40 citations · 40 across the 2 of their papers we have counts for
4 papers
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…
Low redshift observational constraints on tachyon models of dark energy
Avinash Singh, Archana Sangwan, H. K. Jassal
The background evolution of an accelerated, dark energy dominated universe is aptly described by non-canonical tachyon scalar field models. The accelerated expansion of the univers…
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…