Figure - available from: Advances in High Energy Physics
This content is subject to copyright. Terms and conditions apply.
Source publication
Since it is commonly believed that the observed large-scale structure of the
Universe is an imprint of quantum fluctuations existing at the very early stage
of its evolution, it is reasonable to pose the question: Do the effects of
quantum nonlocality, which are well established now by the laboratory studies,
manifest themselves also in the early U...
Similar publications
Planck-2015 data seem to favour a large value of the lensing amplitude
parameter, $A_{\rm L}=1.22\pm0.10$, in CMB spectra. This result is in $2\sigma$
tension with the lensing reconstruction result, $A_{\rm
L}^{\phi\phi}=0.95\pm0.04$. In this paper, we simulate several CMB anisotropy
and CMB lensing spectra based on Planck-2015 best-fit cosmologica...
We use a complete and rigorous statistical indicator to measure the level of
concordance between cosmological data sets, without relying on the inspection
of the marginal posterior distribution of some selected parameters. We apply
this test to state of the art cosmological data sets, to assess their agreement
within the $\Lambda$CDM model. We find...
Using the observation data of SNeIa, CMB and BAO, we establish two concrete
$f(T)$ models with nonminimal torsion-matter coupling extension. We study in
detail the cosmological implication of our models and find they are successful
in describing the observation of the Universe, its large scale structure and
evolution. In other words, these models d...
The success of precision cosmology depends not only on accurate observations,
but also on the theoretical model - which must be understood to at least the
same level of precision. Subtle relativistic effects can lead to biased
measurements if they are neglected. One such effect gives a systematic shift in
the distance-redshift relation away from it...
A cosmological model with a new variant of Chaplygin gas obeying an equation
of state(EoS), $P = A\rho - \frac{B}{\rho^{\alpha}}$ where $B= B_{0}a^{n}$ is
investigated in the context of its thermodynamical behaviour. Here $B_{0}$ and
$n$ are constants and $a$ is the scale factor. We show that the equation of
state of this `Variable Modified Chaplyg...
Citations
... where w parameterizes the effective equation of state of the cosmological matter, p = wρ (w = 0 for the non-relativistic matter, and w = 1/3 for the radiation); and T (η 0 ) is the age of the Universe. As a result, one should expect that, for example, the observed CMB radiation will be strongly anisotropic (if t * is associated with the instant of recombination), or a large number of topological defects will be formed at the boundaries between the domains [16][17][18][19] (if t * is associated with the instant of phase transition). The situation changes radically if the inflationary stage with exponential expansion is present. ...
An extended non-local field equations characterised by modified dispersion relations have been constructed based on non-local differential and hyperdifferential quantum operators. The dispersion relations obtained are found to be comparable to those obtained within the framework of unified theories and the covariant Kempf–Mangano algebra but free from tachyons. For the case of neutral meson, the upper limit of the characteristic length scale was found to be very close to the nuclear radius obtained from the study of \(\beta ^{+} \)-decay energy from finite-sized nuclei.