  We investigate the ground state of 2D electron gas in Quantum Hall regime at
the filling factor slightly deviating from unity, that can be viewed as a
sparse lattice of skyrmions. We have found that in the low density limit
skyrmions are bound in pairs, those forming the actual lattice. We have shown
that at further density increase the lattice undergoes a quantum phase
transition, an analogue of superconducting phase transition in Josephson
junction arrays.
