Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Manifestly Lorentz-Invariant Baryon Chiral Perturbation Theory   A successful effective field theory program requires besides the most general
effective Lagrangian a perturbative expansion scheme for observables in terms
of a consistent power counting method. We discuss a renormalization scheme for
manifestly Lorentz-invariant baryon chiral perturbation theory generating a
simple and consistent power counting for renormalized diagrams. The approach
may be used in an iterative procedure to renormalize higher-order loop diagrams
and also allows for implementing a consistent power counting when vector mesons
are explicitly included.

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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: stat
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg