Particle theory

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Radio detection of Cosmic Rays with the IceCube Surface Array Enhancement

ArXiv 2509.13033 (2025)
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Suppression of pair beam instabilities in a laboratory analogue of blazar pair cascades

(2025)

Authors:

Charles D Arrowsmith, Francesco Miniati, Pablo J Bilbao, Pascal Simon, Archie FA Bott, Stephane Burger, Hui Chen, Filipe D Cruz, Tristan Davenne, Anthony Dyson, Ilias Efthymiopoulos, Dustin H Froula, Alice Goillot, Jon T Gudmundsson, Dan Haberberger, Jack WD Halliday, Tom Hodge, Brian T Huffman, Sam Iaquinta, G Marshall, Brian Reville, Subir Sarkar, Alexander A Schekochihin, Luis O Silva, Raspberry Simpson, Vasiliki Stergiou, Raoul MGM Trines, Thibault Vieu, Nikolaos Charitonidis, Robert Bingham, Gianluca Gregori
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Commissioning and Testing of IceAct Telescopes at the IceCube Neutrino Observatory

ArXiv 2509.09778 (2025)

Authors:

Arun Vaidyanathan, Lars Heuermann
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Measurement of ion acceleration and diffusion in a laser-driven magnetized plasma

(2025)

Authors:

JTY Chu, JWD Halliday, C Heaton, K Moczulski, A Blazevic, D Schumacher, M Metternich, H Nazary, CD Arrowsmith, AR Bell, KA Beyer, AFA Bott, T Campbell, E Hansen, DQ Lamb, F Miniati, P Neumayer, CAJ Palmer, B Reville, A Reyes, S Sarkar, A Scopatz, C Spindloe, CB Stuart, H Wen, P Tzeferacos, R Bingham, G Gregori
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Higher axion strings

Journal of High Energy Physics Springer Nature 2025:8 (2025) 182

Authors:

Vazha Loladze, Arthur Platschorre, Mario Reig

Abstract:

We study the minimal requirements to obtain axion strings for axions with exponentially good quality. These ingredients appear in theories where an axion coming from a higher-form gauge field mixes with the phase of a complex scalar field. The resulting axion is perturbatively massless and inherits a high-quality shift symmetry from the global higher-form symmetry while being compatible with a post-inflationary axion scenario. Axions produced in this manner share features of both extra-dimensional and ordinary axions but are ultimately distinct from either. We refer to such axions as higher axions, as the mechanism responsible for the mixing is that of higher-groups. We present a simple toy model on a 5-dimensional manifold with boundary. The boundary hosts the complex scalar that provides axion strings through standard mechanisms. In addition, we study how these scenarios may arise in heterotic and type II string theory compactifications.
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