We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Quantum line defects and refined BPS spectra.
- Authors
Cirafici, Michele
- Abstract
In this note, we study refined BPS invariants associated with certain quantum line defects in quantum field theories of class S . Such defects can be specified via geometric engineering in the UV by assigning a path on a certain curve. In the IR, they are described by framed BPS quivers. We study the associated BPS spectral problem, including the spin content. The relevant BPS invariants arise from the K-theoretic enumerative geometry of the moduli spaces of quiver representations, adapting a construction by Nekrasov and Okounkov. In particular, refined framed BPS states are described via Euler characteristics of certain complexes of sheaves.
- Subjects
QUANTUM defect theory; QUANTUM field theory; EULER characteristic; REPRESENTATION theory; INSTANTONS
- Publication
Letters in Mathematical Physics, 2020, Vol 110, Issue 3, p501
- ISSN
0377-9017
- Publication type
Article
- DOI
10.1007/s11005-019-01226-3