Numerical and approximate analytical results for the frustrated spin-1/2 quantum spin chain

R. J. Bursill, G. A. Gehring, D. J. J. Farnell +3

We study the $T=0$ frustrated phase of the $1D$ quantum spin-$\frac{1}{2}$ system with nearest-neighbour and next-nearest-neighbour isotropic exchange known as the Majumdar-Ghosh Hami…