Figure 4

Off-diagonal cuts of the reduced single-particle density matrix, \(m(x)=\rho (x,-x)\) and \(h(x)=\rho (x,0)\) for the system of \(N=3\) and \(N=4\) particles and different interaction strengths confined in an asymmetric double-well (corresponding to the second column in Fig. 3). Again, predictions of the ansatz are in full agreement with the numerically exact results.