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9 papers · 2 filters
Landau-Ginzburg orbifolds with discrete torsion
M. Kreuzer, H. Skarke
We complete the classification of (2,2) vacua that can be constructed from Landau--Ginzburg models by abelian twists with arbitrary discrete torsions. Compared to the case without…
The Solution of the d-Dimensional Twisted Group Lattices
O. Lechtenfeld, S. Samuel
The general d-dimensional twisted group lattice is solved. The irreducible representations of the corresponding group are constructed by an explicit procedure. It is proven that th…
Four-Dimensional Twisted Group Lattices
O. Lechtenfeld, S. Samuel
Four-dimensional twisted group lattices are used as models for space-time structure. Compared to other attempts at space-time deformation, they have two main advantages: They have…
How Many Strings Exist ?
Sergei V. Ketov
Possible ways of constructing extended fermionic strings with world-sheet supersymmetry are reviewed. String theory constraints form, in general, a non-linear quasi(super)con…
The BRST Charge for the $\hat{D}(2,1;\a)$ Non-Linear Quasi-Superconformal Algebra
Sergei V. Ketov
The quantum BRST charge for the most general, two-dimensional, non-linear, quasi-superconformal algebra $\hat{D}(1,2;\a)$, whose linearisation is the so-called `large' …
Renormalization Group Flow in a General Gauge Theory
Harald Skarke
The renormalization group flow in a general renormalizable gauge theory with a simple gauge group in 3+1 dimensions is analyzed. The flow of the ratios of the Yukawa couplings and…