Modified Glaser’s Condensation Model

Tachyon condensation and quark mass in modified Sakai-Sugimoto model

This paper continues the investigation of the modified Sakai-Sugimoto model proposed in arXiv:0708.3233. Here we discuss in detail numerical solutions to the classical equations for the brane profile and the tachyon condensate. An ultraviolet cut-off turns out to be essential because the numerical solutions tend to rapidly diverge from the desired asymptotic solutions, beyond a sufficiently lar...

Condensation in a Model

Condensation in the Backgammon model

Given the success of the dynamical triangulation approach to simulating two dimensional quantum gravity [1], there has been a concerted effort to employ similar methods in understanding higher dimensional discretized gravity models [2]. In three and four dimensions one does not have the underpinning of matrix models to give confidence in the simulation results, but the general phase diagram of ...

Nonequilibrium model of photon condensation.

We develop a nonequilibrium model of condensation and lasing of photons in a dye filled microcavity. We examine in detail the nature of the thermalization process induced by absorption and emission of photons by the dye molecules, and investigate when the photons are able to reach a thermal equilibrium Bose-Einstein distribution. At low temperatures, or large cavity losses, the absorption and e...

Explosive condensation in a mass transport model.

We study a far-from-equilibrium system of interacting particles, hopping between sites of a 1D lattice with a rate which increases with the number of particles at interacting sites. We find that clusters of particles, which initially spontaneously form in the system, begin to move at increasing speed as they gain particles. Ultimately, they produce a moving condensate which comprises a finite f...