The following pairwise Pauli matrices are sufficient to capture the power of QMA complexity class.
$\{I,\ I\otimes X,\ I\otimes Z,\ X\otimes I,\ Z\otimes I,\ X\otimes X,\ X\otimes Z,\ Z\otimes X, \ Z\otimes Z \}$
as mentioned in equation 10 of [Biamonte and Love 2008].
The above paper refers to another paper by Dave Bacon:
The QMA-completeness of this subset of Hamiltonians was found independently by D. Bacon; preprint, (2007).
Query: I am unable to recover the above reference from the internet (D. Bacon's google scholar page).
I would like to see the proof of the QMA-completeness. Kindly let me know if someone has seen the proof or related resource for it.
