η-Exponents in the one dimensional antiferromagnetic Heisenberg model with next to nearest neighbour coupling

C. Gerhardt, A. Fledderjohann, E. Aysal +3

We investigate the critical exponents ${\eta }_3(\alpha ,M),{\eta }_1(\alpha ,M)$ associated with the singularities in the longitudinal and transverse structure factors of the one dimensional antiferroma…