Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical pruning of the multiconfiguration time-dependent Hartree
  method (DP-MCTDH): An efficient approach for multidimensional quantum
  dynamics   We present two strategies for combining dynamical pruning with the
multiconfiguration time-dependent Hartree method (DP-MCTDH), where dynamical
pruning means on-the-fly selection of relevant basis functions. The first
strategy prunes the primitive basis that represents the single-particle
functions (SPFs). This is useful for smaller systems that require many
primitive basis functions per degree of freedom, as we will illustrate for
NO$_2$. Furthermore, this allows for higher-dimensional mode combination and
partially lifts the sum-of-product-form requirement onto the structure of the
Hamiltonian, as we illustrate for nonadiabatic 24-dimensional pyrazine. The
second strategy prunes the set of configurations of SPF at each time step. We
show that this strategy yields significant speed-ups with factors between 5 and
50 in computing time, making it competitive with the multilayer MCTDH method.

15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th