An attempt to do without dark matter.

Formation of Large Structures in the Acceleration Universe with a Hybrid Expansion Law

In the current paper, we have studied the effect of dark energy on for-mation where dark energy exists in the background. For this purpose, we used both WMAP9 and Planck data to study how the radius changes with redshift in these mod-els. We used different data sets to fix the cosmological parameters to obtain a solution for a spherical region under collapse. The mechanism of structure formation f...

Dark Chocolate and Metabolic Syndrome; Do Polyphenols All that Matter?

Galaxy rotation curves without non-baryonic dark matter and modifications to gravity: effect of the Ampere force

Using an example of the galaxy, an attempt is made to explain the flat rotational curves of galaxies by means of the Ampere force. This is the first attempt of fitting the rotational curve without both non-baryonic dark matter and modifications to gravity. Using acceptable models for the galactic magnetic field and plausible physical parameters, we find that the flat rotational curves can be ob...

Singlet scalar dark matter in noncommutative space

In this paper, we examine the singlet scalar dark matter annihilation to becoming the Standard Model particles in the non-commutative space. In the recent decades, many candidates of dark matter have been offered,  but our information about  the nature of dark matter is still limited. There are such particle candidates as  scalar matetr, fermion, boson, gauge boson, etc.; however, they have nei...

Natural Dark Matter from an Unnatural Higgs Boson and New Colored Particles at the TeV Scale

The thermal relic abundance of Dark Matter motivates the existence of new electroweak scale particles, independent of naturalness considerations. However, most unnatural Dark Matter models do not ensure the presence of new particles charged under SU(3)C , resulting in challenging LHC phenomenology. Here, we present a class of models with scalar electroweak doublet Dark Matter that require a hos...