ar X iv : g r - qc / 0 20 20 66 v 2 2 1 M ay 2 00 2 INFNCA - TH 0202 Cosmology of the Jackiw - Teitelboim model

X iv : g r - qc / 0 10 50 69 v 2 2 1 M ay 2 00 1 MIT - CTP - 3140 Photon Decay at the Schwarzschild Horizon

A recent proposal that gravity theory is an emergent phenomenon also entails the possibility of photon decay near the Schwarzschild event horizon. We present a possible mechanism for such decay, which utilizes a dimensional reduction near the horizon.

ar X iv : g r - qc / 0 40 20 95 v 4 7 M ay 2 00 4 Vector field as a quintessence partner

We derive generic equations for a vector field driving the evolution of flat homogeneous isotropic universe and give a comparison with a scalar filed dynamics in the cosmology. Two exact solutions are shown as examples, which can serve to describe an inflation and a slow falling down of dynamical " cosmological constant " like it is given by the scalar quintessence. An attractive feature of vec...

ar X iv : g r - qc / 0 50 51 30 v 1 2 6 M ay 2 00 5 An Exact Solution for Static Scalar Fields Coupled to Gravity in ( 2 + 1 ) - Dimensions

We obtain an exact solution for the Einstein’s equations with cosmological constant coupled to a scalar, static particle in static, ”spherically” symmetric background in 2 + 1 dimensions. ————————————————————————————

ar X iv : g r - qc / 0 11 20 12 v 1 7 D ec 2 00 1 RELATIVISTIC GRAVITY WITH A DYNAMICAL PREFERRED FRAME

X iv : g r - qc / 0 20 80 37 v 1 1 4 A ug 2 00 2 Bianchi I cosmology and Euler - Calogero - Sutherland model

The Bianchi I cosmological model is brought into a form where the evolution of observables is governed by the unconstrained Hamiltonian that coincides with the Hamiltonian describing the relative motion of particles in the integrable 3-body hyperbolic Euler-Calogero-Sutherland system.