Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modifying partition functions: a way to solve the sign problem   A possible method to solve the sign problem is developed by modifying the
original theory. Considering several modifications of the partition function,
the observable in the original theory is reconstructed from the identity
connecting the observables in the original and modified theories. We
demonstrate that our method gives the correct results even if the original
theory has the severe sign problem by using a simple 1-dimensional integral.

27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom