Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Calin Iuliu Lazaroiu"'
Autor:
Calin Iuliu Lazaroiu
Publikováno v:
Nuclear Physics B, Vol 1000, Iss , Pp 116466- (2024)
We study the infrared scale expansion of single field cosmological models using the Hamilton-Jacobi formalism, showing that its specialization at unit scale parameter recovers the slow roll expansion. In particular, we show that the latter coincides
Externí odkaz:
https://doaj.org/article/9cab8a8539c049c4989ffa6fd2569e56
Publikováno v:
Nuclear Physics B, Vol 983, Iss , Pp 115929- (2022)
We study the first order infared behavior of tame hyperbolizable two-field cosmological models, defined as those classical two-field models whose scalar manifold is a connected, oriented and topologically finite hyperbolizable Riemann surface (Σ,G)
Externí odkaz:
https://doaj.org/article/92f90d09921b4f8395fdd7401058edbe
Autor:
Calin Iuliu Lazaroiu
Publikováno v:
Nuclear Physics B, Vol 983, Iss , Pp 115940- (2022)
We study the scaling behavior of classical multifield cosmological models with complete scalar manifold (M,G) and positive smooth scalar potential Φ, introducing a dynamical renormalization group action which relates their UV and IR limits. We show
Externí odkaz:
https://doaj.org/article/58a75c2f815b4f9b8b95a63833098069
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 9, Pp 1-67 (2019)
Abstract We determine the most general time-independent Noether symmetries of two-field cosmological models with rotationally-invariant scalar manifold metrics. In particular, we show that such models can have hidden symmetries, which arise if and on
Externí odkaz:
https://doaj.org/article/7fb6ae7e9be849d3aa58f84f7af49e02
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 4, Pp 1-56 (2019)
Abstract We study Noether symmetries in two-field cosmological α-attractors, investigating the case when the scalar manifold is an elementary hyperbolic surface. This encompasses and generalizes the case of the Poincaré disk. We solve the condition
Externí odkaz:
https://doaj.org/article/d5bcdfbb92744c9db8e4ed727bba6d96
Publikováno v:
Nuclear Physics B, Vol 937, Iss , Pp 434-477 (2018)
We study generalized two-field α-attractor models whose rescaled scalar manifold is the triply-punctured sphere endowed with its complete hyperbolic metric, whose underlying complex manifold is the modular curve Y(2). Using an explicit embedding int
Externí odkaz:
https://doaj.org/article/d5a16f894ae64827b426c5c626c2d077
Publikováno v:
Advances in Mathematical Physics, Vol 2018 (2018)
We consider generalized α-attractor models whose scalar potentials are globally well-behaved and whose scalar manifolds are elementary hyperbolic surfaces. Beyond the Poincaré disk D, such surfaces include the hyperbolic punctured disk D⁎ and the
Externí odkaz:
https://doaj.org/article/b9ae5e57265d45d389de175b2c4e79b5
Publikováno v:
Advances in High Energy Physics, Vol 2016 (2016)
We study “constrained generalized Killing (s)pinors,” which characterize supersymmetric flux compactifications of supergravity theories. Using geometric algebra techniques, we give conceptually clear and computationally effective methods for tran
Externí odkaz:
https://doaj.org/article/b5760214468e44a9a1db6dbee65dafd1
Autor:
Dmitry Doryn, Calin Iuliu Lazaroiu
Publikováno v:
Communications in Mathematical Physics. 397:53-84
We prove non-degeneracy of the cohomological bulk and boundary traces for general open-closed Landau-Ginzburg models associated to a pair $(X,W)$, where $X$ is a non-compact complex manifold with trivial canonical line bundle and $W$ is a complex-val
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49b0371c9a29e82d9aa312ba549fe402
https://doi.org/10.1007/s00220-022-04423-9
https://doi.org/10.1007/s00220-022-04423-9
Autor:
Lilia Anguelova, Calin Iuliu Lazaroiu
We derive consistency conditions for sustained slow roll and rapid turn inflation in two-field cosmological models with oriented scalar field space, which imply that inflationary models with field-space trajectories of this type are non-generic. In p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10521d941bc7936cefbe662b38019118
