Conveners
Inflation-I
- Pravabati CHIANGANGBAM
Dr
Suratna Das
(INSPIRE Faculty)
29/01/2015, 14:00
Contributory Talks
Abstract: Recent observational developments in the fields of high energy physics and cosmology have set some new challenges in their respective fields. Observation of 125 GeV mass Higgs boson has raised the concern about the instability of electroweak vacuum around $10^{10}$ GeV whereas observations by BICEP2, if turns out to be correct, would set the inflationary scale surprisingly close to...
Sayantan Choudhury
(urn:Facebook)
29/01/2015, 14:15
Contributory Talks
In this paper we will illustrate how to constrain unavoidable K\"ahler corrections for ${\cal N}=1$ supergravity (SUGRA)
inflation from the recent Planck data. We will show that the non-renormalizable K\"ahler operators will induce in general {\it non-minimal kinetic} term for the inflaton field,
and two types of SUGRA corrections in the potential - the {\it Hubble-induced mass} ($c_{H}$),...
Mr
Das Kumar
(SINP)
29/01/2015, 14:30
Contributory Talks
We have constructed a large field N-flation model in the Supergravity framework.
In this simple set-up, N fields collectively drive inflation where each field traverses
sub-Planckian field values. This has been realised with a generalisation of the single
field chaotic inflation in Supergravity. Interestingly,despite of the presence of the field
interactions, the dynamics can be described...
Dr
Atri Deshamukhya
(Assam University, Silchar, india)
29/01/2015, 14:45
Contributory Talks
In this note, we re-examine
the Chromo-Natural Inflation model and its generalization in view of recent observational data. We find that the parameter space of the model admits a Non-negligible value of r as well as other cosmological observables consistent with data
Mr
Saikat CHAKRABORTY
(IIT Kanpur)
29/01/2015, 15:00
Contributory Talks
1)Brief introduction to cosmological bounce scenario, an alternative to the singular big-bang cosmology.
2)Brief introduction to f(R) gravity: Motivations, Action and field equation, stability issue, conformal equivalence to GR with a scalar field, Einstein frame description.
3)Analysing cosmological bounce in the framework of f(R) gravity: General bouncing condition for FRW metric with...
