Axion EFT and Dense Axion Stars

2016-05-12
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Axion EFT and Dense Axion Stars

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2016-05-12

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Axions can be described by a relativistic field theory with a real scalar field whose self-interaction potential is a periodic function. If axionic dark matter is a Bose-Einstein condensate, it can be described more simply by a nonrelativistic effective field theory with a complex scalar field. A stable axion star is a gravitationally bound Bose-Einstein condensate of axions. In previously known axion star solutions, the attractive forces of gravity and axion pair interactions are balanced by the kinetic axion pressure. A new class of axion stars has been discovered in which the attractive forces are balanced by the mean-field pressure of the axion Bose-Einstein condensate.

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Braaten, Eric. (2016). Axion EFT and Dense Axion Stars. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/180347.

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