Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Geometrical Approach towards Entanglement   We have studied the concurrence of two-site entanglement and have shown that
it is related to the geometric phase accumulated due to a complete rotation of
the entangled state. The geometric phase and hence the concurrence is evaluated
for transverse Ising model and antiferromagnetic chain which is found to be in
good agreement with that obtained by other methods.

34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics