Mermin-Wagner theorem
See also
References
- N. D. Mermin and H. Wagner "Absence of Ferromagnetism or Antiferromagnetism in One- or Two-Dimensional Isotropic Heisenberg Models", Physical Review Letters 17 pp. 1133-1136 (1966)
- Jürg Fröhlich and Charles Pfister "On the absence of spontaneous symmetry breaking and of crystalline ordering in two-dimensional systems", Communications in Mathematical Physics 81 pp. 277-298 (1981)
- M. Fannes, P. Vanheuverzwijn, and A. Verbeure "Quantum energy-entropy inequalities: A new method for proving the absence of symmetry breaking", Journal of Mathematical Physics 25 pp. 76-78 (1984)