Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gauge fields of the matrix Dirac equation   We introduce an equation named matrix Dirac equation which can be considered
as a generalization of Dirac equation for an electron. The liaison between
matrix Dirac equation and standard Dirac equation is discussed. We write a
lagrangian from which matrix Dirac equation can be derived. This lagrangian is
invariant under global unitary transformations of variables. The requirement of
a local (gauge) invariance of lagrangian leads us to lagrangian with gauge
fields.

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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
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The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio