Abstract
Let βcI be the critical inverse temperature in an Ising ferromagnet with pair interactions and let βcR be the critical temperatures in the plane rotor (classical xy model) with the same couplings. We prove that βcR ≥ 2βcI. This yields the lower bound βc ≥ 0.88 for the Kosterlitz-Thouless transition.
Original language | English (US) |
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Pages (from-to) | 281-282 |
Number of pages | 2 |
Journal | Physics Letters A |
Volume | 76 |
Issue number | 3-4 |
DOIs | |
State | Published - Mar 31 1980 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy