OrdnungParameter
Ordnungsparameter, often written as Ordnungsparameter or Ordnungparameter in German, is a concept in physics that describes the degree of order in a system undergoing a phase transition. It is zero in the high-symmetry, disordered phase and nonzero in the ordered phase, signaling spontaneous symmetry breaking.
In the framework of Landau theory, the order parameter is treated as a field that characterizes the
Common examples include the magnetization M in a ferromagnet as the order parameter for magnetic ordering,
In some systems, particularly those with topological order, no conventional local order parameter exists; order is
The concept of an order parameter is central to classifying phase transitions and understanding symmetry breaking