Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Incorporating Berry Force Effects into The Fewest Switches Surface
  Hopping Algorithm: Intersystem Crossing and The Case of Electronic Degeneracy   We present a preliminary surface-hopping approach for modeling intersystem
crossing (ISC) dynamics between four electronic states: one singlet and one
(triply degenerate) triplet. In order to incorporate all Berry force effects,
the algorithm requires that, when moving along an adiabatic surface associated
with the triplet manifold, \mycomment{one must also keep track of a
quasi-diabatic index (akin to a "$m_s$" quantum number) for each trajectory.
For a simple model problem, we find that a great deal of new physics can be
captured by our algorithm, setting the stage for larger, more realistic (or
perhaps even {\em ab initio}) simulations in the future.

31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ