Wen Yin (Tohoku U.): Axion domain wall formations and implications

Talk given at the online workshop "Advancements in Axion Physics" on October 17, 2023. Website: https://sites.google.com/view/axionworkshop
Abstract: The axion is characterized by a periodic potential leading to degenerate vacua, and thus predicts the presence of domain wall configurations. I plan to discuss the formation of these domain walls in the early Universe, their formation-dependent stability, and methods for their detection. In particular, I will show that the inflationary fluctuation can lead to very stable domain wall, which can be a domain wall production mechanism in string axiverse. I will also discuss the production of gravitational waves by domain wall network decay, and cosmic birefringence.

Тэги:

#physics #cosmology #axions #astrophysics #astronomy #dark_matter #dark_energy #stars

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