Discrete time from quantum physics

Discrete Time from Quantum Physics

’t Hooft has recently developed a discretisation of (2+1) gravity which has a multiplevalued Hamiltonian and which therefore admits quantum time evolution only in discrete steps. In this paper, we describe several models in the continuum with single-valued equations of motion in classical physics, but with multiple-valued Hamiltonians. Their time displacements in quantum theory are therefore ob...

Time Asymmetric Quantum Physics

Mathematical and phenomenological arguments in favor of asymmetric time evolution of micro-physical states are presented.

On Time in Quantum Physics

First, I briefly review the different conceptions of time held by three rival interpretations of quantum theory: the collapse of the wave-packet, the pilotwave interpretation, and the Everett interpretation (Section 2). Then I turn to a much less controversial task: to expound the recent understanding of the time-energy uncertainty principle, and indeed of uncertainty principles in general, tha...

Quantum Physics: A Case for Anti-Realism?

Time and Temporality – from Whitehead to quantum physics

The question which has to be answered concerning Whiteheads metaphysic is whether his system is completed with Process and Reality [29] or whether his metaphysics only comes fully into view in his later works (esp. Adventures of Ideas [30] and Modes of Thought [31]). It will be argued that his main ideas are already fully developed in Process and Reality. Especially regarding the concept of tim...