Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective photon mass from black-hole formation   We compute the value of effective photon mass $m_\gamma$ at one-loop level in
QED in the background of small ($10^{10}\,\text{g} \lesssim M \ll
10^{16}\,\text{g}$) spherically symmetric black hole in asymptotically flat
spacetime. This effect is associated with the modification of electron/positron
propagator in presence of event horizon. Physical manifestations of black-hole
environment are compared with those of hot neutral plasma. We estimate the
distance to the nearest black hole from the upper bound on $m_\gamma$ obtained
in the Coulomb-law test. We also find that corrections to electron mass $m_e$
and fine structure constant $\alpha$ at one-loop level in QED are negligible in
the weak gravity regime.

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The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
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The categories of this paper are: patt-sol
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The categories of this paper are: q-bio
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: hep-ph
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The categories of this paper are: cs
34
The categories of this paper are: chem-ph