Comment on "Gravitational Mass Carried by Sound Waves"
Abstract
We comment on the paper A. Esposito, R. Krichevsky, and A. Nicolis, "Gravitational Mass Carried by Sound Waves", Phys. Rev. Lett. 122, 084501 (2019). Our comment aims to avoid the confusion arisen in the scientific community and beyond on how the result of Esposito et al. should be interpreted.
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