Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Path integral contour deformations for observables in $SU(N)$ gauge
  theory   Path integral contour deformations have been shown to mitigate sign and
signal-to-noise problems associated with phase fluctuations in lattice field
theories. We define a family of contour deformations applicable to $SU(N)$
lattice gauge theory that can reduce sign and signal-to-noise problems
associated with complex actions and complex observables. For observables, these
contours can be used to define deformed observables with identical expectation
value but different variance. As a proof-of-principle, we apply machine
learning techniques to optimize the deformed observables associated with Wilson
loops in two dimensional $SU(2)$ and $SU(3)$ gauge theory. We study loops
consisting of up to 64 plaquettes and achieve variance reduction of up to 4
orders of magnitude.

21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph