Autonomous Ticking Clocks from Axiomatic Principles

There are many different types of time keeping devices. We use the phrase ticking clock to describe those which -- simply put "tick" at approximately regular intervals. Various important results have been derived for clocks, and more in pipeline. It is thus understand underlying models on these founded. The aim this paper introduce a new model from axiomatic principles that overcomes concerns community about physicality assumptions made previous models. [arXiv:1806.00491] achieves high accuracy, yet lacks autonomy less accurate [10.1103/PhysRevX.7.031022]. Importantly, we here best both models: it retains [10.1103/PhysRevX.7.031022] while allowing accuracies [arXiv:1806.00491]. What more, revealed be special case model.