Is there an Aoki phase in quenched QCD?
  We argue that quenched QCD has non-trivial phase structure for negative quark mass, including the possibility of a parity-flavor breaking Aoki phase. This has implications for simulations with domain-wall or overlap fermions. 
Maarten Golterman (SFSU), Stephen Sharpe (Univ. Washington), Robert   Singleton Jr. (LANL)