O. Oreshkov

Time-reparameterisation invariant quantum evolution law: the lack of absolute time does not imply a stationary global state

We challenge the common belief that if there is no absolute time parameter in physics, a quantum system described without reference to an external clock can be assumed to be in a stationary state of its Hamiltonian. We present a time-reparameterisation invariant quantum evolution law, which for a given initial conditio...