Please use this identifier to cite or link to this item:
https://physrep.ff.bg.ac.rs/handle/123456789/272
DC Field | Value | Language |
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dc.contributor.author | Dimitrijević-Ćirić, Marija | en_US |
dc.contributor.author | Nikolić, B. | en_US |
dc.contributor.author | Radovanović, Voja | en_US |
dc.date.accessioned | 2022-07-05T17:17:57Z | - |
dc.date.available | 2022-07-05T17:17:57Z | - |
dc.date.issued | 2017-04-01 | - |
dc.identifier.issn | 0295-5075 | - |
dc.identifier.uri | https://physrep.ff.bg.ac.rs/handle/123456789/272 | - |
dc.description.abstract | The breaking of diffeomorphism invariance in the Moyal-Weyl (θ-constant) noncommutative (NC) space-time is a well-known and a long-standing problem. It makes the construction of NC gravity models and interpretation of their results very difficult. In order to solve this problem in this letter we construct a NC gravity action based on the NC SO(2, 3)∗ gauge group and the Seiberg-Witten expansion. The NC equations of motion show that the noncommutativity plays the role of a source for the curvature and/or torsion. Finally, we calculate the NC corrections to the Minkowski space-time and show that in the presence of noncommutativity the Minkowski space-time becomes curved, but remains torsion-free. More importantly, we show that the coordinate system we are using is given by the Fermi normal coordinates; the NC deformation is constant in this particular reference system. The breaking of diffeomorphism invariance is understood as a consequence of working in a preferred reference system. In an arbitrary reference system, the NC deformation is obtained by an appropriate coordinate transformation. | en_US |
dc.relation.ispartof | EPL | en_US |
dc.title | Noncommutative gravity and the relevance of the θ-constant deformation | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1209/0295-5075/118/21002 | - |
dc.identifier.scopus | 2-s2.0-85022198154 | - |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85022198154 | - |
dc.relation.issue | 2 | en_US |
dc.relation.volume | 118 | en_US |
item.fulltext | No Fulltext | - |
item.grantfulltext | none | - |
item.openairetype | Article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
crisitem.author.orcid | 0000-0001-7738-7141 | - |
crisitem.author.orcid | 0000-0003-0675-1836 | - |
Appears in Collections: | Journal Article |
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