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Fundamental Irreversibility: Planckian or Schrödinger–Newton?

Wigner Research Centre for Physics, H-1525 Budapest 114, P.O. Box 49, Hungary
Entropy 2018, 20(7), 496; https://doi.org/10.3390/e20070496
Received: 18 May 2018 / Revised: 21 June 2018 / Accepted: 22 June 2018 / Published: 27 June 2018
(This article belongs to the Special Issue Emergent Quantum Mechanics – David Bohm Centennial Perspectives)
The concept of universal gravity-related irreversibility began in quantum cosmology. The ultimate reason for universal irreversibility is thought to come from black holes close to the Planck scale. Quantum state reductions, unrelated to gravity or relativity but related to measurement devices, are completely different instances of irreversibilities. However, an intricate relationship 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. View Full-Text
Keywords: fundamental irreversibility; space-time fluctuations; spontaneous state reduction fundamental irreversibility; space-time fluctuations; spontaneous state reduction
MDPI and ACS Style

Diósi, L. Fundamental Irreversibility: Planckian or Schrödinger–Newton? Entropy 2018, 20, 496.

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