Abstract: Symmetry breaking of temperature field in spatially distributed pure dissipative systems induced by chemical reaction diffusion heat conduction couplings is analyzed in this paper. It is shown that this kind of self organizing processes in the temperature field is inevitable even for single component linear chemical reaction diffusion heat conduction system under a certain boundary conditions. As a prototype of temperature field in pure dissipative systems, the small spatially extended non isothermal Lindedman model, is further studied, both by analytic solution and with computer simulation. The results show that the threshold of spatio temporal symmetry breaking in the temperature field is dominated not only by the intrinsic parameters but also by the constraints forced on the system externally. An approach for bringing out, adjusting or avoiding this spatio temporal temperature pattern for utilization is then suggested.

Key words: Chemical reaction diffusion heat conduction couplings, Symmetry breaking, Temperature field, Lindeman model