Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement entropy at CFT junctions   We consider entanglement through permeable junctions of $N$
$(1+1)$-dimensional free boson and free fermion conformal field theories. In
the folded picture we constrain the form of the general boundary state. We
calculate replicated partition functions with interface operators inserted in
the partially-folded picture, from which the entanglement entropy is
calculated. The functional form of the universal and constant terms are the
same as the $N=2$ case, depending only of the total transmission of the
junction and the unit volume of the zero mode lattice. For $N>2$ we see a
sub-leading divergent term which does not depend on the parameters of the
junction. For $N=3$ we consider some specific geometries and discuss various
limits.

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The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: plasm-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
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The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
25
The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
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The categories of this paper are: stat