Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Initial State Independent Equilibration at the Breakdown of the
  Eigenstate Thermalization Hypothesis   This work aims at understanding the interplay between the Eigenstate
Thermalization Hypothesis (ETH), initial state independent equilibration and
quantum chaos in systems that do not have a direct classical counterpart. It is
based on numerical investigations of asymmetric Heisenberg spin ladders with
varied interaction strengths between the legs, i.e., along the rungs. The
relaxation of the energy difference between the legs is investigated. Two
different parameters, both intended to quantify the degree of accordance with
the ETH, are computed. Both indicate violation of the ETH at large interaction
strengths but at different thresholds. Indeed the energy difference is found
not to relax independently of its initial value above some critical interaction
strength which coincides with one of the thresholds. At the same point the
level statistics shift from Poisson-type to Wigner-type. Hence the system may
be considered to become integrable again in the strong interaction limit.

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The categories of this paper are: dg-ga
19
The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
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The categories of this paper are: funct-an
1
The categories of this paper are: cs