Results below are obtained by fitting individual, but optimized, correlators
to a sum of two exponentials. The fit results are indicated in the
effective mass plots by horizontal lines. In the first set of raw results below,
the solid circles shown with error bars in the plots are standard effective mass
points associated with the optimized correlators. The open symbols correspond to
principal effective mass values as defined by
Eq. (5.18)
in
Luscher and Wolff, Nucl.Phys.B339, 222 (1990)
such that the lowest N effective
masses tend to the lowest N physical masses as the temporal separation
becomes large. Note that the correlation functions themselves are used in
the fitting, not the effective mass points which are included for illustrative
purposes and as checks of the fitting results.
In the second set of raw gap results below, all points with error bars correspond to
principal effective mass points.
Entries below shown in red indicate energies lying higher than one glueball mass
above the ground state; entries shown in amber indicate fits with quality factor
Q<0.1.
In this run, the glueball mass in inverse temporal lattice spacings is approximately
0.345. |
