Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diagrammatics of the Dimensionally Reduced Action in phi^4 theory   We describe the Feynman rules for the construction of the Dimensionally
Reduced Action (DRA) for a phi^4 field theory, as well as rules for the
construction of the connected Green functions and the Dimensionally Reduced
Effective Action (DREA), the effective action obtained from the DRA. Two and
four-point connected Green functions are calculated to illustrate the
application of those rules, and to exhibit the subtraction of UV divergences.
As the DRA formalism expands about a background field, instead of the high
temperature expansion obtained in the usual dimensional reduced field theory,
we derive an expansion that is defined for all range of temperatures. We make a
low temperature analysis of the DREA by considering soft modes. In particular,
we study the case of near zero mass.

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The categories of this paper are: q-bio
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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: q-alg
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The categories of this paper are: astro-ph
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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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: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: ao-sci