Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extracting Low-Lying Lambda Resonances Using Correlation Matrix
  Techniques   The lowest-lying negative-parity state of the Lambda is investigated in
(2+1)-flavour full-QCD on the PACS-CS configurations made available through the
ILDG. We show that a variational analysis using multiple source and sink
smearings can extract a state lying lower than that obtained by using a
standard fixed smeared source and sink operator alone.

2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex