Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Gaveshna Gupta"'
Publikováno v:
Physics Letters B, Vol 760, Iss C, Pp 263-266 (2016)
We explored a Higgs inflationary scenario in the SUGRA embedding of the MSSM in Einstein frame where the inflaton is contained in the SU(2) Higgs doublet. We include all higher order non-renormalizable terms to the MSSM superpotential and an appropri
Externí odkaz:
https://doaj.org/article/12e78b74de6b4f48863133b0ab0a9a23
Publikováno v:
International Journal of Modern Physics D. 29:2050029
We study the possibility of reheating the universe in its early stages through the evaporation of Primordial Black Holes (PBHs) that are formed due to the collapse of the inhomogeneities that were generated during inflation. By using the current resu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55954a8abe57a72e94277a5948c04c1e
https://doi.org/10.1142/s0218271820500297
https://doi.org/10.1142/s0218271820500297
Publikováno v:
Physics Letters B
Physics Letters B, Vol 760, Iss C, Pp 263-266 (2016)
Physics Letters B, Vol 760, Iss C, Pp 263-266 (2016)
We explored a Higgs inflationary scenario in the SUGRA embedding of the MSSM in Einstein frame where the inflaton is contained in the $SU(2)$ Higgs doublet. We include all higher order non-renormalizable terms to the MSSM superpotential and an approp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f125db6535f4fc1100b28d43b6bcfe41
http://hdl.handle.net/11386/4679679
http://hdl.handle.net/11386/4679679
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 420:1309-1316
We look at observational constraints on the thawing class of scalar field models proposed to explain the late-time acceleration of the universe. Using the recently introduced ‘Statefinder hierarchy’, we compare these thawing class of models with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b0efcf43701a946246aea22a1b10bb3
https://doi.org/10.1111/j.1365-2966.2011.20114.x
https://doi.org/10.1111/j.1365-2966.2011.20114.x
Using the latest observational data we obtain a lower bound on the initial value of the quintessence field in thawing quintessence models of dark energy. For potentials of the form V(\phi) \phi^{\pm2} we find that the initial value |\phi_i|>7x10^{18}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c937421f61a1e340eea6db5964df2538
Publikováno v:
Physical Review D. 85
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf4d765a848617ae711af4f3f1d41eae
https://doi.org/10.1103/physrevd.85.089907
https://doi.org/10.1103/physrevd.85.089907
Publikováno v:
The Twelfth Marcel Grossmann Meeting.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73590cdc6a157c95a150787edf9edcec
https://doi.org/10.1142/9789814374552_0187
https://doi.org/10.1142/9789814374552_0187
Publikováno v:
Physical Review D. 85
We study the observational constraints for the axion models in string theory which can successfully act as quintessence. The evolution of the universe in this model is sensitive to the initial value of the axion field. This initial value of the axion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b949e8a0a893c13a87303767ab3019e
https://doi.org/10.1103/physrevd.85.023501
https://doi.org/10.1103/physrevd.85.023501
We investigate quintessence and phantom dark energy scenarios, in which the scalar fields evolve in nearly flat potentials and are non-minimally coupled to gravity. We show that all such models converge to a common behavior and we provide the corresp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f8c0860f99e449b09c7a74935a4a166
We consider Brans-Dicke type nonminimally coupled scalar field as a candidate for dark energy. In the conformally transformed Einstein's frame, our model is similar to {\it coupled quintessence} model. In such models, we consider potentials for the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5d323346012ee5fcb7a818d3984d057