Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Skyrme effective pseudopotential up to next-to-next-to leading order   The explicit form of the next-to-next-to-leading order (N2LO) of the Skyrme
effective pseudopotential compatible with all required symmetries and
especially with gauge invariance is presented in Cartesian basis. It is shown
in particular that for such a particular pseudopotential there is no spin-orbit
contribution and that the D-wave term suggested in the original Skyrme's
formulation does not satisfy the invariance properties. The six new N2LO terms
contribute to both the equation of state and Landau parameters. These
contributions to symmetric nuclear matter are explicitly given and discussed.

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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin
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The categories of this paper are: cs
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: astro-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: eess
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The categories of this paper are: q-bio
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin