Chaplygin-Kalb-Ramond Quartessence

(2) University of Cape Town; Croatia; Gary B. Tupper (2); Neven Bilic (1); Raoul D. Viollier (2) ((1) Rudjer Boskovic Institute; Rondebosch; South Africa); Zagreb

arxiv: hep-th/0504082 · v2 · submitted 2005-04-09 · ✦ hep-th · astro-ph· gr-qc

Chaplygin-Kalb-Ramond Quartessence

Neven Bilic (1) , Gary B. Tupper (2) , Raoul D. Viollier (2) ((1) Rudjer Boskovic Institute , Zagreb , Croatia , (2) University of Cape Town , Rondebosch , South Africa) This is my paper

classification ✦ hep-th astro-phgr-qc

keywords formationquartessencestructureadiabaticallowbecomesbranechaplygin

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Unified dark matter/energy models (quartessence) based upon the Chaplygin gas D-brane fail owing to the suppression of structure formation by the adiabatic speed of sound. Including string theory effects, in particular the Kalb-Ramond field which becomes massive via the brane, we show how nonadiabatic perturbations allow successful structure formation.

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Chaplygin-Kalb-Ramond Quartessence

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