Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-temperature density matrix renormalization group using regulated
  polynomial expansion   We propose a density matrix renormalization group (DMRG) technique at finite
temperatures. As is the case of the ground state DMRG, we use a single-target
state that is calculated by making use of a regulated polynomial expansion.
Both static and dynamical quantities are obtained after a random-sampling and
averaging procedure. We apply this technique to the one-dimensional Hubbard
model at half filling and find that this gives excellent results at low
temperatures.

17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph