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[[UTAPwiki/セミナー/初期宇宙・相対論速報]] * [#z1f40ea8] * Experiments towards the Quantum Nature of Gravity and the Related Theoretical Challenges [#x1e6a0c1] **Tomohiro Fujita [#qc2b7e23] **Tomohiro Fujita [#x5aa71ed] 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 |