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1. $$ \mathcal{N} $$ = 1 S-fold spectroscopy

   https://doi.org/10.1007/JHEP08(2022)242  

   Cesàro, Mattia; Larios, Gabriel; Varela, Oscar (August 2022, Journal of High Energy Physics)

   A bstract We analyse the spectrum of Kaluza-Klein excitations above three distinct families of $$ \mathcal{N} $$ N = 1 AdS 4 solutions of type IIB supergravity of typically non-geometric, S-fold type that have been recently found. For all three families, we provide the complete algebraic structure of their spectra, including the content of OSp(4|1) multiplets at all Kaluza-Klein levels and their charges under the residual symmetry groups. We also provide extensive results for the multiplet dimensions using new methods derived from exceptional field theory, including complete, analytic results for one of the families. All three spectra show periodicity in the moduli that label the corresponding family of solutions. Finally, the compactness of these moduli is verified in some cases at the level of the fully-fledged type IIB uplifted solutions. 

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2. Minimal Ws,ns$$W^{s,\frac{n}{s}}$$‐harmonic maps in homotopy classes

   https://doi.org/10.1112/jlms.12769  

   Mazowiecka, Katarzyna; Schikorra, Armin (August 2023, Journal of the London Mathematical Society)

   Abstract Let a closed ‐dimensional manifold, be a closed manifold, and let for . We extend the monumental work of Sacks and Uhlenbeck by proving that if , then there exists a minimizing ‐harmonic map homotopic to . If , then we prove that there exists a ‐harmonic map from to in a generating set of . Since several techniques, especially Pohozaev‐type arguments, are unknown in the fractional framework (in particular, when , one cannot argue via an extension method), we develop crucial new tools that are interesting on their own: such as a removability result for point singularities and a balanced energy estimate for nonscaling invariant energies. Moreover, we prove the regularity theory for minimizing ‐maps into manifolds. 

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3. Branes and symmetries for N=3 S-folds

   https://doi.org/10.1007/JHEP09(2023)005  

   Etheredge, Muldrow; Etxebarria, Iñaki García; Heidenreich, Ben; Rauch, Sebastian (September 2023, Journal of High Energy Physics)

   We describe the higher-form and non-invertible symmetries of 4d N=3 S-folds using the brane dynamics of their holographic duals. In cases with enhancement to N=4 supersymmetry, our analysis reproduces the known field theory results of Aharony, Seiberg and Tachikawa, and is compatible with the effective action recently given by Bergman and Hirano. Likewise, for two specific N=3 theories for which Zafrir has conjectured N=1 Lagrangians our results agree with those implied by the Lagrangian description. In all other cases, our results imply novel predictions about the symmetries of the corresponding N=3 field theories. 

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4. Interrupted S _N Ar-Alkylation Dearomatization

   https://doi.org/10.1021/jacsau.3c00813  

   Altundas, Bilal; Marrazzo, John-Paul R.; Brinck, Tore; Absil, Christopher; Fleming, Fraser F. (February 2024, JACS Au)
5. Thermal Rearrangement of the S–N Bond of Thiooxime Esters

   https://doi.org/10.1021/acs.joc.4c01571  

   Wall, Brendan J; Byerly-Duke, Jacob; VanVeller, Brett (October 2024, The Journal of Organic Chemistry)