230 citations · 853 across the 30 of their papers we have counts for
16 papers · 1 filter
Non-perturbative time-dependent String Backgrounds and Axion-induced Optical Activity
Jean Alexandre, Nick E. Mavromatos, Dylan Tanner
Conformal invariance for bosonic strings in time-dependent backgrounds of graviton, dilaton and Kalb-Ramond field is obtained by imposing Weyl-beta functions to be homogeneous in t…
Antisymmetric-Tensor and Electromagnetic effects in an alpha'-non-perturbative Four-Dimensional String Cosmology
Jean Alexandre, Nick E. Mavromatos, Dylan Tanner
Starting from an exact (in the Regge slope alpha') functional method for a bosonic stringy sigma-model, we investigate four-dimensional cosmological string solutions in graviton, d…
Relativistic Modified Newtonian Dynamics from String Theory?
Nick Mavromatos, Mairi Sakellariadou
We argue that TeVeS-like vector fields appear naturally in certain string theory backgrounds involving D0-branes, as a result of the recoil velocity field, expressing the interacti…
Worldsheet Instantons and a Null String Limit of Born-Infeld Theory
Gerald A. Goldin, Nick E. Mavromatos, Richard J. Szabo
For a superstring theory in four spacetime dimensions, we propose a modification of the Born-Infeld action that possesses a well-defined tensionless limit. We interpret this as des…
Quantum Gravity, Cosmology, (Liouville) Strings and Lorentz Invariance
Nick E. Mavromatos
I review some aspects of non-critical strings in connection with Lorentz-Invariance violating approaches to quantum gravity. I also argue how non-critical strings may provide a uni…
Acceleration of the Universe in Type-0 Non-Critical Strings: a Review
N. E. Mavromatos
I review cosmology within the framework of type-0 non-critical strings, proposed in collaboration with G. Diamandis, B. Georgalas, E. Papantonopoulos and I. Pappa. The instabilitie…