Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Representation of complex probabilities and complex Gibbs sampling   Complex weights appear in Physics which are beyond a straightforward
importance sampling treatment, as required in Monte Carlo calculations. This is
the well-known sign problem. The complex Langevin approach amounts to
effectively construct a posi\-tive distribution on the complexified manifold
reproducing the expectation values of the observables through their analytical
extension. Here we discuss the direct construction of such positive
distributions paying attention to their localization on the complexified
manifold. Explicit localized repre\-sentations are obtained for complex
probabilities defined on Abelian and non Abelian groups. The viability and
performance of a complex version of the heat bath method, based on such
representations, is analyzed.

28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph