Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Sonia Paban"'
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 3, Pp 1-32 (2021)
Abstract There are well-known criteria on the potential and field-space geometry for determining if slow-roll, slow-turn, multi-field inflation is possible. However, even though it has been a topic of much recent interest, slow-roll, rapid-turn infla
Externí odkaz:
https://doaj.org/article/c09aba04175d49f1b7881f74eb511416
We present two families of multi-field potentials that support inflation while satisfying the refined de Sitter and the distance swampland conjectures. Both families feature Planck-compatible phenomenology. The first is a helix-type potential, in a f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::976cbcad70a0a9913ba7e95c395b668b
Publikováno v:
Physical Review D. 94
Using numerical and analytic methods, we study quantum tunneling from a Minkowski false vacuum to an anti-de Sitter true vacuum. Scanning the parameter space of theories with quartic and non-polynomial potentials, we find that for any given potential
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae6c79fdf550339977a343e323401ff9
https://doi.org/10.1103/physrevd.94.025023
https://doi.org/10.1103/physrevd.94.025023
We revisit the physics of transitions from a general equation of state parameter to the final stage of slow-roll inflation. We show that it is unlikely for the modes comprising the cosmic microwave background to contain imprints from a pre-inflationa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1608e6a3ff46fb59e3d16507a4a80b23
http://arxiv.org/abs/1604.03516
http://arxiv.org/abs/1604.03516
Autor:
Sonia Paban, Robert Rosati
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2018:042-042
We study multi-field inflation in random potentials generated via a non-equilibrium random matrix theory process. We make a novel modification of the process to include correlations between the elements of the Hessian and the height of the potential,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe9d122317a888e95ed5370808b7cb0c
https://doi.org/10.1088/1475-7516/2018/09/042
https://doi.org/10.1088/1475-7516/2018/09/042
Autor:
Michael Dine, Sonia Paban
Publikováno v:
Journal of High Energy Physics
The possibility of a landscape of metastable vacua raises the question of what fraction of vacua are truly long lived. Naively any would-be vacuum state has many nearby decay paths, and all possible decays must be suppressed. An interesting model of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da3724ffd7cb7d7265c19345bf4b2dee
http://arxiv.org/abs/1506.06428
http://arxiv.org/abs/1506.06428
Publikováno v:
Clough, K, Lim, E A, DiNunno, B S, Fischler, W, Flauger, R & Paban, S 2017, ' Robustness of inflation to inhomogeneous initial conditions ', Journal of Cosmology and Astroparticle Physics, vol. 2017, no. 9, pp. 1-26 . https://doi.org/10.1088/1475-7516/2017/09/025
We consider the effects of inhomogeneous initial conditions in both the scalar field profile and the extrinsic curvature on different inflationary models. In particular, we compare the robustness of small field inflation to that of large field inflat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32ef0d6b48af2e3a0d2f3b65e020c934
https://doi.org/10.1088/1475-7516/2017/09/025
https://doi.org/10.1088/1475-7516/2017/09/025
We show that Bogoliubov excited scalar and tensor modes do not alleviate Planckian evolution during inflation if one assumes that $r$ and the Bogoliubov coefficients are approximately scale invariant. We constrain the excitation parameter for the sca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84e8e26ea7cf51860f1d8471531d9625
http://arxiv.org/abs/1403.6216
http://arxiv.org/abs/1403.6216
Publikováno v:
Advances in Theoretical and Mathematical Physics. 3:343-361
We show that the four derivative terms in the effective action of three-dimensional N=8 Yang-Mills theory are determined by supersymmetry. These terms receive both perturbative and non-perturbative corrections. Using our technique for constraining th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2298c13b19bcab7a59697a1b12a61a7
https://doi.org/10.4310/atmp.1999.v3.n2.a6
https://doi.org/10.4310/atmp.1999.v3.n2.a6
We present a lower bound for the multifield bounce action with a quartic potential with bounded coefficients in the absence of gravity. We find that for a large number of fields the lower bound decreases with the number of fields as ${N}^{\ensuremath
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c84e6beddf72f2d3c803ba89b8c2f30
http://arxiv.org/abs/1401.1230
http://arxiv.org/abs/1401.1230