Enhancement of gravitational waves at Q-ball decay including non-linear density perturbations
M Kawasaki, K Murai - Journal of Cosmology and Astroparticle …, 2024 - iopscience.iop.org
The existence of a stochastic gravitational wave background is indicated by the recent
pulsar timing array (PTA) experiments. We study the enhanced production of second-order …
pulsar timing array (PTA) experiments. We study the enhanced production of second-order …
CMB lensing from early-formed dark matter halos
Some theoretical models for the early Universe predict a spike-type enhancement in the
primordial power spectrum on a small scale, which would result in forming early-formed dark …
primordial power spectrum on a small scale, which would result in forming early-formed dark …
From inflation to dark matter halo profiles: the impact of primordial non-Gaussianities on the central density cusp
It has recently been shown that local primordial non-Gaussianities (PNG) with significant
amplitude (| f NL|∼ 1000), at small (Mpc) scales, can help in forming simulated galaxies with …
amplitude (| f NL|∼ 1000), at small (Mpc) scales, can help in forming simulated galaxies with …
Secondary Gravitational Waves in Non-local Starobinsky inflation
A Addazi, AS Koshelev, S Pi, A Tokareva - arxiv preprint arxiv:2408.04004, 2024 - arxiv.org
We show how infinite derivative modifications of gravity impact on the stochastic background
of Gravitational Waves from early Universe. The generic property of the ghost-free theory …
of Gravitational Waves from early Universe. The generic property of the ghost-free theory …