Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Colliding Singularities in F-theory and Phase Transitions   We study F-theory on elliptic threefold Calabi-Yau near colliding
singularities. We demonstrate that resolutions of those singularities
generically correspond to transitions to phases characterized by new tensor
multiplets and enhanced gauge symmetry. These are governed by the dynamics of
tensionless strings. We also find new transition points which are associated
with several small instantons simultaneously shrinking to zero size.

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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: econ
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The categories of this paper are: physics
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The categories of this paper are: dg-ga