Planck-Scale Dual-Curvature Lensing and Spacetime Noncommutativity
It was recently realized that Planck-scale momentum-space curvature, which is expected in some approaches to the quantum-gravity problem, can produce dual-curvature lensing, a feature which mainly affects the direction of observation of particles emitted by very distant sources. Several gray areas r...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2017/6075920 |
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| author | Giovanni Amelino-Camelia Leonardo Barcaroli Stefano Bianco Laura Pensato |
| author_facet | Giovanni Amelino-Camelia Leonardo Barcaroli Stefano Bianco Laura Pensato |
| author_sort | Giovanni Amelino-Camelia |
| collection | DOAJ |
| description | It was recently realized that Planck-scale momentum-space curvature, which is expected in some approaches to the quantum-gravity problem, can produce dual-curvature lensing, a feature which mainly affects the direction of observation of particles emitted by very distant sources. Several gray areas remain in our understanding of dual-curvature lensing, including the possibility that it might be just a coordinate artifact and the possibility that it might be in some sense a by-product of the better studied dual-curvature redshift. We stress that data reported by the IceCube neutrino telescope should motivate a more vigorous effort of investigation of dual-curvature lensing, and we observe that studies of the recently proposed “ρ-Minkowski noncommutative spacetime” could be valuable from this perspective. Through a dedicated ρ-Minkowski analysis, we show that dual-curvature lensing is not merely a coordinate artifact and that it can be present even in theories without dual-curvature redshift. |
| format | Article |
| id | doaj-art-71bd7a56859641678e2228b92dbbc8d3 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-71bd7a56859641678e2228b92dbbc8d32025-08-20T03:33:57ZengWileyAdvances in High Energy Physics1687-73571687-73652017-01-01201710.1155/2017/60759206075920Planck-Scale Dual-Curvature Lensing and Spacetime NoncommutativityGiovanni Amelino-Camelia0Leonardo Barcaroli1Stefano Bianco2Laura Pensato3Dipartimento di Fisica, Università “La Sapienza” and Sez. Roma1 INFN, P.le A. Moro 2, 00185 Roma, ItalyDipartimento di Fisica, Università “La Sapienza” and Sez. Roma1 INFN, P.le A. Moro 2, 00185 Roma, ItalyMax-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Am Mühlenberg 1, Golm, 14476 Potsdam, GermanyDipartimento di Fisica, Università “La Sapienza” and Sez. Roma1 INFN, P.le A. Moro 2, 00185 Roma, ItalyIt was recently realized that Planck-scale momentum-space curvature, which is expected in some approaches to the quantum-gravity problem, can produce dual-curvature lensing, a feature which mainly affects the direction of observation of particles emitted by very distant sources. Several gray areas remain in our understanding of dual-curvature lensing, including the possibility that it might be just a coordinate artifact and the possibility that it might be in some sense a by-product of the better studied dual-curvature redshift. We stress that data reported by the IceCube neutrino telescope should motivate a more vigorous effort of investigation of dual-curvature lensing, and we observe that studies of the recently proposed “ρ-Minkowski noncommutative spacetime” could be valuable from this perspective. Through a dedicated ρ-Minkowski analysis, we show that dual-curvature lensing is not merely a coordinate artifact and that it can be present even in theories without dual-curvature redshift.http://dx.doi.org/10.1155/2017/6075920 |
| spellingShingle | Giovanni Amelino-Camelia Leonardo Barcaroli Stefano Bianco Laura Pensato Planck-Scale Dual-Curvature Lensing and Spacetime Noncommutativity Advances in High Energy Physics |
| title | Planck-Scale Dual-Curvature Lensing and Spacetime Noncommutativity |
| title_full | Planck-Scale Dual-Curvature Lensing and Spacetime Noncommutativity |
| title_fullStr | Planck-Scale Dual-Curvature Lensing and Spacetime Noncommutativity |
| title_full_unstemmed | Planck-Scale Dual-Curvature Lensing and Spacetime Noncommutativity |
| title_short | Planck-Scale Dual-Curvature Lensing and Spacetime Noncommutativity |
| title_sort | planck scale dual curvature lensing and spacetime noncommutativity |
| url | http://dx.doi.org/10.1155/2017/6075920 |
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