from
by
Xuefeng Bao
Fri Oct 20 2023 09:59:30 (23 hours)
# 1.
The Schr\”odinger equation is universally accepted due to its excellent predictions aligning with observed results within its defined conditions. Nevertheless, it does not seem to possess the simplicity of fundamental laws, such as Newton’s laws of motion. Various insightful attempts have been made to elucidate the rationale behind the Schr\”odinger equation. This paper seeks to review existing explanations and propose some prospectives on the derivation of the Schr\”odinger equation.
Send To > Keep unreadDelete
from
by
Jonathan Oppenheim
Fri Oct 20 2023 09:59:25 (23 hours)
# 2.
Although it’s widely believed that gravity should have a quantum nature like every other force, the conceptual obstacles to constructing a quantum theory of gravity compel us to explore other perspectives. Gravity is not like any other force. It alone defines a universal space-time geometry, upon which quantum fields evolve. We feel gravity because matter causes space-time to bend. Time flows at unequal rates at different locations. The rate at which time flows, and the causal structure it provides, may be required to have a classical description in order for quantum theory to be well-formulated. I discuss arguments for this proposition, but ultimately conclude that we must turn to experiment to guide us.
Send To > Keep unreadDelete
from
Thu Oct 19 2023 09:20:26 (2 days)
# 3.
Guo, Bixin (2023) Next Best Thing—What Can Quantum Mechanics Tell Us About the Fundamental Ontology of the World? [Preprint]
Send To > Keep unreadDelete
from
by
Huw Price, Ken Wharton
Thu Oct 19 2023 09:18:56 (2 days)
# 4.
In this piece, written for a general audience, we propose a mechanism for quantum entanglement. The key ingredient is collider bias. In the language of causal models, a collider is a variable causally influenced by two or more other variables. Conditioning on a collider typically produces non-causal correlations between its contributing causes. This phenomenon can produce associations analogous to Bell correlations, in suitable post-selected ensembles. Such collider artefacts may become real connections, resembling causality, if a collider is ‘constrained’ (e.g., by a future boundary condition). We consider the time-reversed analogues of these points in the context of retrocausal models of QM. Retrocausality yields a collider at the source of an EPR-Bell particle pair, and in this case constraint of the collider is possible by normal methods of experimental preparation. It follows that connections resembling causality may emerge across such colliders, from one branch of the experiment to the other. Our hypothesis is that this constrained retrocausal collider bias is the origin of entanglement. This piece is based on a suggestion first made in arXiv:2101.05370v4 [quant-ph], and is an ancestor of an essay now published online in Aeon magazine [Price & Wharton 2023a]. In an updated version of the argument in arXiv:2309.10969 [quant-ph] we (i) demonstrate its application in a real Bell experiment; and (ii) show that we can do without an explicit postulate of retrocausality
Send To > Keep unreadDelete
from
by
Pierre Lassègues, Mateus Antônio Fernandes Biscassi, Martial Morisse, André Cidrim, Pablo Gabriel Santos Dias, Hodei Eneriz, Raul Celistrino Teixeira, Robin Kaiser, Romain Bachelard, and Mathilde Hugbart
Wed Oct 18 2023 18:00:00 (2 days)
# 5.
Author(s): Pierre Lassègues, Mateus Antônio Fernandes Biscassi, Martial Morisse, André Cidrim, Pablo Gabriel Santos Dias, Hodei Eneriz, Raul Celistrino Teixeira, Robin Kaiser, Romain Bachelard, and Mathilde Hugbart
The authors study the loss of light coherence when scattered by a macroscopic atomic cloud of cold neutral atoms through intensity-intensity correlation measurements. They demonstrate experimentally and theoretically the transition between classical and quantum mechanisms regimes for the coherence loss.
[Phys. Rev. A 108, 042214] Published Wed Oct 18, 2023
Send To > Keep unreadDelete
from
Wed Oct 18 2023 08:42:31 (3 days)
# 6.
Bassi, Angelo and Dorato, Mauro and Ulbricht, Hendrik (2023) Collapse Models: A Theoretical, Experimental and Philosophical Review. Entropy, 25. pp. 1-16.
Send To > Keep unreadDelete
from
Wed Oct 18 2023 08:41:35 (3 days)
# 7.
Huggett, Nick and Thebault, Karim P Y (2023) Finding Time for Wheeler-DeWitt Cosmology. [Preprint]
Send To > Keep unreadDelete
from
Tue Oct 17 2023 05:01:48 (4 days)
# 8.
Veldman, Michael (2023) Mathematizing Metaphysics: The Case of the Principle of Least Action. [Preprint]
Send To > Keep unreadDelete
from
Mon Oct 16 2023 00:05:47 (5 days)
# 9.
Pipa, Francisco (2023) Beyond the Wigner’s friend dilemma: A new indeterminacy-based quantum theory. [Preprint]
Send To > Keep unreadDelete
from
Sat Oct 14 2023 16:14:43 (6 days)
# 10.
Knox, Eleanor and Wallace, David (2023) Functionalism Fit for Physics. [Preprint]
