On the possibility of laboratory evidence for quantum superposition of geometries

Christodoulou, Marios1; Rovelli, Carlo2

2019-05-10

10.1016/j.physletb.2019.03.015

PHYSICS LETTERS B   影响因子和分区

0370-2693

1873-2445

We analyse the recent proposal of measuring a quantum gravity phenomenon in the lab by entangling two mesoscopic particles gravitationally. We give a generally covariant description of this phenomenon, where the relevant effect turns out to be a quantum superposition of proper times. We point out that if General Relativity is assumed to hold for masses at this scale, measurement of this effect would count as evidence for quantum superposition of spacetime geometries. This interpretation addresses objections appeared in the literature. We observe that the effect sheds light on the Planck mass, and argue that it is very plausibly a real effect. (C) 2019 The Author(s). Published by Elsevier B.V.

SCI

英语

第一 ; 通讯

Astronomy & Astrophysics ; Physics

Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields

WOS:000466802100012

ELSEVIER SCIENCE BV

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
2.Univ Toulon & Var, Aix Marseille Univ, CNRS, CPT, F-13288 Marseille, France

Christodoulou, Marios,Rovelli, Carlo. On the possibility of laboratory evidence for quantum superposition of geometries[J]. PHYSICS LETTERS B,2019,792:64-68.

Christodoulou, Marios,&Rovelli, Carlo.(2019).On the possibility of laboratory evidence for quantum superposition of geometries.PHYSICS LETTERS B,792,64-68.

Christodoulou, Marios,et al."On the possibility of laboratory evidence for quantum superposition of geometries".PHYSICS LETTERS B 792(2019):64-68.