Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Applications of Cluster Perturbation Theory Using Quantum Monte Carlo
  Data   We study cluster perturbation theory [Phys. Rev. Lett. \textbf{84}, 522
(2000)] when auxiliary field quantum Monte Carlo method is used for solving the
cluster hamiltonian. As a case study, we calculate the spectral functions of
the Hubbard model in one and two dimensions and compare our results for the
spectral functions to results obtained using exact diagonalization to solve the
cluster hamiltonian. The main advantage of using quantum Monte Carlo results as
a starting point is that the initial cluster size can be taken to be
considerably larger and hence potentially capture more of the relevant physics.
The drawback is that quantum Monte Carlo methods yield results at {\it
imaginary} times with stochastic errors.

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The categories of this paper are: eess
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
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The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
3
The categories of this paper are: physics
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The categories of this paper are: econ
1
The categories of this paper are: cs
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin