Fundamental Irreversibility: Planckian or Schrödinger–Newton?Entropy 20(7)
The inception of a universal gravity-related irreversibility took place originally in quantum cos- mology. The ultimate reason of universal irreversibility is thought to come from black holes close to the Planck scale. Completely different instances of irreversibilities are quantum state reductions unrelated to gravity or relativity but related to measurement devices.
However, an intricate relation- ship between Newton gravity and quantized matter might result in fundamental and spontaneous quantum state reduction — in the non-relativistic Schrödinger-Newton context. The above two concepts of fundamental irreversibility emerged and evolved with few or even no interactions.
The purpose here is to draw a parallel between the two approaches first, and to ask rather than answer the question: can both the Planckian and the Schrödinger-Newton indeterminacies/irreversibilities be two faces of the same universe. A related personal note of the author’s 1986 meeting with Aharonov and Bohm is appended.
The article was published in: Entropy 20(7): 496.
This work was supported (in part) by the Fetzer Franklin Fund of the John E. Fetzer Memorial Trust.