Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability of the Hydrogen and Hydrogen-like Molecules   We present a simple proof of the stability of the hydrogen molecule
$(M^+M^+m^-m^-)$. It does not rely on the proton-to-electron mass ratio $M/m$
being very large, and actually holds for arbitrary values of $M/m$. Some
asymmetric molecules of the type $(m_1^+m_2^+m_3^-m_4^-)$ are also stable.
Possible applications to molecules containing antiparticles and to exotic
hadrons in the quark model are briefly outlined. Revtex Version 3.0, 4 Figures
available on request by Fax or Mail.

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The categories of this paper are: eess
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: gr-qc
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The categories of this paper are: q-bio