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2-Group symmetries and M-theory (2022)
Journal Article
Del Zotto, M., García Etxebarria, I., & Schäfer-Nameki, S. (2022). 2-Group symmetries and M-theory. SciPost Physics, 13(5), Article 105 (2022). https://doi.org/10.21468/scipostphys.13.5.105

Quantum Field Theories engineered in M-theory can have 2-group symmetries, mixing 0-form and 1-form symmetry backgrounds in non-trivial ways. In this paper we develop methods for determining the 2-group structure from the boundary geometry of the M-t... Read More about 2-Group symmetries and M-theory.

On the effect of forcing of fold bifurcations and early-warning signals in population dynamics (2022)
Journal Article
Remo, F., Fuhrmann, G., & Jäger, T. (2022). On the effect of forcing of fold bifurcations and early-warning signals in population dynamics. Nonlinearity, 35(12), 6485-6527. https://doi.org/10.1088/1361-6544/ac98ee

The classical fold bifurcation is a paradigmatic example of a critical transition. It has been used in a variety of contexts, including in particular ecology and climate science, to motivate the role of slow recovery rates and increased autocorrelati... Read More about On the effect of forcing of fold bifurcations and early-warning signals in population dynamics.

The SAGEX Review on scattering amplitudes, Chapter 10: Selected topics on modular covariance of type IIB string amplitudes and their N=4 supersymmetric Yang-Mills duals (2022)
Journal Article
Dorigoni, D., Green, M. B., & Wen, C. (2022). The SAGEX Review on scattering amplitudes, Chapter 10: Selected topics on modular covariance of type IIB string amplitudes and their N=4 supersymmetric Yang-Mills duals. Journal of Physics A: Mathematical and Theoretical, 55(44), Article 443011. https://doi.org/10.1088/1751-8121/ac9263

This article reviews some results of the SAGEX programme that have developed in the understanding of the interplay of supersymmetry and modular covariance of scattering amplitudes in type IIB superstring theory and its holographic image in N=4 supers... Read More about The SAGEX Review on scattering amplitudes, Chapter 10: Selected topics on modular covariance of type IIB string amplitudes and their N=4 supersymmetric Yang-Mills duals.

The SAGEX Review on scattering amplitudes (2022)
Journal Article
Travaglini, G., Brandhuber, A., Dorey, P. E., McLoughlin, T. A., Abreu, S., Bern, Z., …White, C. (2022). The SAGEX Review on scattering amplitudes. Journal of Physics A: Mathematical and Theoretical, 55(44), Article 443001. https://doi.org/10.1088/1751-8121/ac8380

This is an introduction to, and invitation to read, a series of review articles on scattering amplitudes in gauge theory, gravity, and superstring theory. Our aim is to provide an overview of the field, from basic aspects to a selection of current (2... Read More about The SAGEX Review on scattering amplitudes.

Ramification Filtration and Differential Forms (2022)
Journal Article
Abrashkin, V. (2023). Ramification Filtration and Differential Forms. Izvestiâ Rossijskoj akademii nauk. Seriâ matematičeskaâ Известия Российской академии наук. Серия математическая (Online), 87(3), 5-22. https://doi.org/10.4213/im9322

Let L be a complete discrete valuation field of prime characteristic p with finite residue field. Denote by Γ(v)L the ramification subgroups of ΓL=Gal(Lsep/L). We consider the category MΓLieL of finite Zp[ΓL]-modules H, satisfying some additional (Li... Read More about Ramification Filtration and Differential Forms.

Cosmic Inflation and Genetic Algorithms (2022)
Journal Article
Abel, S. A., Constantin, A., Harvey, T. R., & Lukas, A. (2023). Cosmic Inflation and Genetic Algorithms. Fortschritte der Physik, 71(1), https://doi.org/10.1002/prop.202200161

Large classes of standard single-field slow-roll inflationary models consistentwith the required number of e-folds, the current bounds on the spectral indexof scalar perturbations, the tensor-to-scalar ratio, and the scale of inflation canbe efficien... Read More about Cosmic Inflation and Genetic Algorithms.

Rational points on complete intersections over 𝔽𝒒(𝒕) (2022)
Journal Article
Vishe, P. (2023). Rational points on complete intersections over 𝔽𝒒(𝒕). Proceedings of the London Mathematical Society, 126(2), 556-619. https://doi.org/10.1112/plms.12496

A two dimensional version of Farey dissection for function fields K = Fq(t) is developed and used to establish the quantitative arithmetic of the set of rational points on a smooth complete intersection of two quadrics X ⊂ P n−1 K , under the assumpt... Read More about Rational points on complete intersections over 𝔽𝒒(𝒕).

Interference-free walks in time: Temporally disjoint paths (2022)
Journal Article
Klobas, N., Mertzios, G., Molter, H., Niedermeier, R., & Zschoche, P. (2022). Interference-free walks in time: Temporally disjoint paths. Autonomous Agents and Multi-Agent Systems, 37, Article 1. https://doi.org/10.1007/s10458-022-09583-5

We investigate the computational complexity of finding temporally disjoint paths or walks in temporal graphs. There, the edge set changes over discrete time steps and a temporal path (resp. walk) uses edges that appear at monotonically increasing tim... Read More about Interference-free walks in time: Temporally disjoint paths.

Spectral Gap for Weil–Petersson Random Surfaces with Cusps (2022)
Journal Article
Hide, W. (2022). Spectral Gap for Weil–Petersson Random Surfaces with Cusps. International Mathematics Research Notices, https://doi.org/10.1093/imrn/rnac293

We show that for any ε>0⁠, α∈[0, 1 2 )⁠, as g→∞ a generic finite-area genus g hyperbolic surface with n=O(gα) cusps, sampled with probability arising from the Weil–Petersson metric on moduli space, has no non-zero eigenvalue of the Laplacian below 1... Read More about Spectral Gap for Weil–Petersson Random Surfaces with Cusps.

Semiclassics of three-dimensional SCFTs from holography (2022)
Journal Article
Cremonesi, S., Lanza, S., & Martucci, L. (2022). Semiclassics of three-dimensional SCFTs from holography. Journal of High Energy Physics, 2022, https://doi.org/10.1007/jhep10%282022%29111

We use holography to compute the large-N eective eld theory along the moduli space of vacua of an innite class of three-dimensional N = 2 SCFTs admitting a dual M-theory description. We focus in particular on toric models and show how the spectrum of... Read More about Semiclassics of three-dimensional SCFTs from holography.

Comments on QCD3 and anomalies with fundamental and adjoint matter (2022)
Journal Article
Lohitsiri, N., & Sulejmanpasic, T. (2022). Comments on QCD3 and anomalies with fundamental and adjoint matter. Journal of High Energy Physics, 2022(10), Article 81. https://doi.org/10.1007/jhep10%282022%29081

’t Hooft anomaly matching is powerful for constraining the low energy phases of gauge theories. In 3d one common anomaly is the parity anomaly in a T-symmetric theory where one cannot gauge the global symmetry group without breaking the time-reversal... Read More about Comments on QCD3 and anomalies with fundamental and adjoint matter.

Exact results for duality-covariant integrated correlators in N=4 SYM with general classical gauge groups (2022)
Journal Article
Dorigoni, D., Green, M. B., & Wen, C. (2022). Exact results for duality-covariant integrated correlators in N=4 SYM with general classical gauge groups. SciPost Physics, 13, Article 092(2022). https://doi.org/10.21468/scipostphys.13.4.092

We present exact expressions for certain integrated correlators of four superconformal primary operators in the stress tensor multiplet of N = 4 supersymmetric Yang–Mills (SYM) theory with classical gauge group, GN = SO(2N), SO(2N + 1), USp(2N). Thes... Read More about Exact results for duality-covariant integrated correlators in N=4 SYM with general classical gauge groups.

Holographic dissipation from the symplectic current (2022)
Journal Article
Donos, A., Kailidis, P., & Pantelidou, C. (2022). Holographic dissipation from the symplectic current. Journal of High Energy Physics, 2022(10), Article 58. https://doi.org/10.1007/jhep10%282022%29058

We develop analytic techniques to construct the leading dissipative terms in a derivative expansion of holographic fluids. Our basic ingredient is the Crnkovic-Witten symplectic current of classical gravity which we use to extract the dissipative tra... Read More about Holographic dissipation from the symplectic current.

Decision making under severe uncertainty on a budget (2022)
Conference Proceeding
Nakharutai, N., Destercke, S., & Troffaes, M. C. (2022). Decision making under severe uncertainty on a budget. In F. Dupin de Saint-Cyr, M. Öztürk-Escoffier, & N. Potyka (Eds.), . https://doi.org/10.1007/978-3-031-18843-5_13

Convex sets of probabilities are general models to describe and reason with uncertainty. Moreover, robust decision rules defined for them enable one to make cautious inferences by allowing sets of optimal actions to be returned, reflecting lack of in... Read More about Decision making under severe uncertainty on a budget.

Interacting conformal scalar in a wedge (2022)
Journal Article
Bissi, A., Dey, P., Sisti, J., & Söderberg, A. (2022). Interacting conformal scalar in a wedge. Journal of High Energy Physics, 2022(10), Article 60. https://doi.org/10.1007/jhep10%282022%29060

We study a class of two-point functions in a conformal field theory near a wedge. This is a set-up with two boundaries intersecting at an angle θ. We compute it as a solution to the Dyson-Schwinger equation of motion for a quartic interaction in the... Read More about Interacting conformal scalar in a wedge.

Quantum optimization of complex systems with a quantum annealer (2022)
Journal Article
Abel, S., Blance, A., & Spannowsky, M. (2022). Quantum optimization of complex systems with a quantum annealer. Physical Review A, 106(4), https://doi.org/10.1103/physreva.106.042607

We perform an in-depth comparison of quantum annealing with several classical optimization techniques, namely, thermal annealing, Nelder-Mead, and gradient descent. The focus of our study is large quasicontinuous potentials that must be encoded using... Read More about Quantum optimization of complex systems with a quantum annealer.

Extremism, segregation and oscillatory states emerge through collective opinion dynamics in a novel agent-based model (2022)
Journal Article
Stokes, B., Jackson, S., Garnett, P., & Luo, J. (2022). Extremism, segregation and oscillatory states emerge through collective opinion dynamics in a novel agent-based model. The Journal of Mathematical Sociology, https://doi.org/10.1080/0022250x.2022.2124246

Using mathematics to model the evolution of opinions among interacting agents is a rich and growing field. We present a novel agent-based model that enhances the explanatory power of existing theoretical frameworks, corroborates experimental findings... Read More about Extremism, segregation and oscillatory states emerge through collective opinion dynamics in a novel agent-based model.

Branes and Non‐Invertible Symmetries (2022)
Journal Article
García Etxebarria, I. (2022). Branes and Non‐Invertible Symmetries. Fortschritte der Physik, 70(11), https://doi.org/10.1002/prop.202200154

=4 supersymmetric Yang-Mills theories with algebra𝔰𝔬(4N) and appropriate choices of global structure can have non-invertible symmetries. We identify the branes holographically dual to the non-invertible symmetries, and derive the fusion rules for th... Read More about Branes and Non‐Invertible Symmetries.

Thermal convection in a Brinkman–Darcy–Kelvin–Voigt fluid with a generalized Maxwell–Cattaneo law (2022)
Journal Article
Straughan, B. (2023). Thermal convection in a Brinkman–Darcy–Kelvin–Voigt fluid with a generalized Maxwell–Cattaneo law. Annali dell'Universita di Ferrara, 69, 521–540. https://doi.org/10.1007/s11565-022-00448-z

We investigate thoroughly a model for thermal convection of a class of viscoelastic fluids in a porous medium of Brinkman–Darcy type. The saturating fluids are of Kelvin–Voigt nature. The equations governing the temperature field arise from Maxwell–C... Read More about Thermal convection in a Brinkman–Darcy–Kelvin–Voigt fluid with a generalized Maxwell–Cattaneo law.