Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Several new actions of $p$-branes based on bulk scalar fields   Generally, $p$-branes play central roles in revealing the nonperturbative
structures of the string/M-theory. In this paper, through a topological tensor
current constructed in terms of a bulk scalar field, we first show some
topological properties of $p$-branes, and then mainly discuss the construction
of several new actions of $p$-branes. We show that the actions we construct
which can be reduced to the Nambu-Goto action or some other simple actions, are
all defined naturally in the bulk spacetime, preserving the full spacetime
Lorentz invariance and satisfying a self-dual condition.

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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: eess
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg
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The categories of this paper are: physics