زینالی, کاظم and دارابی, فرهاد and متولی, حسین (1392) كيهان شناسي با ابعاد اضافي و اصل عدم قطعيت تعميم يافته مبتني بر نسبيت خاص دو گانه. Modern Physics Letters A ــ 28 (12). pp. 1350047-1. شاپا 0217-7323
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Official URL: http://www.worldscientific.com/doi/abs/10.1142/S02...
Title
MULTI-DIMENSIONAL COSMOLOGY AND DSR–GUP
English Abstract
A multi-dimensional cosmology with FRW type metric having four-dimensional spacetime and d-dimensional Ricci-flat internal space is considered with a higher-dimensional cosmological constant. The classical cosmology in commutative and Doubly Special Relativity–Generalized Uncertainty Principle (DSR–GUP) contexts is studied and the corresponding exact solutions for negative and positive cosmological constants are obtained. In the positive cosmological constant case, it is shown that unlike the commutative as well as GUP cases, in DSR–GUP case both scale factors of internal and external spaces after accelerating phase will inevitably experience decelerating phase leading simultaneously to a big crunch. This demarcation from GUP originates from the difference between the GUP and DSR–GUP algebras. The important result is that unlike GUP which results in eternal acceleration, DSR–GUP at first generates acceleration but prevents the eternal acceleration at late-times and turns it into deceleration.
| Item Type: | Article |
|---|---|
| زبان سند : | انگلیسی |
| نویسنده اول : | کاظم زینالی |
| نویسنده مسئول : | فرهاد دارابی |
| Additional Information: | Impact Factor(2013) 1.338 Abstracted & Indexed in : Science Citation Index, Scopus, Astrophysics Data System (ADS) Abstract Service , Current Contents®/Physical, Chemical & Earth Sciences , Chemical Abstracts Service , INSPEC , ISI Alerting Services , Mathematical Reviews , ciSearch , Zentralblatt MATH |
| Uncontrolled Keywords: | كيهان شناسي با ابعاد اضافي ; اصل عدم قطعيت تعميم يافته مبتني بر نسبيت خاص دو گانه |
| کلیدواژه ها (انگلیسی): | Multi-dimensional cosmology ; DSR–GUP |
| Subjects: | WN Radiology . Diagnostic Imaging |
| Divisions: | Faculty of Medicine > Department of Basic Sciences > Department of Medical Physics |
| ID Code: | 4145 |
| Deposited By: | Dr Kazem Zeinali |
| Deposited On: | 12 Feb 1392 07:35 |
| Last Modified: | 22 Aug 1395 12:48 |
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كيهان شناسي با ابعاد اضافي و اصل عدم قطعيت تعميم يافته مبتني بر نسبيت خاص دو گانه. (deposited 02 Feb 1392 10:50)
- كيهان شناسي با ابعاد اضافي و اصل عدم قطعيت تعميم يافته مبتني بر نسبيت خاص دو گانه. (deposited 12 Feb 1392 07:35) [Currently Displayed]
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