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Population model with immigration in continuous space (2019)
Journal Article
Chernousova, E., Hryniv, O., & Molchanov, S. (2020). Population model with immigration in continuous space. Mathematical Population Studies, 27(4), 199-215. https://doi.org/10.1080/08898480.2019.1626189

In a population model in continuous space, individuals evolve independently as branching random walks subject to immigration. If the underlying branching mechanism is subcritical, the model has a unique steady state for each value of the immigration... Read More about Population model with immigration in continuous space.

Twisted indices of 3d N = 4 gauge theories and enumerative geometry of quasi-maps (2019)
Journal Article
Bullimore, M., Ferrari, A., & Kim, H. (2019). Twisted indices of 3d N = 4 gauge theories and enumerative geometry of quasi-maps. Journal of High Energy Physics, 2019(7), Article 14. https://doi.org/10.1007/jhep07%282019%29014

We explore the geometric interpretation of the twisted index of 3d N = 4 gauge theories on S 1 × Σ where Σ is a closed Riemann surface. We focus on a rich class of supersymmetric quiver gauge theories that have isolated vacua under generic mass and F... Read More about Twisted indices of 3d N = 4 gauge theories and enumerative geometry of quasi-maps.

Anisotropic bidispersive convection (2019)
Journal Article
Straughan, B. (2019). Anisotropic bidispersive convection. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 475(2227), Article 20190206. https://doi.org/10.1098/rspa.2019.0206

This paper investigates thermal convection in an anisotropic bidisperse porous medium. A bidisperse porous medium is one which possesses the usual pores, but in addition, there are cracks or fissures in the solid skeleton and these give rise to a sec... Read More about Anisotropic bidispersive convection.

Cutting sequences on Bouw-Moeller surfaces: an S-adic characterization (2019)
Journal Article
Davis, D., Pasquinelli, I., & Ulcigrai, C. (2019). Cutting sequences on Bouw-Moeller surfaces: an S-adic characterization. Annales Scientifiques de l’École Normale Supérieure, 52(4), 927-1023. https://doi.org/10.24033/asens.2401

Résumé. On considère un codage symbolique des géodésiques sur une famille de surfaces de Veech (surfaces de translation riches en symétries affines) récemment découverte par Bouw et Möller. Ces surfaces, comme l’a remarqué Hooper, peuvent être réalis... Read More about Cutting sequences on Bouw-Moeller surfaces: an S-adic characterization.

The need for active region disconnection in 3D kinematic dynamo simulations (2019)
Journal Article
Whitbread, T., Yeates, A., & Munoz-Jaramillo, A. (2019). The need for active region disconnection in 3D kinematic dynamo simulations. Astronomy & Astrophysics, 627, Article A168. https://doi.org/10.1051/0004-6361/201935986

In this paper we address a discrepancy between the surface flux evolution in a 3D kinematic dynamo model and a 2D surface flux transport model that has been closely calibrated to the real Sun. We demonstrate that the difference is due to the connecti... Read More about The need for active region disconnection in 3D kinematic dynamo simulations.

Trivalent expanders, $(Delta – Y)$-transformation, and hyperbolic surfaces (2019)
Journal Article
Ivrissimtzis, I., Peyerimhoff, N., & Vdovina, A. (2019). Trivalent expanders, $(Delta – Y)$-transformation, and hyperbolic surfaces. Groups, Geometry, and Dynamics, 13(3), 1103-1131. https://doi.org/10.4171/ggd/518

We construct a new family of trivalent expanders tessellating hyperbolic surfaces with large isometry groups. These graphs are obtained from a family of Cayley graphs of nilpotent groups via (Delta–Y)-transformations. We study combinatorial, topologi... Read More about Trivalent expanders, $(Delta – Y)$-transformation, and hyperbolic surfaces.

Exploring Flaring Behaviour on Low Mass Stars, Solar-type Stars and the Sun (2019)
Journal Article
Doyle, L., Ramsay, G., Doyle, J., Wyper, P., Scullion, E., Wu, K., & McLaughlin, J. (2019). Exploring Flaring Behaviour on Low Mass Stars, Solar-type Stars and the Sun. Proceedings of the International Astronomical Union, 15(S354), 384-319. https://doi.org/10.1017/s1743921319009980

We report on our project to study the activity in both the Sun and low mass stars. Utilising high cadence, Hα observations of a filament eruption made using the CRISP spectropolarimeter mounted on the Swedish Solar Telescope has allowed us to determi... Read More about Exploring Flaring Behaviour on Low Mass Stars, Solar-type Stars and the Sun.

Exclusive vector meson production in heavy ion collisions (2019)
Journal Article
Khoze, V., Martin, A., & Ryskin, M. (2019). Exclusive vector meson production in heavy ion collisions. Journal of Physics G: Nuclear and Particle Physics, 46(8), Article 085002. https://doi.org/10.1088/1361-6471/ab2009

We discuss the salient features of exclusive vector meson production in heavy ion collisions at LHC energies. Special attention is paid to the space-time picture of the process. We account for both coherent and incoherent contributions. The explicit... Read More about Exclusive vector meson production in heavy ion collisions.

Infinite rank surface cluster algebras (2019)
Journal Article
Canakci, I., & Felikson, A. (2019). Infinite rank surface cluster algebras. Advances in Mathematics, 352, 862-942. https://doi.org/10.1016/j.aim.2019.06.008

We generalise surface cluster algebras to the case of infinite surfaces where the surface contains finitely many accumulation points of boundary marked points. To connect different triangulations of an infinite surface, we consider infinite mutation... Read More about Infinite rank surface cluster algebras.