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Narain, G; Narain, G (reprint author), Chinese Acad Sci, Kavli Inst Theoret Phys China, Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
On the renormalization group perspective of alpha-attractors
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
语种英语
关键词Inflation Modified Gravity Physics Of The Early Universe Quantum Field Theory On Curved Space
摘要In this short paper we outline a recipe for the reconstruction of F(R) gravity starting from single field inflationary potentials in the Einstein frame. For simple potentials one can compute the explicit form of (R) whilst for more involved examples one gets a, parametric form of F(R). The F(R) reconstruction algorithm is used to study-various examples: power-law phi(n), exponential and alpha-attractors. In each case it is seen that for large R (corresponding to large value of inflaton field), F(R) similar to R-2 For the case of alpha-attractors F(R) similar to R-2 for all values of inflaton field (for all values of R) as alpha -> 0. For generic inflaton potential V(phi), it is seen that if V'/V -> 0 (for some phi) then the corresponding F(R) similar to R-2. We then study a-attractors in more detail using non-perturbative renormalisation group methods to analyse the reconstructed (R) It is seen that alpha -> 0 is an ultraviolet stable fixed point of the reriortualisation group trajectories.
2017
期号10页码:32
学科领域Astronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1088/1475-7516/2017/10/032
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21959
专题理论物理所科研产出_SCI论文
通讯作者Narain, G (reprint author), Chinese Acad Sci, Kavli Inst Theoret Phys China, Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
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Narain, G,Narain, G . On the renormalization group perspective of alpha-attractors[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2017(10):32.
APA Narain, G,&Narain, G .(2017).On the renormalization group perspective of alpha-attractors.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(10),32.
MLA Narain, G,et al."On the renormalization group perspective of alpha-attractors".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .10(2017):32.
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