Dissipative System
A dissipative system (or dissipative structure ) is a open system which operates far from the thermodynamic balance in an environment which exchanges energy, Matière or Entropie. A dissipative system is characterized by the spontaneous appearance of a Brisure of space symmetry (anisotropy) which can sometimes result in a structure complexes chaotic. The term “structures dissipative” was created by Ilya Prigogine.
A simple example is the Cellules of Bénard. More complex examples include the Laser S, the Réactions Belousov-Zhabotinsky or even the Vie it even.
Another notable aspect of the dissipative structures is the crack of temporal symmetry which they have.
Quantum dissipative systems
As the quantum Mécanique strongly depends on the Hamiltonian Mécanique, it is not intrinsically able to describe the dissipative systems. In theory one can couple the system slightly, say an oscillator, with a bath, i.e. an assembly of many oscillators in thermal balance with a wide band spectrum, and follow (on average) the evolution of the bath. That produced a principal equation which is a special case of a more general situation called the equation of Lindblad.
See also: Car-organization - Autopoïèse - System theory dynamic and chaotic ---- Another significance of a “dissipative system” is that which dissipates heat like a radiator.
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