Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient emulators for scattering using eigenvector continuation   Eigenvector continuation EC has been shown to accurately and efficiently
reproduce ground states for targeted sets of Hamiltonian parameters. It uses as
variational basis vectors the corresponding ground-state eigensolutions from
selected other sets of parameters. Here we extend the EC approach to scattering
using the Kohn variational principle. We first test it using a model for S-wave
nucleon-nucleon scattering and then demonstrate that it also works to give
accurate predictions for non-local potentials, charged-particle scattering,
complex optical potentials, and higher partial waves. These proofs-of-principle
validate EC as an accurate emulator for applying Bayesian inference to
parameter estimation constrained by scattering observables. The efficiency of
such emulators is because the accuracy is achieved with a small number of
variational basis elements and the central computations are just linear algebra
calculations in the space spanned by this basis.

29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
19
The categories of this paper are: eess
9
The categories of this paper are: nlin