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Article: On the Possibility of Experimental Detection of the Discreteness of Time
Title | On the Possibility of Experimental Detection of the Discreteness of Time |
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Authors | |
Keywords | entanglement non perturbative effects time discreteness quantum gravity phenomenology quantum gravity |
Issue Date | 2020 |
Citation | Frontiers in Physics, 2020, v. 8, article no. 207 How to Cite? |
Abstract | © Copyright © 2020 Christodoulou and Rovelli. The Bose-Marletto-Vedral (BMV) experiment tests a quantum gravitational effect predicted by low energy perturbative quantum gravity. It has received attention because it may soon be within observational reach in the lab. We point out that: (i) in relativistic language, the experiment tests an interference effect between proper-time intervals; (ii) the feasibility study by Bose et al. suggests that current technology could allow to probe differences of such proper-time intervals of the order of 10−38 seconds, about twenty orders of magnitude beyond the current resolution of the best atomic clocks; (iii) the difference of proper times approaches Planck time (10−44 s) if the masses of the particles in the experiment approach the Planck mass (~micrograms). This implies that the experiment might open a window on the structure of time at the Planck scale. We show that if time differences are discrete at the Planck scale—as research in quantum gravity may suggest—the Planckian discreteness of time would appear as quantum levels of an in principle measurable entanglement entropy. |
Persistent Identifier | http://hdl.handle.net/10722/285869 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Christodoulou, Marios | - |
dc.contributor.author | Rovelli, Carlo | - |
dc.date.accessioned | 2020-08-18T04:56:51Z | - |
dc.date.available | 2020-08-18T04:56:51Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Frontiers in Physics, 2020, v. 8, article no. 207 | - |
dc.identifier.uri | http://hdl.handle.net/10722/285869 | - |
dc.description.abstract | © Copyright © 2020 Christodoulou and Rovelli. The Bose-Marletto-Vedral (BMV) experiment tests a quantum gravitational effect predicted by low energy perturbative quantum gravity. It has received attention because it may soon be within observational reach in the lab. We point out that: (i) in relativistic language, the experiment tests an interference effect between proper-time intervals; (ii) the feasibility study by Bose et al. suggests that current technology could allow to probe differences of such proper-time intervals of the order of 10−38 seconds, about twenty orders of magnitude beyond the current resolution of the best atomic clocks; (iii) the difference of proper times approaches Planck time (10−44 s) if the masses of the particles in the experiment approach the Planck mass (~micrograms). This implies that the experiment might open a window on the structure of time at the Planck scale. We show that if time differences are discrete at the Planck scale—as research in quantum gravity may suggest—the Planckian discreteness of time would appear as quantum levels of an in principle measurable entanglement entropy. | - |
dc.language | eng | - |
dc.relation.ispartof | Frontiers in Physics | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | entanglement | - |
dc.subject | non perturbative effects | - |
dc.subject | time discreteness | - |
dc.subject | quantum gravity phenomenology | - |
dc.subject | quantum gravity | - |
dc.title | On the Possibility of Experimental Detection of the Discreteness of Time | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.3389/fphy.2020.00207 | - |
dc.identifier.scopus | eid_2-s2.0-85088450847 | - |
dc.identifier.hkuros | 317306 | - |
dc.identifier.volume | 8 | - |
dc.identifier.spage | article no. 207 | - |
dc.identifier.epage | article no. 207 | - |
dc.identifier.eissn | 2296-424X | - |
dc.identifier.isi | WOS:000554019300001 | - |
dc.identifier.issnl | 2296-424X | - |