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4 papers
Gravitational signatures of ALP dark matter fragmentation
Aleksandr Chatrchyan, Cem Eröncel, Matthias Koschnitzke +1
The misalignment mechanism for axion-like particles (ALPs) is a leading explanation for dark matter. In this work we investigate ALPs with non-periodic potentials, which allow for…
Real-time dynamics of false vacuum decay
Laura Batini, Aleksandr Chatrchyan, Jürgen Berges
We investigate false vacuum decay of a relativistic scalar field initialized in the metastable minimum of an asymmetric double-well potential. The transition to the true ground sta…
Gravitational waves from the fragmentation of axion-like particle dark matter
Aleksandr Chatrchyan, Joerg Jaeckel
The misalignment mechanism allows for the efficient, and usually very cold, production of light scalar bosons, such as axion-like particles (ALPs), making them an appealing dark ma…
Foamy Dark Matter from Monodromies
Jürgen Berges, Aleksandr Chatrchyan, Joerg Jaeckel
We investigate the dynamics of axion-like particle (ALP) dark matter where the field range is enlarged by a monodromy. The monodromy potential allows sufficient production of dark…