Surface defect indices and 2d-4d BPS states
Abstract
We conjecture a formula for the Schur index of four-dimensional N=2 theories coupled to (2, 2) surface defects in terms of the 2d-4d BPS spectrum in the Coulomb phase of the theory. The key ingredient in our conjecture is a refined 2d-4d wall-crossing invariant, which we also formulate. Our result intertwines recent conjectures expressing the four-dimensional Schur index in terms of infrared BPS particles, with the Cecotti-Vafa formula for limits of the elliptic genus in terms of two-dimensional BPS solitons. We extend our discussion to framed 2d-4d BPS states, and use this to demonstrate a general relationship between surface defect indices and line defect indices. We illustrate our results in the example of su(2) super Yang-Mills coupled to the CP1 sigma model defect.
- Authors:
-
- Inst. for Advanced Study, Princeton, NJ (United States). School of Natural Sciences
- Perimeter Inst. for Theoretical Physics, Waterloo, ON (Canada)
- Publication Date:
- Research Org.:
- Institute for Advanced Study, Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1502495
- Grant/Contract Number:
- SC0009988
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 12; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Conformal and W Symmetry; Supersymmetric Gauge Theory
Citation Formats
Córdova, Clay, Gaiotto, Davide, and Shao, Shu-Heng. Surface defect indices and 2d-4d BPS states. United States: N. p., 2017.
Web. doi:10.1007/jhep12(2017)078.
Córdova, Clay, Gaiotto, Davide, & Shao, Shu-Heng. Surface defect indices and 2d-4d BPS states. United States. https://doi.org/10.1007/jhep12(2017)078
Córdova, Clay, Gaiotto, Davide, and Shao, Shu-Heng. Thu .
"Surface defect indices and 2d-4d BPS states". United States. https://doi.org/10.1007/jhep12(2017)078. https://www.osti.gov/servlets/purl/1502495.
@article{osti_1502495,
title = {Surface defect indices and 2d-4d BPS states},
author = {Córdova, Clay and Gaiotto, Davide and Shao, Shu-Heng},
abstractNote = {We conjecture a formula for the Schur index of four-dimensional N=2 theories coupled to (2, 2) surface defects in terms of the 2d-4d BPS spectrum in the Coulomb phase of the theory. The key ingredient in our conjecture is a refined 2d-4d wall-crossing invariant, which we also formulate. Our result intertwines recent conjectures expressing the four-dimensional Schur index in terms of infrared BPS particles, with the Cecotti-Vafa formula for limits of the elliptic genus in terms of two-dimensional BPS solitons. We extend our discussion to framed 2d-4d BPS states, and use this to demonstrate a general relationship between surface defect indices and line defect indices. We illustrate our results in the example of su(2) super Yang-Mills coupled to the CP1 sigma model defect.},
doi = {10.1007/jhep12(2017)078},
journal = {Journal of High Energy Physics (Online)},
number = 12,
volume = 2017,
place = {United States},
year = {Thu Dec 14 00:00:00 EST 2017},
month = {Thu Dec 14 00:00:00 EST 2017}
}
Web of Science
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