Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dual partitioning for effective Hamiltonians to avoid intruders   We present a new Hamiltonian partitioning which converges an arbitrary number
of states of interest in the effective Hamiltonian to the full configuration
interaction limits simultaneously. This feature is quite useful for the
recently developed model space quantum Monte Carlo. A dual partitioning (DP)
technique is introduced to avoid the intruder state problem present in the
previous eigenvalue independent partitioning of Coope. The new approach is
computationally efficient and applicable to general excited states involving
conical intersections. We present a preliminary application of the method to
model systems to investigate the performance.

6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg