Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finite-Temperature Phase Diagram of Quasi-One-Dimensional Molecular
  Conductors: Quantum Monte Carlo Study   Finite-temperature phase transitions in quasi-one-dimensional quarter-filled
systems are investigated by the extended Hubbard model with electron-lattice
coupling. Using a quantum Monte Carlo method combined with the inter-chain
mean-field approximation, we clarify competing and coexisting behaviors among
charge ordering, dimer Mott, and spin-Peierls states. It is pointed out that an
anharmonicity of lattice distortions plays an important role in multi-critical
behaviors. The results are compared with experimental data for
quasi-one-dimensional molecular conductors such as DCNQI and TMTTF compounds.

35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys