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Running kinetic couplings
0.3
0.25
Running kinetic coupling models
µ=0
(b)
(a) n=2
(b) n=4
The dilatonic running coupling
leads to the decrease of r.
r 0.05
0.2
0.15
µ=0.1
µ=−0.03
µ=0
However both the quadratic
and quartic potentials are
outside the 68 % CL boundary.
0.1
0.05
(a)
µ=0.1
µ=10
µ=10
This comes from the fact that
Planck data give tight upper
bounds on the scalar spectral
index than that of WMAP.
0
0.945 0.95 0.955 0.96 0.965 0.97 0.975 0.98
n s