N $$ \mathcal{N} $$ =2 heterotic string compactifications on orbifolds of K3 × T 2

Heterotic string on the CHL orbifold of K3

(2016) Shouvik Datta et al.   JOURNAL OF HIGH ENERGY PHYSICS

Generalised universality of gauge thresholds in heterotic vacua with and without supersymmetry

(2015) Carlo Angelantonj et al.   NUCLEAR PHYSICS B

Universality of gauge thresholds in non-supersymmetric heterotic vacua

(2014) Carlo Angelantonj et al.   PHYSICS LETTERS B

A K3 sigma model with $ \mathbb{Z}_2^8 $ : $ \mathbb{M_{20 }} $ symmetry

(2014) Matthias R. Gaberdiel et al.   JOURNAL OF HIGH ENERGY PHYSICS

K3 surfaces, $\mathcal{N}=4$ dyons and the Mathieu group $M_{24}$

(2013) Miranda C.N. Cheng   Communications in Number Theory and Physics

Note on twisted elliptic genus of K3 surface

(2010) Tohru Eguchi et al.   PHYSICS LETTERS B

Mathieu twining characters for K3

(2010) Matthias R. Gaberdiel et al.   JOURNAL OF HIGH ENERGY PHYSICS