Equivalent dual theories for 3D N=2 supergravity

Abstract

N =2 three dimensional Supergravity with internal R−symmetry generators can be understood as a two dimensional chiral Wess-Zumino-Witten model. In this paper, we present the reduced phase space description of the theory, which turns out to be flat limit of a generalised Liouville theory, up to zero modes. The reduced phase space description can also be explained as a gauged chiral Wess-Zumino-Witten model. We show that both these descriptions possess identical gauge and global (quantum N =2 superBMS 3 ) symmetries.1 nabamita@iiserb.ac.in (on lien from IISER Pune) 2 ks.saurish@gmail.com 3 paritars8@gmail.com 4 Higher spin and Supersymmetric generalisations were performed in [18][19][20][21][22][23][24][25].

Geometric actions and flat space holography

“…Generalizations of the present work to the supersymmetric case are also of interest. The reduction of the boundary of N = 1 flat space supergravity was already performed in [86] and N = 2 BMS 3 invariant WZW-models were considered recently in [120,121], however the relation to the geometric action on the coadjoint orbits of supersymmetric extensions of the BMS 3 group was not yet exposed. It seems that the techniques and methods discussed here can straightforwardly be applied to the supersymmetric extensions of the BMS 3 algebra and flat space supergravities of [122][123][124].…”

Interacting holographic dark energy model in Brans–Dicke cosmology and coincidence problem

“…In principle there is no compelling reason for this choice. However, we will see that this choice with small |n| can lead to consistent results which may justify this specific choice among other possible choices [32]. Thus, one can writė…”

“…Therefore, our system of equations is not closed and we still have freedom to choose one field in terms of another one. At this point, we may assume that Brans-Dicke scalar field can be described as a power law of the scale factor as φ = a n [32]. In principle there is no compelling reason for this choice.…”

“…Therefore it is useful to investigate the HDE model in the framework of Brans-Dicke theory. Such studies have been carried out in [18]. The cosmological application of interacting holographic dark energy density in the framework of Brans-Dicke cosmology has also been studied in [19] and [20].…”

Anisotropy effects on baryogenesis in f(R) theories of gravity

“…There are another modified gravity formalism which are completely different with f (R) model of gravity. The various aspect of f (R) models of gravity is investigated in [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The unification of dark energy and early time inflation with late time acceleration from f (R) theory to all Lorentz non-invariant theories is discussed by Nojiri and Odintsov [19].…”