Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Lerche, Wolfgang"'
Autor:
Lerche, Wolfgang
We consider the boundary dual of AdS3xS3xK3 for NS5-flux Q5=1, which is described by a sigma model with target space given by the d-fold symmetric product of K3. Building on results in algebraic geometry, we address the problem of deforming it away f
Externí odkaz:
http://arxiv.org/abs/2310.15237
We investigate infinite distance limits in the complex structure moduli space of F-theory compactified on K3 to eight dimensions. While this is among the simplest possible arenas to test ideas about the Swampland Distance Conjecture, it is neverthele
Externí odkaz:
http://arxiv.org/abs/2112.08385
We investigate holomorphic anomalies of partition functions underlying string compactifications on Calabi-Yau fourfolds with background fluxes. For elliptic fourfolds the partition functions have an alternative interpretation as elliptic genera of N=
Externí odkaz:
http://arxiv.org/abs/2012.00766
We investigate the interplay between the enumerative geometry of Calabi-Yau fourfolds with fluxes and the modularity of elliptic genera in four-dimensional string theories. We argue that certain contributions to the elliptic genus are given by deriva
Externí odkaz:
http://arxiv.org/abs/2005.10837
As a refinement of the Swampland Distance Conjecture, we propose that a quantum gravitational theory in an infinite distance limit of its moduli space either decompactifies, or reduces to an asymptotically tensionless, weakly coupled string theory. W
Externí odkaz:
http://arxiv.org/abs/1910.01135
We systematically analyse weak coupling limits for 2-form tensor fields in the presence of gravity. Such limits are significant for testing various versions of the Weak Gravity and Swampland Distance Conjectures, and more broadly, the phenomenon of e
Externí odkaz:
http://arxiv.org/abs/1904.06344
We analyse the Weak Gravity Conjecture for chiral four-dimensional F-theory compactifications with N=1 supersymmetry. Extending our previous work on nearly tensionless heterotic strings in six dimensions, we show that under certain assumptions a towe
Externí odkaz:
http://arxiv.org/abs/1901.08065
We prove a version of the Weak Gravity Conjecture for 6d F-theory or heterotic string compactifications with 8 supercharges. This sharpens our previous analysis by including massless scalar fields. The latter are known to modify the Weak Gravity Conj
Externí odkaz:
http://arxiv.org/abs/1810.05169