Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Covariant and background independent functional RG flow for the
  effective average action   We extend our prescription for the construction of a covariant and
background-independent effective action for scalar quantum field theories to
the case where momentum modes below a certain scale are suppressed by the
presence of an infrared regulator. The key step is an appropriate choice of the
infrared cutoff for which the Ward identity, capturing the information from
single-field dependence of the ultraviolet action, continues to be exactly
solvable, and therefore, in addition to covariance, manifest background
independence of the effective action is guaranteed at any scale. A practical
consequence is that in this framework one can adopt truncations dependent on
the single total field. Furthermore we discuss the necessary and sufficient
conditions for the preservation of symmetries along the renormalization group
flow.

37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio