Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Density Matrix Recursion Method: Genuine Multisite Entanglement
  Distinguishes Odd from Even Quantum Heisenberg Ladders   We introduce an analytical iterative method, the density matrix recursion
method, to generate arbitrary reduced density matrices of superpositions of
short-range dimer coverings on periodic or non-periodic quantum spin-1/2 ladder
lattices, with an arbitrary number of legs. The method can be used to calculate
bipartite as well as multipartite physical properties, including bipartite and
multi-partite entanglement. We apply this technique to distinguish between
even- and odd-legged ladders. Specifically, we show that while genuine
multi-partite entanglement decreases with increasing system size for the
even-legged ladder states, it does the opposite for odd-legged ones.

15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int