81 citations · 216 across the 6 of their papers we have counts for
5 papers · 1 filter
Observational constraints and predictions of the interacting dark sector with field-fluid mapping
Joseph P Johnson, Archana Sangwan, S. Shankaranarayanan
We consider an interacting field theory model that describes the dark energy - dark matter interaction. Only for a specific interaction term, this interacting field theory descript…
Detectability of nGauss primordial magnetic fields in the B-mode polarization of CMB
Archana Sangwan, S. Shankaranarayanan
The origin of large-scale magnetic fields in the Universe is still unknown. Observations suggest the presence of nGauss primordial magnetic fields at the last scattering surface. T…
Observational constraints on quintessence models of dark energy
Archana Sangwan, Ashutosh Tripathi, H. K. Jassal
Scalar fields aptly describe equation of state of dark energy. The scalar field models were initially proposed to circumvent the fine tuning problem of cosmological constant. Howev…
Reconstructing the dark energy potential
Archana Sangwan, Ankan Mukherjee, H. K. Jassal
Dark energy equation of state can be effectively described by that of a barotropic fluid. The barotropic fluid model describes the background evolution and the functional form of t…
Dark energy equation of state parameter and its variation at low redshifts
Ashutosh Tripathi, Archana Sangwan, H. K. Jassal
In this paper, we constrain dark energy models using a compendium of observations at low redshifts. We consider the dark energy as a barotropic fluid, with the equation of state a…