Connecting localization and wall-crossing via D-branes

Chih-Kai Chang (Department of Physics, Center for Theoretical Sciences, National Taiwan University, Taipei, Taiwan; Department of Physics, University of Chicago, Chicago, USA) ; Heng-Yu Chen (Department of Physics, Center for Theoretical Sciences, National Taiwan University, Taipei, Taiwan) ; Dharmesh Jain (Department of Physics, Center for Theoretical Sciences, National Taiwan University, Taipei, Taiwan; Theory Division, Saha Institute of Nuclear Physics, Kolkata, India) ; Norton Lee (Department of Physics, Center for Theoretical Sciences, National Taiwan University, Taipei, Taiwan; Department of Physics and Astronomy, Stony Brook University, Stony Brook, USA)

We demonstrate explicitly that the vacuum expectation values (vevs) of BPS line operators in 4d N=2 super Yang–Mills theory compactified on a circle, computed by localization techniques, can be expanded in terms of Darboux coordinates as proposed by Gaiotto, Moore, and Neitzke [1]. However, we need to augment the expressions for Darboux coordinates with additional monopole bubbling contributions to obtain a precise match. Using D-brane realization of these singular BPS line operators, we derive and incorporate the monopole bubbling contributions as well as predict the degeneracies of framed BPS states contributing to the line operator vevs in the limit of vanishing simultaneous spatial and R-symmetry rotation fugacity parameter.

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      "surname": "Chen", 
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      "value": "We demonstrate explicitly that the vacuum expectation values (vevs) of BPS line operators in 4d <math><mi>N</mi><mo>=</mo><mn>2</mn></math> super Yang\u2013Mills theory compactified on a circle, computed by localization techniques, can be expanded in terms of Darboux coordinates as proposed by Gaiotto, Moore, and Neitzke [1]. However, we need to augment the expressions for Darboux coordinates with additional monopole bubbling contributions to obtain a precise match. Using D-brane realization of these singular BPS line operators, we derive and incorporate the monopole bubbling contributions as well as predict the degeneracies of framed BPS states contributing to the line operator vevs in the limit of vanishing simultaneous spatial and R-symmetry rotation fugacity parameter."
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Published on:
17 May 2018
Publisher:
Elsevier
Published in:
Nuclear Physics B , Volume 932 C (2018)

Pages 298-322
DOI:
https://doi.org/10.1016/j.nuclphysb.2018.05.011
Copyrights:
The Author(s)
Licence:
CC-BY-3.0

Fulltext files: