Outputs (219)

On the limitations of magneto-frictional relaxation (2022)
Journal Article
Yeates, A. (2022). On the limitations of magneto-frictional relaxation. Geophysical and Astrophysical Fluid Dynamics, 116(4), 305-320. https://doi.org/10.1080/03091929.2021.2021197

The magneto-frictional method is used in solar physics to compute both static and quasi-static models of the Sun’s coronal magnetic field. Here, we examine how accurately magneto-friction (without fluid pressure) is able to predict the relaxed state... Read More about On the limitations of magneto-frictional relaxation.

Four-manifolds up to connected sum with complex projective planes (2022)
Journal Article
Kaprowski, D., Powell, M., & Teichner, P. (2022). Four-manifolds up to connected sum with complex projective planes. American Journal of Mathematics, 144(1), 75-118. https://doi.org/10.1353/ajm.2022.0001

Based on results of Kreck, we show that closed, connected 4- manifolds up to connected sum with copies of the complex projective plane are classified in terms of the fundamental group, the orientation character and an extension class involving the se... Read More about Four-manifolds up to connected sum with complex projective planes.

Distortion Coefficients of the alpha-Grushin Plane (2022)
Journal Article
Borza, S. (2022). Distortion Coefficients of the alpha-Grushin Plane. Journal of Geometric Analysis, 32(3), Article 78. https://doi.org/10.1007/s12220-021-00736-8

We compute the distortion coefficients of the α-Grushin plane. They are expressed in terms of generalised trigonometric functions. Estimates for the distortion coefficients are then obtained and a conjecture of a measure contraction property conditio... Read More about Distortion Coefficients of the alpha-Grushin Plane.

Spectral analysis and domain truncation for Maxwell's equations (2022)
Journal Article
Bögli, S., Ferraresso, F., Marletta, M., & Tretter, C. (2023). Spectral analysis and domain truncation for Maxwell's equations. Journal de Mathématiques Pures et Appliquées, 170, 96-135. https://doi.org/10.1016/j.matpur.2022.12.004

We analyse how the spectrum of the anisotropic Maxwell system with bounded conductivity σ on a Lipschitz domain Ω is approximated by domain truncation. First we prove a new non-convex enclosure for the spectrum of the Maxwell system, with weak assump... Read More about Spectral analysis and domain truncation for Maxwell's equations.

Almost positive links are strongly quasipositive (2022)
Journal Article
Feller, P., Lewark, L., & Lobb, A. (2023). Almost positive links are strongly quasipositive. Mathematische Annalen, 385(1-2), 481-510. https://doi.org/10.1007/s00208-021-02328-x

We prove that any link admitting a diagram with a single negative crossing is strongly quasipositive. This answers a question of Stoimenow’s in the (strong) positive. As a second main result, we give a simple and complete characterization of link dia... Read More about Almost positive links are strongly quasipositive.

A suggestion for the quantification of precise and bounded probability to quantify epistemic uncertainty in scientific assessments (2022)
Journal Article
Raices Cruz, I., Troffaes, M., & Sahlin, U. (2022). A suggestion for the quantification of precise and bounded probability to quantify epistemic uncertainty in scientific assessments. Risk Analysis, 42(2), 239-253. https://doi.org/10.1111/risa.13871

An honest communication of uncertainty about quantities of interest enhances transparency in scientific assessments. To support this communication, risk assessors should choose appropriate ways to evaluate and characterize epistemic uncertainty. A fu... Read More about A suggestion for the quantification of precise and bounded probability to quantify epistemic uncertainty in scientific assessments.

Regge trajectories for the (2,0) theories (2022)
Journal Article
Lemos, M., van Rees, B. C., & Zhao, X. (2022). Regge trajectories for the (2,0) theories. Journal of High Energy Physics, 2022, Article 22. https://doi.org/10.1007/jhep01%282022%29022

We investigate the structure of conformal Regge trajectories for the maximally supersymmetric (2, 0) theories in six dimensions. The different conformal multiplets in a single superconformal multiplet must all have similarly-shaped Regge trajectories... Read More about Regge trajectories for the (2,0) theories.

Exploring Reggeon bound states in strongly-coupled N = 4 super Yang-Mills (2022)
Journal Article
Abl, T., & Sprenger, M. (2022). Exploring Reggeon bound states in strongly-coupled N = 4 super Yang-Mills. Journal of High Energy Physics, 2022(21), Article 21. https://doi.org/10.1007/jhep01%282022%29021

The multi-Regge limit of scattering amplitudes in strongly-coupled N = 4 super Yang-Mills is described by the large mass limit of a set of thermodynamic Bethe ansatz (TBA) equations. A non-trivial remainder function arises in this setup in certain ki... Read More about Exploring Reggeon bound states in strongly-coupled N = 4 super Yang-Mills.

Fermi-gas correlators of ADHM theory and triality symmetry (2022)
Journal Article
Hatsuda, Y., & Okazaki, T. (2022). Fermi-gas correlators of ADHM theory and triality symmetry. SciPost Physics, 12(1), https://doi.org/10.21468/scipostphys.12.1.005

We analytically study the Fermi-gas formulation of sphere correlation functions of the Coulomb branch operators for 3d N = 4 ADHM theory with a gauge group U(N), an adjoint hypermultiplet and l hypermultiplets which can describe a stack of N M2-brane... Read More about Fermi-gas correlators of ADHM theory and triality symmetry.