Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NRQCD and Static Systems -- A General Variational Approach   We present initial results from Monte Carlo simulations of NRQCD-light,
static-light, and NRQCD-NRQCD mesons, using a variational technique (MOST), as
part of our ongoing calculation of the $f_{B}$ decay constant. The basis states
for the variational calculation are quark-antiquark operators separated by all
possible relative distances not equivalent under the cubic group (for example,
for a $20^{3}$ lattice there are 286 operators). The efficacy of the method is
demonstrated by the good plateaus obtained for the ground state and the clean
extraction of the wave functions of the ground and first radially excited
state.

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The categories of this paper are: stat
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The categories of this paper are: econ
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int