The cosmological principle (CP)—the notion that the Universe is spatially isotropic and
homogeneous on large scales—underlies a century of progress in cosmology. It is …

Cosmic inflation provides a window to the highest energy densities accessible in nature, far
beyond those achievable in any realistic terrestrial experiment. Theoretical insights into the …

The abundance of primordial black holes changes in the presence of local non-Gaussianity.
A positive nonlinear parameter f NL increases the abundance while a negative one reduces …

We revisit the question of hemispherical power asymmetry in the WMAP and Planck
temperature sky maps by measuring the local variance over the sky and on disks of various …

A dark energy model (DE) is proposed based on the Ginzburg-Landau theory of phase
transition (GLT). This model, GLTofDE, surprisingly provides a framework to study not only …

Abstract Erickcek, Kamionkowski and Carroll proposed in 2008 that the dipole modulation of
the CMB could be due to a very large scale perturbation of the field ϕ causing the primordial …

Full-sky maps of the cosmic microwave background temperature reveal a 7% asymmetry of
fluctuation power between two halves of the sky. A common phenomenological model for …

We derive a general expression for the probability of observing deviations from statistical
isotropy in the cosmic microwave background (CMB) if the primordial fluctuations are non …

If the primordial bispectrum is sufficiently large then the CMB hemispherical power
asymmetry may be explained by a large-scale mode of exceptional amplitude which …

The large-scale power deficit in the cosmic microwave background fluctuations might be
relevant with the physics of preinflation, a bounce, or a superinflationary phase preceding …