Heisenberg Feromagnet: Chaotic Phases @ Low Temp

[Petar Mali]

What is approximation of the chaotic phases for Heisenberg feromagnet in
low temperatures?

 

[Petar Mali]

What is approximation of the chaotic phases for Heisenberg feromagnet in
low temperatures?

I don't know is it Bloch approximation or
maybe Holstein–Primakoff representation? And some
explanation about name approximation of the chaotic phases?

 

[charng]

The chaotic phases of a Heisenberg ferromagnet at low temperatures are approximated by the appearance of disordered spin configurations and the absence of long-range magnetic order. This is due to the competing interactions between neighboring spins, leading to a lack of a dominant orientation. As the temperature decreases, the thermal energy decreases and the system becomes more ordered, eventually reaching a phase transition where long-range magnetic order is established. However, at low temperatures, fluctuations and disorder can still occur, leading to a chaotic phase characterized by fluctuations and a lack of well-defined spin orientations. This chaotic phase is of great interest in the study of magnetic materials and can provide insight into the underlying mechanisms of phase transitions and critical phenomena.