Spontaneous collapse models are proposed modifications to quantum mechanics which aim solve the measurement problem. In this article we will consider attempt extend a specific spontaneous model, Ghirardi-Rimini-Weber model (GRW), be consistent with special relativity. We present condition that relativistic GRW must meet for three cases: single particle, N distinguishable particles, and indistin...

We explore the physical consequences of a scenario when standard Hermitian Nambu--Jona-Lasinio (NJL) model spontaneously develops non-Hermitian PT-symmetric ground state via dynamical generation an anti-Hermitian Yukawa coupling. demonstrate emergence noncompact (NH) symmetry group which characterizes NH state. show that is broken both in weak- and strong-coupling regimes. In chiral limit at st...