Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scale Invariant Resummed Perturbation at Finite Temperatures   We use the scalar model with quartic interaction to illustrate how a
nonperturbative variational technique combined with renormalization group (RG)
properties efficiently resums perturbative expansions in thermal field
theories. The resulting convergence and scale dependence of optimized
thermodynamical quantities, here illustrated up to two-loop order, are
drastically improved as compared to standard perturbative expansions, as well
as to other related methods such as the screened perturbation or (resummed)
hard-thermal-loop perturbation, that miss RG invariance as we explain. Being
very general and easy to implement, our method is a potential analytical
alternative to deal with the phase transitions of field theories such as
thermal QCD.

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The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
3
The categories of this paper are: physics
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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: atom-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
14
The categories of this paper are: math-ph