Weekly Papers on Quantum Foundations (19)

Parity violation in weak interactions: How experiment can shape a theoretical framework  ScienceDirect Publication: Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics on 2019-5-18 1:07am GMT Publication date: Available online 17 May 2019 Source: Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics Author(s):… Read more →

Weekly Papers on Quantum Foundations (18)

The Born rule. (arXiv:1905.03332v1 [quant-ph])  quant-ph updates on arXiv.org on 2019-5-11 1:18am GMT Authors: Yurii V. Brezhnev We deduce the Born rule. No use is required of quantum postulates. One exploits only rudimentary quantum mathematics — a linear, not Hilbert’s, vector space — and empirical notion of the statistical length of a state. Its statistical nature comes from experimental micro-events: the… Read more →

Weekly Papers on Quantum Foundations (17)

An experimental Scheme for Gravitational Scattering in Microscale: The effect of spatial superposition of mass on the microstructure of space-time. (arXiv:1905.00484v1 [quant-ph])  quant-ph updates on arXiv.org on 2019-5-04 10:15am GMT Authors: Sahar Sahebdivan In this paper, we are exploring the feasibility of observing non-classical features of gravity in a low-energy regime in a quantum optomechanical experiment. If gravity is to have… Read more →

Weekly Papers on Quantum Foundations (16)

A minisuperspace model of compact phase space gravity. (arXiv:1904.11338v1 [gr-qc])  hep-th updates on arXiv.org on 2019-4-27 12:44am GMT Authors: Danilo Artigas Guimarey, Jakub Mielczarek, Carlo Rovelli The kinematical phase space of classical gravitational field is flat (affine) and unbounded. Because of this, field variables may tend to infinity leading to appearance of singularities, which plague Einstein’s theory of gravity. The purpose of this… Read more →

Weekly Papers on Quantum Foundations (15)

A new kind of cyclic universe. (arXiv:1904.08022v1 [gr-qc] CROSS LISTED)  hep-th updates on arXiv.org on 2019-4-20 12:59am GMT Authors: Anna Ijjas, Paul J. Steinhardt Combining intervals of ekpyrotic (ultra-slow) contraction with a (non-singular) classical bounce naturally leads to a novel cyclic theory of the universe in which the Hubble parameter, energy density and temperature oscillate periodically, but the scale factor grows by… Read more →

Weekly Papers on Quantum Foundations (13,14)

Searching for quantum black hole structure with the Event Horizon Telescope. (arXiv:1904.05287v1 [gr-qc] CROSS LISTED)  hep-th updates on arXiv.org on 2019-4-13 1:28am GMT Authors: Steven B. Giddings The impressive images from the Event Horizon Telescope sharpen the conflict between our observations of gravitational phenomena and the principles of quantum mechanics. Two related scenarios for reconciling quantum mechanics with the existence of… Read more →

Realism and Causality II: Retrocausality in Energetic Causal Sets

Eliahu Cohen, Marina Cortês, Avshalom C. Elitzur, Lee Smolin (Submitted on 13 Feb 2019 (v1), last revised 19 Mar 2019 (this version, v2)) https://arxiv.org/abs/1902.05082v2 We describe a new form of retrocausality, which is found in the behaviour of a class of causal set theories, called energetic causal sets (ECS). These are discrete sets of events, connected by causal relations. They have three orders:… Read more →