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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Noether symmetry approach in f(R)-tachyon model
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Volume 702, No. 5, Year 2011
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Description
In this Letter by utilizing the Noether symmetry approach in cosmology, we attempt to find the tachyon potential via the application of this kind of symmetry to a flat Friedmann-Robertson-Walker (FRW) metric. We reduce the system of equations to simpler ones and obtain the general class of the tachyon's potential function and f(R) functions. We have found that the Noether symmetric model results in a power law f(R) and an inverse fourth power potential for the tachyonic field. Further we investigate numerically the cosmological evolution of our model and show explicitly the behavior of the equation of state crossing the cosmological constant boundary. © 2011 Elsevier B.V.
Authors & Co-Authors
Jamil, Mubasher
Pakistan, Islamabad
National University of Sciences and Technology
Mahomed, Fazal Mahmood
South Africa, Johannesburg
University of the Witwatersrand
Momeni, Davood
Iran, Tehran
Kharazmi University
Statistics
Citations: 99
Authors: 3
Affiliations: 3
Identifiers
Doi:
10.1016/j.physletb.2011.07.028
ISSN:
03702693