Ds. Dean, ON THE METASTABLE STATES OF THE ZERO-TEMPERATURE SK MODE, Journal of physics. A, mathematical and general, 27(23), 1994, pp. 120000899-120000905
We generalize the calculation of the average number of metastable stat
es of the Sherrington-Kirkpatrick spin-glass model at zero temperature
to the case where there is an external magnetic field and the case wh
ere there is an asymmetric bond distribution. The results are in agree
ment with the existence of the AT instability at zero temperature for
all finite values of external field and average bond value. We conclud
e the paper by examining the question of dual metastability, i.e. when
spin configurations are metastable both with and without the presence
of a magnetic field.