Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lack of Evidence for a Singlet Crystal Field Ground State in the
  Tb2Ti2O7 Magnetic Pyrochlore   We present new high resolution inelastic neutron scattering data on the
candidate spin liquid Tb2Ti2O7. We find that there is no evidence for a zero
field splitting of the ground state doublet within the 0.2 K resolution of the
instrument. This result contrasts with a pair of recent works on Tb2Ti2O7
claiming that the spin liquid behavior can be attributed to a 2 K split
singlet-singlet single-ion spectrum at low energies. We also reconsider the
entropy argument presented in Chapuis {\it et al.} as further evidence of a
singlet-singlet crystal field spectrum. We arrive at the conclusion that
estimates of the low temperature residual entropy drawn from heat capacity
measurements are a poor guide to the single ion spectrum without understanding
the nature of the correlations.

12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess