Broken scale invariance, $$\alpha $$ α -attractors and vector impurity
Abstract We show that if the $$\alpha $$ α -attractor model is realized by the spontaneous breaking of the scale symmetry, then the stability and the dynamics of the vector field that gauges the scale symmetry can severely constrain the $$\alpha $$ α -parameter as $$5/6< \alpha < 1$$ 5 / 6 <...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-05-01
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| Series: | European Physical Journal C: Particles and Fields |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-4874-x |
| _version_ | 1818215416759058432 |
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| author | Özgür Akarsu Sibel Boran Emre Onur Kahya Neşe Özdemir Mehmet Ozkan |
| author_facet | Özgür Akarsu Sibel Boran Emre Onur Kahya Neşe Özdemir Mehmet Ozkan |
| author_sort | Özgür Akarsu |
| collection | DOAJ |
| description | Abstract We show that if the $$\alpha $$ α -attractor model is realized by the spontaneous breaking of the scale symmetry, then the stability and the dynamics of the vector field that gauges the scale symmetry can severely constrain the $$\alpha $$ α -parameter as $$5/6< \alpha < 1$$ 5 / 6 < α < 1 restricting the inflationary predictions in a very tiny region in the $$n_s - r$$ n s - r plane that are in great agreement with the latest Planck data. Although the different values of $$\alpha $$ α do not make a tangible difference for $$n_s$$ n s and r, they provide radically different scenarios for the post-inflationary dynamics which determines the standard BBN processes and the large scale isotropy of the universe. |
| first_indexed | 2024-12-12T06:35:44Z |
| format | Article |
| id | doaj.art-caf362fa706a46e68c15b108ed2ef06e |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-12T06:35:44Z |
| publishDate | 2017-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-caf362fa706a46e68c15b108ed2ef06e2022-12-22T00:34:28ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522017-05-0177511010.1140/epjc/s10052-017-4874-xBroken scale invariance, $$\alpha $$ α -attractors and vector impurityÖzgür Akarsu0Sibel Boran1Emre Onur Kahya2Neşe Özdemir3Mehmet Ozkan4Department of Physics, Istanbul Technical UniversityDepartment of Physics, Istanbul Technical UniversityDepartment of Physics, Istanbul Technical UniversityDepartment of Physics, Istanbul Technical UniversityDepartment of Physics, Istanbul Technical UniversityAbstract We show that if the $$\alpha $$ α -attractor model is realized by the spontaneous breaking of the scale symmetry, then the stability and the dynamics of the vector field that gauges the scale symmetry can severely constrain the $$\alpha $$ α -parameter as $$5/6< \alpha < 1$$ 5 / 6 < α < 1 restricting the inflationary predictions in a very tiny region in the $$n_s - r$$ n s - r plane that are in great agreement with the latest Planck data. Although the different values of $$\alpha $$ α do not make a tangible difference for $$n_s$$ n s and r, they provide radically different scenarios for the post-inflationary dynamics which determines the standard BBN processes and the large scale isotropy of the universe.http://link.springer.com/article/10.1140/epjc/s10052-017-4874-xVector FieldGauge FieldConformal GravityScale SymmetrySpecial Conformal Transformation |
| spellingShingle | Özgür Akarsu Sibel Boran Emre Onur Kahya Neşe Özdemir Mehmet Ozkan Broken scale invariance, $$\alpha $$ α -attractors and vector impurity European Physical Journal C: Particles and Fields Vector Field Gauge Field Conformal Gravity Scale Symmetry Special Conformal Transformation |
| title | Broken scale invariance, $$\alpha $$ α -attractors and vector impurity |
| title_full | Broken scale invariance, $$\alpha $$ α -attractors and vector impurity |
| title_fullStr | Broken scale invariance, $$\alpha $$ α -attractors and vector impurity |
| title_full_unstemmed | Broken scale invariance, $$\alpha $$ α -attractors and vector impurity |
| title_short | Broken scale invariance, $$\alpha $$ α -attractors and vector impurity |
| title_sort | broken scale invariance alpha α attractors and vector impurity |
| topic | Vector Field Gauge Field Conformal Gravity Scale Symmetry Special Conformal Transformation |
| url | http://link.springer.com/article/10.1140/epjc/s10052-017-4874-x |
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