Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fermionic trimers in spin-dependent optical lattices   We investigate the formation of three-body bound states (trimers) in
two-component Fermi gases confined in one dimensional optical lattice with
spin-dependent tunneling rates. The binding energy and the effective mass of
the trimer are obtained from the solution of the Mattis integral equation
generalized to the case of unequal Bloch masses. We show that this equation
admits multiple solutions corresponding to excited bound states, which are only
stable for large mass asymmetry.

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The categories of this paper are: hep-ph
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The categories of this paper are: econ
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: stat
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The categories of this paper are: math-ph
1
The categories of this paper are: cs
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int