Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-scale Extensions to Quantum Cluster Methods for Strongly
  Correlated Electron Systems   A numerically implementable Multi-scale Many-Body approach to strongly
correlated electron systems is introduced. An extension to quantum cluster
methods, it approximates correlations on any given length-scale commensurate
with the strength of the correlations on the respective scale. Short
length-scales are treated explicitly, long ones are addressed at a mean-field
level and intermediate length-regime correlations are assumed to be weak and
are approximated diagrammatically. To illustrate and test this method, we apply
it to the one dimensional Hubbard model. The resulting multi-scale self-energy
provides a very good quantitative agreement with substantially more numerically
expensive, explicit Quantum Monte-Carlo calculations.

26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics