Chaplygin gas with field-dependent Poincare symmetry
Abstract
The relativistic generalization of the Chaplygin gas, put forward by Jackiw and Polychronakos, is derived in Duval's Kaluza-Klein framework, using a universal quadratic Lagrangian. Our framework yields a simplified proof of the field-dependent Poincar\'e symmetry Our action is related to the usual Nambu-Goto action [world volume] of d-branes in the same way as the Polyakov and the Nambu action are in strings theory.
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