47 citations · 172 across the 14 of their papers we have counts for
14 papers
Non-supersymmetric dualities beyond the gauge algebra
Bernardo Fraiman, Vittorio Larotonda, Ling Lin +1
We provide a testing ground for dualities of non-supersymmetric type 0 orientifolds by finding the global forms of their gauge groups. As an example, we consider the Bergman--Gaber…
Moduli-Space Laplacians, Asymptotic Geometry, and the Emergent String Conjecture
Christian Aoufia, Muldrow Etheredge, Bernardo Fraiman +2
At asymptotic limits of moduli spaces of quantum gravity vacua, we argue that the masses of the lightest particle towers are eigenfunctions of the moduli-space Laplacian. The assoc…
Non-abelian asymmetric orbifolds with vanishing one-loop vacuum energy
Bernardo Fraiman, Vittorio Larotonda, Michelangelo Tartaglia
We present a partial classification of four-dimensional, non-supersymmetric Type II toroidal orbifolds with non-abelian point groups of rotations, and vanishing vacuum energy at on…
EFTs with Symmetric Moduli Spaces: the Landscape and the Swampland
Stephanie Baines, Veronica Collazuol, Bernardo Fraiman +2
The Swampland Distance Conjecture (SDC) states that, for any infinite-distance limit in the moduli space of a quantum gravity effective field theory (EFT), there should exist an in…
Symmetries and dualities in non-supersymmetric CHL strings
Bernardo Fraiman, Héctor Parra de Freitas
We chart the classical moduli space of heterotic strings with broken supersymmetry a la Scherk-Schwarz and gauge group rank reduced by 8 in eight dimensions. This space consists of…
The Boundary of Symmetric Moduli Spaces and the Swampland Distance Conjecture
Stephanie Baines, Veronica Collazuol, Bernardo Fraiman +2
For non-compact, locally symmetric moduli spaces M, the set of geodesics and the geometry of the boundary can be completely characterised using group theory. In particular, geodesi…
Non-Supersymmetric Heterotic Strings on a Circle
Bernardo Fraiman, Mariana Graña, Héctor Parra De Freitas +1
Motivated by a recent construction of non-supersymmetric , we revisit the heterotic string compactified on a torus. The string one-loop potential…
Tadpoles and Gauge Symmetries
Andreas P. Braun, Bernardo Fraiman, Mariana Graña +2
The tadpole conjecture proposes that complex structure moduli stabilisation by fluxes that have low tadpole charge can be realised only at special points in moduli space, leading g…
Unifying the 6D String Landscape
Bernardo Fraiman, Héctor Parra De Freitas
We propose an organizing principle for string theory moduli spaces in six dimensions with , based on a rank reduction map, into which all known constructions f…
Freezing of Gauge Symmetries in the Heterotic String on
Bernardo Fraiman, Héctor Parra de Freitas
We derive a map relating the gauge symmetry groups of heterotic strings on to other components of the moduli space with rank reduction. This generalizes the results for …
Symmetry Enhancements in 7d Heterotic Strings
Bernardo Fraiman, Héctor Parra De Freitas
We use a moduli space exploration algorithm to produce a complete list of maximally enhanced gauge groups that are realized in the heterotic string in 7d, encompassing the usual Na…
Exploring the landscape of CHL strings on T^d
Anamaria Font, Bernardo Fraiman, Mariana Graña +2
Compactifications of the heterotic string on special T^d/Z_2 orbifolds realize a landscape of string models with 16 supercharges and a gauge group on the left-moving sector of redu…
Exploring the landscape of heterotic strings on T^d
Anamaría Font, Bernardo Fraiman, Mariana Graña +2
Compactifications of the heterotic string on T^d are the simplest, yet rich enough playgrounds to uncover swampland ideas: the U(1)^{d+16} left-moving gauge symmetry gets enhanced…
A new twist on heterotic string compactifications
Bernardo Fraiman, Mariana Graña, Carmen A. Núñez
A rich pattern of gauge symmetries is found in the moduli space of heterotic string toroidal compactifications, at fixed points of the T-duality transformations. We analyze this pa…