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Eight-dimensional non-geometric heterotic strings and enhanced gauge groups
Some constructions in string theory are linked to noncommutative geometry. Non-geometric strings are among such constructions. Non-geometric strings...
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Anomaly constraints for heterotic strings and supergravity in six dimensions
The landscape of six-dimensional supergravities is dramatically constrained by the cancellation of gauge and gravitational anomalies, but the full...
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The Heterotic String
In this chapter we construct and study a new class of string theories: the heteroric ones which on the left side are the bosonic string and on the...
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Back to heterotic strings on ALE spaces. Part I. Instantons, 2-groups and T-duality
In this paper we begin revisiting the little string theories (LSTs) which govern the dynamics of the instantonic heterotic E 8 × E 8 five-branes...
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Green-Schwarz and pure spinor formulations of chiral strings
Bosonic and RNS chiral strings have been defined from a singular gauge fixing of the respective Polyakov and spinning string actions, enforcing,...
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The Higgs branch of heterotic ALE instantons
We begin a study of the Higgs branch of six-dimensional (1 , 0) little string theories governing the worldvolumes of heterotic ALE instantons. We give...
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Gauged double field theory, current algebras and heterotic sigma models
We study the O ( D, D + n ) generalized metric and the gauge symmetries in the gauged double field theory (DFT) in view of current algebras and sigma...
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Superembedding Approach to Superstrings and Super-p-branes
We review a geometrical, so-called superembedding, approach to the description of the dynamics of point-like and extended supersymmetric objects...
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Topology change and heterotic flux vacua
We investigate the interrelation between topology and Narain T-duality of heterotic flux vacua. We present evidence that all 5 and 4-dimensional...
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Symmetry enhancements in 7d heterotic strings
We use a moduli space exploration algorithm to produce a complete list of maximally enhanced gauge groups that are realized in the heterotic string...
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Two loop mass renormalisation in heterotic string theory: NS states
In this work computation of the renormalised mass at two loop order for the NS sector of heterotic string theory is attempted. We first implement the...
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A heterotic Kodaira-Spencer theory at one-loop
We consider a heterotic version of six-dimensional Kodaira-Spencer gravity derived from the heterotic superpotential. We compute the one-loop...
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Carrollian Amplitudes from Strings
Carrollian holography is supposed to describe gravity in four-dimensional asymptotically flat space-time by the three-dimensional Carrollian CFT...
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SUSY Strings at Strong Coupling
We study the five 10d SUSY string theories at strong coupling. In this regime each model has a dual description either by a weakly coupled string...
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Heterotic de Sitter beyond modular symmetry
We study the vacua of 4 d heterotic toroidal orbifolds using effective theories consisting of an overall Kähler modulus, the dilaton, and...
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Affine algebras at infinite distance limits in the Heterotic String
We analyze the boundaries of the moduli spaces of compactifications of the heterotic string on T d , making particular emphasis on d = 2 and its...
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Revisiting α′ corrections to heterotic two-charge black holes
We find solutions of the heterotic string effective action describing the first-order α ′ corrections to two-charge black holes at finite temperature....
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Singular spin structures and superstrings
There are two main problems in finding the higher genus superstring measure. The first one is that for g ≥ 5 the super moduli space is not projected....