Exact Inflationary Solution to Nonminimally Coupled Scalar Field
WANG Wen-Fu1, YANG Shu-Zheng2
1Department of Industrial Automation, Southwest Petroleum Institute, Nanchong 637001
2Department of Physics, China West Normal University, Nanchong 637000
Exact Inflationary Solution to Nonminimally Coupled Scalar Field
WANG Wen-Fu1;YANG Shu-Zheng2
1Department of Industrial Automation, Southwest Petroleum Institute, Nanchong 637001
2Department of Physics, China West Normal University, Nanchong 637000
Abstract： We present a new exact inflationary solution to nonminimally coupled scalar field. The inflation is driven by the evolution of scalar field with inflation potential V(λ) =λ /4 ψ4 - 1/2m2 ψ 2 + V0. This includes the solution that behaves exponential inflation for ψ0 > ψ > ψend and then develops smoothly towards radiation-like evolution for ψ < ψend. The spectral index of the scalar density fluctuations, ns, is computed, and the result is consistent with the analysis of the Wilkinson-microwave anisotropy probe data. This model can lead to successful inflation with approx 10-7, rather than 10-13 reported previously.
(Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.))
引用本文:
WANG Wen-Fu;YANG Shu-Zheng. Exact Inflationary Solution to Nonminimally Coupled Scalar Field[J]. 中国物理快报, 2005, 22(5): 1296-1299.
WANG Wen-Fu, YANG Shu-Zheng. Exact Inflationary Solution to Nonminimally Coupled Scalar Field. Chin. Phys. Lett., 2005, 22(5): 1296-1299.
2005, Vol. 22 
