165 citations · 471 across the 17 of their papers we have counts for
8 papers · 1 filter
Bulk photons in Asymmetrically Warped Space-times and Non-trivial Vacuum Refractive Index
K. Farakos, N. E. Mavromatos, P. Pasipoularides
We consider asymmetrically warped brane models, or equivalently brane models where the background metric is characterized by different time and space warp factors. The main feature…
Derivation of a Vacuum Refractive Index in a Stringy Space-Time Foam Model
John Ellis, N. E. Mavromatos, D. V. Nanopoulos
It has been suggested that energetic photons propagating in vacuo should experience a non-trivial refractive index due to the foamy structure of space-time induced by quantum-gravi…
Lorentz Invariance Violation from String Theory
Nikolaos E. Mavromatos
In this brief, and by no means complete, review I discuss situations in string theory, in which Lorentz Invariance Violation may occur in a way consistent with world-sheet conforma…
Can strings live in four dimensions?
Jean Alexandre, Nikolaos E. Mavromatos
Using a novel, non-perturbative, time-dependent string configuration derived in [1], we present here an argument which selects new critical dimensions for the target space time of…
Non-Perturbative Formulation of Non-Critical String Models
Jean Alexandre, John Ellis, Nikolaos E. Mavromatos
We apply to non-critical bosonic Liouville string models, characterized by a central-charge deficit Q, a new non-perturbative renormalization-group technique based on a functional…
Non-Perturbative Formulation of Time-Dependent String Solutions
Jean Alexandre, John Ellis, Nikolaos E. Mavromatos
We formulate here a new world-sheet renormalization-group technique for the bosonic string, which is non-perturbative in the Regge slope alpha' and based on a functional method for…