1207.2755 (Poulomi Sadhukhan et al.)

Signature of special behaviours of $1/r^2$ interaction in the quantum
entanglement entropy    [PDF]

Poulomi Sadhukhan, Somendra M. Bhattacharjee

We study the bipartite von Neumann entropy of two particles interacting via a long-range scale-free potential $V(r)\sim -g/r^2$ in three dimensions, close to the unbinding transition. The nature of the quantum phase transition changes from critical ($-3/4View original: http://arxiv.org/abs/1207.2755