Zobrazeno 1 - 10
of 79
pro vyhledávání: '"de la Ossa, Xenia"'
We revisit the series solutions of the attractor equations of 4d N=2 supergravities obtained by Calabi--Yau compactifications previously studied in Candelas, Kuusela, and McGovern (2021). While only convergent for a restricted set of black hole charg
Externí odkaz:
http://arxiv.org/abs/2410.07107
The deformation approach of arXiv:2104.07816 for computing zeta functions of one-parameter Calabi-Yau threefolds is generalised to cover also multiparameter manifolds. Consideration of the multiparameter case requires the development of an improved f
Externí odkaz:
http://arxiv.org/abs/2405.08067
Publikováno v:
SciPost Phys. 15, 146 (2023)
We find continuous families of supersymmetric flux vacua in IIB Calabi-Yau compactifications for multiparameter manifolds with an appropriate $\mathbb{Z}_2$ symmetry. We argue, supported by extensive computational evidence, that the numerators of the
Externí odkaz:
http://arxiv.org/abs/2302.03047
Autor:
de la Ossa, Xenia, Galdeano, Mateo
We construct new families of solutions of the heterotic G$_2$ system on squashed homogeneous 3-Sasakian manifolds, that is, using squashed metrics on either the 7-sphere or the Aloff-Wallach space $N_{1,1}$. We obtain AdS$_3$ solutions for all values
Externí odkaz:
http://arxiv.org/abs/2111.13221
Publikováno v:
SciPost Phys. 15, 144 (2023)
We study the mirrors of five-parameter Calabi-Yau threefolds first studied by Hulek and Verrill in the context of observed modular behaviour of the zeta functions for Calabi-Yau manifolds. Toric geometry allows for a simple explicit construction of t
Externí odkaz:
http://arxiv.org/abs/2111.02440
The zeta-function of a manifold is closely related to, and sometimes can be calculated completely, in terms of its periods. We report here on a practical and computationally rapid implementation of this procedure for families of Calabi-Yau manifolds
Externí odkaz:
http://arxiv.org/abs/2104.07816
We review the construction of almost contact metric (three-) structures, abbreviated ACM(3)S, on manifolds with a $G_2$ structure. These are of interest for certain supersymmetric configurations in string and M-theory. We compute the torsion of the $
Externí odkaz:
http://arxiv.org/abs/2101.12605
In the process of studying the zeta-function for one parameter families of Calabi-Yau manifolds we have been led to a manifold, first studied by Verrill, for which the quartic numerator of the zeta-function factorises into two quadrics remarkably oft
Externí odkaz:
http://arxiv.org/abs/1912.06146
Publikováno v:
JHEP {\bf 2001}, 195 (2020)
We dimensionally reduce the ten dimensional heterotic action on spacetimes of the form ${\cal M}_{(2,1)}\times Y$, where ${\cal M}_{(2,1)}$ is three dimensional maximally symmetric Anti de Sitter or Minkowski space, and $Y$ is a compact seven dimensi
Externí odkaz:
http://arxiv.org/abs/1904.01027
We consider a family of perturbative heterotic string backgrounds. These are complex threefolds X with c_1 = 0, each with a gauge field solving the Hermitian Yang-Mill's equations and compatible B and H fields that satisfy the anomaly cancellation co
Externí odkaz:
http://arxiv.org/abs/1810.00879