A non-technical overview on gravity in two dimensions is provided. Applications discussed
in this work comprise 2D type 0A/0B string theory, Black Hole evaporation/thermodynamics …

It has been proposed that the Poincaré and some other symmetries of noncommutative field
theories should be twisted. Here we extend this idea to gauge transformations and find that …

We give formulations of noncommutative two-dimensional gravities in terms of
noncommutative gauge theories. We survey their classical solutions and show that solutions …

The use of a diffeomorphism covariant star product enables us to construct diffeomorphism
invariant gravities on noncommutative symplectic manifolds without twisting the symmetries …

It can be shown that in the BPP model the smooth phase transition from the asymptotically
decelerated AdS universe to the asymptotically accelerated DS universe is possible by …

We consider a Moyal plane and propose to make the noncommutativity parameter Θμν
bifermionic, ie composed of two fermionic (Grassmann odd) parameters. The Moyal product …

I discuss motivations for introducing Hopf algebra symmetries in noncommutative field
theories and briefly describe twisting of main symmetry transformations. New results include …

We show that the phase transition from the decelerating universe to the accelerating
universe, which is of relevance to the cosmological coincidence problem, is possible in the …

In a semiclassically quantized two-dimensional cosmological model, it can be shown that
the parameter of the equation of state for the accelerating universe can be positive due to …

Fundamental Interactions : Towards Noncommutative Gravity Page 1 3rd August 2009 15:13
World Scientific Review Volume - 9in x 6in WolfgangKummer Chapter 17 Towards …