Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimal Spin Squeezed Steady State induced by the dynamics of
  non-hermtian hamiltonians   In this work, we study the time evolution of a coherent spin state under the
action of a non-hermitian hamiltonian. The hamiltonian is modeled by a one-axis
twisting term plus a Lipkin-type interaction. We show that when the Lipkin
interaction is switched on, depending on the relative values of the coupling
constants, the initial state evolves into a steady squeezed state which
minimizes the Uncertainty Relations, Intelligent Spin State. We apply this
result to look for the generation of an steady intelligent spin state from an
ensemble of nitrogen vacancy colour centers in diamond coupled to a mechanical
resonator.

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The categories of this paper are: nlin
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
34
The categories of this paper are: chem-ph