Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "Frustrating interactions and broadened magnetic interactions
  in the edge-sharing CuO_2 chains in La_5 Ca_9 Cu_24 O_41"   Using Monte Carlo techniques, we show that the two--dimensional anisotropic
Heisenberg model reproducing nicely inelastic neutron scattering measurements
on La_5 Ca_9 Cu_24 O_41 (Matsuda et al. [Phys. Rev. B 68, 060406(R) (2003)])
seems to be insufficient to describe correctly measurements on thermodynamic
quantities like the magnetization or the susceptibility. Possible reasons for
the discrepancy are suggested.

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The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc