Jafar Sadeghi, Saeed Noori Gashti, Mohammad Reza Alipour, Mohammad Ali S. Afshar
{"title":"Swampland Conjectures and Noncommutative Phase Space in the Constant-roll Inflation with Brans-Dicke Cosmology","authors":"Jafar Sadeghi, Saeed Noori Gashti, Mohammad Reza Alipour, Mohammad Ali S. Afshar","doi":"10.1007/s10773-024-05803-8","DOIUrl":null,"url":null,"abstract":"<div><p>In this paper, we aim to challenge concepts such as constant-roll inflation, noncommutative parameters <span>\\((\\theta )\\)</span>, and Brans-Dicke cosmology. So, we first calculate the Hamiltonian of the modified Brans-Dicke gravitational model in noncommutative space. Using the constant-roll condition, we then calculate analytical solutions for certain cosmological parameters, such as the Hubble parameter and the potential. We also analyze the behavior of noncommutative parameters in the context of Brans-Dicke cosmology and constant-roll conditions. Finally, we investigate the validation of the swampland dS conjecture and present our results in detail.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 12","pages":""},"PeriodicalIF":1.3000,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Theoretical Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s10773-024-05803-8","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, we aim to challenge concepts such as constant-roll inflation, noncommutative parameters \((\theta )\), and Brans-Dicke cosmology. So, we first calculate the Hamiltonian of the modified Brans-Dicke gravitational model in noncommutative space. Using the constant-roll condition, we then calculate analytical solutions for certain cosmological parameters, such as the Hubble parameter and the potential. We also analyze the behavior of noncommutative parameters in the context of Brans-Dicke cosmology and constant-roll conditions. Finally, we investigate the validation of the swampland dS conjecture and present our results in detail.
期刊介绍:
International Journal of Theoretical Physics publishes original research and reviews in theoretical physics and neighboring fields. Dedicated to the unification of the latest physics research, this journal seeks to map the direction of future research by original work in traditional physics like general relativity, quantum theory with relativistic quantum field theory,as used in particle physics, and by fresh inquiry into quantum measurement theory, and other similarly fundamental areas, e.g. quantum geometry and quantum logic, etc.