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Orthosymplectic Chern-Simons Matter Theories: Global Forms, Dualities, and Vacua
by Fabio Marino, Sinan Moura Soysüren, Marcus Sperling
Submission summary
| Authors (as registered SciPost users): | Fabio Marino · Marcus Sperling |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2509.11733v1 (pdf) |
| Date submitted: | Oct. 21, 2025, 4:24 p.m. |
| Submitted by: | Marcus Sperling |
| Submitted to: | SciPost Physics |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
The author(s) disclose that the following generative AI tools have been used in the preparation of this submission:
A large language model (LLM) was used solely to improve the grammar and language of the manuscript. No AI or LLM tools were used in generating or interpreting scientific content: all ideas, equations, figures, and computations are the sole work of the authors. Additionally, no generative AI was used for literature review, data analysis, or citation generation.
Abstract
A magnetic quiver framework is proposed for studying maximal branches of 3d orthosymplectic Chern-Simons matter theories with $\mathcal{N} \geq 3$ supersymmetry, arising from Type IIB brane setups with O3 planes. These branches are extracted via brane moves, yielding orthosymplectic $\mathcal{N}=4$ magnetic quivers whose Coulomb branches match the moduli spaces of interest. Global gauge group data, inaccessible from brane configurations alone, are determined through supersymmetric indices, Hilbert series, and fugacity maps. The analysis is exploratory in nature and highlights several subtle features. In particular, magnetic quivers are proposed as predictions for the maximal branches in a range of examples. Along the way, dualities and structural puzzles are uncovered, reminiscent of challenges in 3d mirror symmetry with orientifolds.
Author indications on fulfilling journal expectations
- Provide a novel and synergetic link between different research areas.
- Open a new pathway in an existing or a new research direction, with clear potential for multi-pronged follow-up work
- Detail a groundbreaking theoretical/experimental/computational discovery
- Present a breakthrough on a previously-identified and long-standing research stumbling block
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Requested changes
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In Example 1 of Section 5, the authors state:
If one tries to move ... all the way to the left (or all the way to the right), the putative magnetic quivers fail to match the NS5-branch limit of the CSM index.'' However, the problematic magnetic quivers arising from such moves are not explicitly shown. While the authors provide the correct magnetic quiver in (5.2), I recommend that they also explicitly present the specific quivers that fail. This would be highly instructive for future work, helping readers understand why such brane moves do not yield thecorrect'' result. The same recommendation applies to Example 2. -
In (5.2), the magnetic quiver contains a half-hypermultiplet in the representation $(2N, 2M)$ of $SO(2N) \times SO(2M)$. To clarify the contribution of such matter, it would be useful for the authors to explicitly write down the conformal dimension of the monopole operators in the monopole formula used to compute the Coulomb branch Hilbert series of (5.2). This request also applies to the half-hypermultiplet in the representation $(2N, 2M)$ of $Sp(N) \times Sp(M)$ in (5.4).
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Ask for minor revision