Supersymmetric formulation of polytropic gas dynamics and its invariant solutions

Details Supersymmetric formulation of polytropic gas dynamics and its invariant solutions Supersymmetric formulation of polytropic gas dynamics and its invariant solutions

2011-02-06

arxiv.org/abs/1102.1181v1

Physics

Mathematical Physics

26 pages

Scientific paper

In this paper, a supersymmetric extension of the polytropic gas dynamics equations is constructed through the use of a superspace involving two independent fermionic variables and two bosonic superfields. A superalgebra of symmetries of the proposed extended model is determined and a systematic classification of the one-dimensional subalgebras of this superalgebra is performed. Through the use of the symmetry reduction method, a number of invariant solutions of the supersymmetric polytropic gas dynamics equations are found. Several types of solutions are obtained, including algebraic-type solutions and propagation waves (simple and double waves). Many of the obtained solutions involve arbitrary functions of one or two bosonic or fermionic variables. In the case where the arbitrary functions involve only the independent fermionic variables, the solutions are expressed in terms of Taylor expansions.

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