36
P. K. Suresh
Fig. 2 Quantum gravity effect (solid color lines) on the unlensed (upper panel) BB mode angular
spectrum of CMB for the quartic chaotic inflation and its lensed angular spectrum (lower panel) for
various values of HDO with joint BK15 150 GHz and Planck 2018 353 GHz data
The lensed BB mode angular spectrum corresponding to the quantum gravity
effect for the quadratic inflation lies marginally within the limit of BK15 and Planck
2018 joint data for l < 150, but at the same time out of the limit for most of the other
higher multipole moments. The lensed angular spectrum for the quantum gravity
effect is out of the limit of BK15 and Planck 2018 joint data for most of the multipoles.
The obtained lensed BB mode angular spectrum for the quartic inflation is compared with the BK15 and Planck 2018 joint data. The lensed angular spectrum corresponding to the quantum gravity effect for the quartic case lies within the limit of
BK15 and Planck 2018 joint data for l < 150, but out of the limits for most of the
other higher multipole moments.
From the study, it can be observed that the lensed BB mode spectrum of CMB for
the higher multipole moments is out of the limit of the BK15 and Planck 2018 joint
data for both inflationary models and it appears that quantum gravity effect cannot
be fully accounted for its compatibility with observed results. On the other hand, the
lower multipole region of the BB mode spectrum lies within the observed limit of the
BK15 and Planck 2018 joint data. Therefore, the reduction of the power of the BB
mode spectrum of the CMB, especially for the lower multipole less than 150 of the
lensed spectrum, can be considered as the signature of the quantum gravity. Further,
P. K. Suresh
Fig. 2 Quantum gravity effect (solid color lines) on the unlensed (upper panel) BB mode angular
spectrum of CMB for the quartic chaotic inflation and its lensed angular spectrum (lower panel) for
various values of HDO with joint BK15 150 GHz and Planck 2018 353 GHz data
The lensed BB mode angular spectrum corresponding to the quantum gravity
effect for the quadratic inflation lies marginally within the limit of BK15 and Planck
2018 joint data for l < 150, but at the same time out of the limit for most of the other
higher multipole moments. The lensed angular spectrum for the quantum gravity
effect is out of the limit of BK15 and Planck 2018 joint data for most of the multipoles.
The obtained lensed BB mode angular spectrum for the quartic inflation is compared with the BK15 and Planck 2018 joint data. The lensed angular spectrum corresponding to the quantum gravity effect for the quartic case lies within the limit of
BK15 and Planck 2018 joint data for l < 150, but out of the limits for most of the
other higher multipole moments.
From the study, it can be observed that the lensed BB mode spectrum of CMB for
the higher multipole moments is out of the limit of the BK15 and Planck 2018 joint
data for both inflationary models and it appears that quantum gravity effect cannot
be fully accounted for its compatibility with observed results. On the other hand, the
lower multipole region of the BB mode spectrum lies within the observed limit of the
BK15 and Planck 2018 joint data. Therefore, the reduction of the power of the BB
mode spectrum of the CMB, especially for the lower multipole less than 150 of the
lensed spectrum, can be considered as the signature of the quantum gravity. Further,