Claus Kiefer

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Weekly Papers on Quantum Foundations (21)

Gravitational Machines. (arXiv:2305.10470v1 [gr-qc])   from  physics.hist-ph updates on  by  Freeman J. Dyson Fri May 19 2023 09:37:27 (1 day) # 1. A gravitational machine is defined as an arrangement of gravitating masses from which useful energy can be extracted. It is shown that such machines may exist if the masses are of normal astronomical size. A simple example… Read more →

Weekly Papers on Quantum Foundations (45)

Gravitational Decoherence: A Thematic Overview. (arXiv:2111.02462v1 [gr-qc]) 上午10:24 | Charis Anastopoulos, Bei-Lok Hu | quant-ph updates on Gravitational decoherence (GD) refers to the effects of gravity in actuating the classical appearance of a quantum system. Because the underlying processes involve issues in general relativity (GR), quantum field theory (QFT) and quantum information, GD has fundamental theoretical significance. There is… Read more →

Weekly Papers on Quantum Foundations (52)

OBITUARY FOR HEINZ-DIETER ZEH (1932 — 2018)  International Journal of Quantum Foundations – International Journal of Quantum Foundations on 2018-12-29 9:42am GMT Volume 5, Issue 1, pages 11-15 Claus Kiefer [Show Biography] Claus Kiefer studied physics and astronomy at the Universities of Heidelberg and Vienna. He earned his PhD from Heidelberg University in 1988 under the supervision of H.-Dieter Zeh. He has… Read more →


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