Speaker
Jiro Soda
(Kobe University)
Description
It is believed that quantum fluctuations of various fields including electromagnetic and gravitational fields are generated during inflation. On top of those, quantum fluctuations of ultralight axion fields could be generated. These fields can be naturally mixed in the history of the universe. Moreover, because of the rapid expansion of the universe, the quantum fluctuations lead to the squeezed state. In this talk, I will show how the quantum states of those fields are entangled. I will also discuss how to characterize the entanglement with Bell-Mermin inequality. I will also mention how to observe entanglement through Hanbury-Brown-Twiss interferometry.
Primary author
Jiro Soda
(Kobe University)
