14 citations · 54 across the 14 of their papers we have counts for
Showing 2015Show all
2 papers · 1 filter
math-ph2015★ 4 cited
Correlation inequalities for the quantum XY model
Costanza Benassi, Benjamin Lees, Daniel Ueltschi
We show the positivity or negativity of truncated correlation functions in the quantum XY model with spin 1/2 (at any temperature) and spin 1 (in the ground state). These Griffiths…
math-ph2015★ 5 cited
Existence of Néel order in the S=1 bilinear-biquadratic Heisenberg model via random loops
Benjamin Lees
We consider the general spin-1 SU(2) invariant Heisenberg model with a two-body interaction. A random loop model is introduced and relations to quantum spin systems is proved. Usin…