Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Classical Conformal Blocks and Accessory Parameters from Isomonodromic
  Deformations   Classical conformal blocks naturally appear in the large central charge limit
of 2D Virasoro conformal blocks. In the $AdS_{3}/CFT_{2}$ correspondence, they
are related to classical bulk actions and are used to calculate entanglement
entropy and geodesic lengths. In this work, we discuss the identification of
classical conformal blocks and the Painlev\'e VI action showing how
isomonodromic deformations naturally appear in this context. We recover the
accessory parameter expansion of Heun's equation from the isomonodromic
$\tau$-function. We also discuss how the $c = 1$ expansion of the
$\tau$-function leads to a novel approach to calculate the 4-point classical
conformal block.

15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat