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Evolving Heterotic Gauge Backgrounds: Genetic Algorithms versus Reinforcement Learning (2022)
Journal Article
Abel, S., Constantin, A., Harvey, T. R., & Lukas, A. (2022). Evolving Heterotic Gauge Backgrounds: Genetic Algorithms versus Reinforcement Learning. Fortschritte der Physik, 70(5), Article 2200034. https://doi.org/10.1002/prop.202200034

The immensity of the string landscape and the difficulty of identifying solutions that match the observed features of particle physics have raised serious questions about the predictive power of string theory. Modern methods of optimisation and searc... Read More about Evolving Heterotic Gauge Backgrounds: Genetic Algorithms versus Reinforcement Learning.

Higher-dimensional symmetry of AdS2×S2 correlators (2022)
Journal Article
Abl, T., Heslop, P., & Lipstein, A. E. (2022). Higher-dimensional symmetry of AdS2×S2 correlators. Journal of High Energy Physics, 2022(3), Article 76. https://doi.org/10.1007/jhep03%282022%29076

It was recently shown that IIB supergravity on AdS5×S5 enjoys 10d conformal symmetry and that superstring theory on this background can be described using a 10d scalar effective field theory. In this paper we adapt these two complementary approaches... Read More about Higher-dimensional symmetry of AdS2×S2 correlators.

Magnetic Winding as an Indicator of Flare Activity in Solar Active Regions (2022)
Journal Article
Raphaldini, B., Prior, C. B., & MacTaggart, D. (2022). Magnetic Winding as an Indicator of Flare Activity in Solar Active Regions. Astrophysical Journal, 927(2), Article 156. https://doi.org/10.3847/1538-4357/ac4df9

Magnetic helicity is a measure of the entanglement of magnetic field lines used to characterize the complexity of solar active region (AR) magnetic fields. Previous attempts to use helicity-based indicators to predict solar eruptive/flaring events ha... Read More about Magnetic Winding as an Indicator of Flare Activity in Solar Active Regions.

The benefits of Cu Kβ radiation for the single-crystal X-ray structure determination of crystalline sponges (2022)
Journal Article
Meurer, F., von Essen, C., Kühn, C., Puschmann, H., & Bodensteiner, M. (2022). The benefits of Cu Kβ radiation for the single-crystal X-ray structure determination of crystalline sponges. IUCrJ, 9(3), https://doi.org/10.1107/s2052252522002147

The crystalline sponge method facilitates the X-ray structure determination of samples that do not crystallize or are too sparsely available to afford viable crystallization. By including these materials in a metal–organic framework, the structure of... Read More about The benefits of Cu Kβ radiation for the single-crystal X-ray structure determination of crystalline sponges.

Towards traversable wormholes from force-free plasmas (2022)
Journal Article
Iqbal, N., & Ross, S. F. (2022). Towards traversable wormholes from force-free plasmas. SciPost Physics, 12(3), Article 086. https://doi.org/10.21468/scipostphys.12.3.086

The near-horizon region of magnetically charged black holes can have very strong magnetic fields. A useful low-energy effective theory for fluctuations of the fields, coupled to electrically charged particles, is force-free electrodynamics. The low e... Read More about Towards traversable wormholes from force-free plasmas.

Varying Coefficient Models and Design Choice for Bayes Linear Emulation of Complex Computer Models with Limited Model Evaluations (2022)
Journal Article
Wilson, A. L., Goldstein, M., & Dent, C. J. (2022). Varying Coefficient Models and Design Choice for Bayes Linear Emulation of Complex Computer Models with Limited Model Evaluations. SIAM/ASA Journal on Uncertainty Quantification, 10(1), 350-378. https://doi.org/10.1137/20m1318560

Computer models are widely used to help make decisions about real-world systems. As computer models of large and complex systems can have long run-times and high-dimensional input spaces, it is often necessary to use emulation to assess uncertainties... Read More about Varying Coefficient Models and Design Choice for Bayes Linear Emulation of Complex Computer Models with Limited Model Evaluations.

Artificial Protein Cage with Unusual Geometry and Regularly Embedded Gold Nanoparticles (2022)
Journal Article
Majsterkiewicz, K., Biela, A. P., Maity, S., Sharma, M., Piette, B. M., Kowalczyk, A., Gaweł, S., Chakraborti, S., Roos, W. H., & Heddle, J. G. (2022). Artificial Protein Cage with Unusual Geometry and Regularly Embedded Gold Nanoparticles. Nano Letters, 22(8), 3187-3195. https://doi.org/10.1021/acs.nanolett.1c04222

Artificial protein cages have great potential in a number of areas including cargo capture and delivery and as artificial vaccines. Here, we investigate an artificial protein cage whose assembly is triggered by gold nanoparticles. Using biochemical a... Read More about Artificial Protein Cage with Unusual Geometry and Regularly Embedded Gold Nanoparticles.

The structure of mean equicontinuous group actions (2022)
Journal Article
Fuhrmann, G., Gröger, M., & Lenz, D. (2022). The structure of mean equicontinuous group actions. Israel Journal of Mathematics, 247, 75-123. https://doi.org/10.1007/s11856-022-2292-8

We study mean equicontinuous actions of locally compact σ-compact amenable groups on compact metric spaces. In this setting, we establish the equivalence of mean equicontinuity and topo-isomorphy to the maximal equicontinuous factor and provide a cha... Read More about The structure of mean equicontinuous group actions.

Cutpoints of non-homogeneous random walks (2022)
Journal Article
Lo, C. H., Menshikov, M. V., & Wade, A. R. (2022). Cutpoints of non-homogeneous random walks. Alea (2006. Online), 19, 493-510. https://doi.org/10.30757/alea.v19-19

We give conditions under which near-critical stochastic processes on the half-line have infinitely many or finitely many cutpoints, generalizing existing results on nearest-neighbour random walks to adapted processes with bounded increments satisfyin... Read More about Cutpoints of non-homogeneous random walks.