Bugfix: Initialize nalpha and nbeta in Heisenburg model to avoid mem alloc error.
Bugfix: Initialize nalpha and nbeta in Heisenburg model to avoid mem alloc error.

ruthfranklin/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande