Inflation using a triplet of antisymmetric tensor fields
Abstract We study an inflation model driven by a triplet of antisymmetric tensor fields, with minimal and nonminimal couplings to gravity. First, we show that the presence of a triplet of antisymmetric tensor fields can provide inherent background isotropy in the stress–energy tensor contrary to the...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-08-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-11932-x |
| _version_ | 1797682626898690048 |
|---|---|
| author | Abhijith Ajith Sukanta Panda |
| author_facet | Abhijith Ajith Sukanta Panda |
| author_sort | Abhijith Ajith |
| collection | DOAJ |
| description | Abstract We study an inflation model driven by a triplet of antisymmetric tensor fields, with minimal and nonminimal couplings to gravity. First, we show that the presence of a triplet of antisymmetric tensor fields can provide inherent background isotropy in the stress–energy tensor contrary to the past studies using an antisymmetric tensor field. Inflation is supported in the presence of non-minimal couplings with gravity. We perform the slow roll analysis and also analyse perturbations to the antisymmetric tensor field as well as the tensor modes of perturbed metric. The speed of gravitational waves manifested from the tensor perturbations is tuned to c. We also study the evolution of the gravitational waves, calculate their power spectrum and tensor spectral index. |
| first_indexed | 2024-03-12T00:02:35Z |
| format | Article |
| id | doaj.art-cfd5f2a1ab704a398173b3d1fdb0032f |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-03-12T00:02:35Z |
| publishDate | 2023-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-cfd5f2a1ab704a398173b3d1fdb0032f2023-09-17T11:24:35ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-08-0183811210.1140/epjc/s10052-023-11932-xInflation using a triplet of antisymmetric tensor fieldsAbhijith Ajith0Sukanta Panda1Department of Physics, Indian Institute of Science, Education and ResearchDepartment of Physics, Indian Institute of Science, Education and ResearchAbstract We study an inflation model driven by a triplet of antisymmetric tensor fields, with minimal and nonminimal couplings to gravity. First, we show that the presence of a triplet of antisymmetric tensor fields can provide inherent background isotropy in the stress–energy tensor contrary to the past studies using an antisymmetric tensor field. Inflation is supported in the presence of non-minimal couplings with gravity. We perform the slow roll analysis and also analyse perturbations to the antisymmetric tensor field as well as the tensor modes of perturbed metric. The speed of gravitational waves manifested from the tensor perturbations is tuned to c. We also study the evolution of the gravitational waves, calculate their power spectrum and tensor spectral index.https://doi.org/10.1140/epjc/s10052-023-11932-x |
| spellingShingle | Abhijith Ajith Sukanta Panda Inflation using a triplet of antisymmetric tensor fields European Physical Journal C: Particles and Fields |
| title | Inflation using a triplet of antisymmetric tensor fields |
| title_full | Inflation using a triplet of antisymmetric tensor fields |
| title_fullStr | Inflation using a triplet of antisymmetric tensor fields |
| title_full_unstemmed | Inflation using a triplet of antisymmetric tensor fields |
| title_short | Inflation using a triplet of antisymmetric tensor fields |
| title_sort | inflation using a triplet of antisymmetric tensor fields |
| url | https://doi.org/10.1140/epjc/s10052-023-11932-x |
| work_keys_str_mv | AT abhijithajith inflationusingatripletofantisymmetrictensorfields AT sukantapanda inflationusingatripletofantisymmetrictensorfields |