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astro-ph.CO2025
Kinetic Fragmentation of the QCD Axion on the Lattice
Matteo Fasiello, Joanes Lizarraga, Alexandros Papageorgiou +1
Kinetic misalignment, one of the most compelling scenarios for the non-thermal generation of axion dark matter, is generally accompanied by axion fragmentation, a process in which…
astro-ph.CO2025
Comparative study of the strong backreaction regime in axion inflation: the effect of the potential
Joanes Lizarraga, Carmelo López-Mediavilla, Ander Urio
Recent works have demonstrated the necessity of capturing the local inhomogeneous physics in axion inflation, and showed new genuine features, most notably the extension of the inf…