Colliding Singularities in F-theory and Phase Transitions

Details Colliding Singularities in F-theory and Phase Transitions Colliding Singularities in F-theory and Phase Transitions

1996-10-16

arxiv.org/abs/hep-th/9610111v2

Nucl.Phys. B489 (1997) 122-138

Physics

High Energy Physics

High Energy Physics - Theory

harvmac tex, 19 pages, minor misprints are corrected, the section on SO(*)xSO(*) is extended, the discussion on small instanto

Scientific paper

10.1016/S0550-3213(97)00027-8

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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