A proposal for testing quantum gravity in the lab

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dc.contributor.authorAli, Ahmed Farag
dc.contributor.authorDas, Saurya
dc.contributor.authorVagenas, Elias C.
dc.date.accessioned2015-12-22T20:19:29Z
dc.date.available2015-12-22T20:19:29Z
dc.date.issued2015-12-22
dc.descriptionSherpa Romeo green journal. Permission to archive final published version.en_US
dc.description.abstractAttempts to formulate a quantum theory of gravitation are collectively known as quantum gravity. Various approaches to quantum gravity such as string theory and loop quantum gravity, as well as black hole physics and doubly special relativity theories predict a minimum measurable length, or a maximum observable momentum, and related modifications of the Heisenberg Uncertainty Principle to a so-called generalized uncertainty principle (GUP). We have proposed a GUP consistent with string theory, black hole physics and doubly special relativity theories and have showed that this modifies all quantum mechanical Hamiltonians. When applied to an elementary particle, it suggests that the space that confines it must be quantized, and in fact that all measurable lengths are quantized in units of a fundamental length (which can be the Planck length). On the one hand, this may signal the breakdown of the spacetime continuum picture near that scale, and on the other hand, it can predict an upper bound on the quantum gravity parameter in the GUP, from current observations. Furthermore, such fundamental discreteness of space may have observable consequences at length scales much larger than the Planck scale. Because this influences all the quantum Hamiltonians in an universal way, it predicts quantum gravity corrections to various quantum phenomena. Therefore, in the present work we compute these corrections to the Lamb shift, simple harmonic oscillator, Landau levels, and the tunneling current in a scanning tunneling microscope.en_US
dc.description.peer-reviewYesen_US
dc.identifier.citationAli, A.F., Das, S., & Vagenas, E.C. (2011). Proposal for testing quantum gravity in the lab. Physical Review D, 84(4), 011013. doi: 10.1103/PhysRevD.84044013
dc.identifier.urihttps://hdl.handle.net/10133/3848
dc.language.isoen_CAen_US
dc.publisher.departmentDepartment of Physicsen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.institutionAcademy of Athensen_US
dc.publisher.urlhttps://doi.org/10.1103/PhysRevD.84.044013
dc.subjectQuantum gravityen_US
dc.subjectGeneralized uncertainty principleen_US
dc.subjectGUPen_US
dc.subjectLamb shiften_US
dc.subjectSimple harmonic oscillatoren_US
dc.subjectLandau levelsen_US
dc.subjectScanning tunnelling microscopeen_US
dc.subjectSTMen_US
dc.titleA proposal for testing quantum gravity in the laben_US
dc.typeArticleen_US
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