The satisfiability equivalent of curing the sign problem is to decide whether a given sentence is satisfiable, while the equivalent of easing is to find the minimal number of clauses that are violated by a sentence. Similarly, results on the computational complexity of curing and easing the non-stoquasticity of a local Hamiltonian H are in one-to-one correspondence with the hardness of satisfiability problems.
Satisfiability | Stoquasticity | Complexity | References |
3SAT | Curing 2 + 1-local H | NP-complete | (19, 20) |
2SAT | Curing strictly 2-local H | In P | (20, 21) |
MAX2SAT | Easing strictly 2-local H | NP-complete | Here |