Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Casimir energy in the gauge/gravity description of Bjorken flow?   In the AdS/CFT description of four-dimensional QCD matter undergoing Bjorken
expansion, does the holographic energy-momentum tensor contain a Casimir-type
contribution that should not be attributed to thermal matter? When the bulk
isometry ansatz that yielded such a Casimir term for (1+1)-dimensional boundary
matter is generalised to a four-dimensional boundary, we show that a Casimir
term does not arise, owing to singularities in the five-dimensional bulk
solution. The geometric reasons are traced to a difference between the
isometries of AdS_3 and AdS_{d+1} for d>=3.

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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
18
The categories of this paper are: econ