J_{xy}\) in spin system.
U	double	\(U\) in boson system. This parameter is not used in spin system.
V	double	\(V\) in boson system. \(J_{z}\) in spin system.
MU	double	\(\mu\) in boson system. \(H\) in spin system.
G	double	\(\Gamma\) in boson system. \(\Gamma/2\) in spin system.
NMAX	-	This value is not used (always fixed to be 1).

An example of the input file is shown as follows:

RUNTYPE = 0
NSET  = 10
NMCS  = 1000
NPRE = 1000
NTHERM = 1000
NDECOR = 1000
SEED  = 31415
NC    = 0
NVERMAX = 10000000
NWORMAX = 1000
algfile   = algorithm.xml
latfile   = lattice.xml
outfile   = sample.log
CB      = 2
G       = 0.3
U       = 0
V       = 3
t       = 1
MU      = 2
NMAX    = 1