2020-06-22

UTAPwiki/セミナー/初期宇宙・相対論速報

Experiments towards the Quantum Nature of Gravity and the Related Theoretical Challenges †

Tomohiro Fujita †

Quantum gravity is one of the most outstanding problems in physics. In fact, we do not know if
gravity should be quantized in a similar way to the other degree of freedoms. Recently, a couple
of experiments are proposed to test whether gravitational fields become quantum superposition or not.
After the proposal, a number of questions are raised and the possible implications of the experiments
are under discussion. I will introduce the proposed experiments and the related questions
and hope to specify the remaining theoretical challenges to clarify the implications.

References:
[1] Phys.Rev.Lett. 119 (2017) 24, 240401 [1707.06050]
[2] Phys.Rev.Lett. 119 (2017) 24, 240402 [1707.06036]
[3] Phys.Lett.B 792 (2019) 64-68 [1808.05842]
[4] arXiv: 2005.14596