Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exact calculation of disconnected loops   We present an implementation of the disconnected diagram contributions to
quantities such as the flavor-singlet pseudoscalar meson mass which are
accelerated by GPGPU technology utilizing the NVIDIA CUDA platform. To enable
the exact evaluation of the disconnected loops we use a $16^3 \times 32$
lattice and $N_f=2$ Wilson fermions simulated by the SESAM Collaboration. The
disconnected loops are also computed using stochastic methods with several
noise reduction techniques.
  In particular, we analyze various dilution schemes as well as the recently
proposed truncated s olver method. We find consistency among the different
methods used for the determination of the $\eta^\prime$ mass, albeit that the
gauge noise for the ensemble studied is large. We also find that the effect of
'dilution' d oes not go beyond that of optimal statistical noise in many cases.
It has been observed, however, that spin dilution does have a significant
effect for some quantities studied.

35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph