How Does Time Ordering Work in Quantum Mechanics?

Click For Summary

Discussion Overview

The discussion centers around the concept of time ordering in quantum mechanics, exploring its implications and connections to quantum entanglement. Participants reference academic papers that delve into the theoretical underpinnings and potential applications of these ideas, comparing them to classical mechanics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant highlights a paper that derives temporal Bell inequalities, suggesting that quantum mechanics violates assumptions of realism and locality in time, which could enable tasks not possible classically.
  • Another participant questions what is considered "shocking" about the paper, noting that the author is a well-respected researcher and implying that the work is part of mainstream discourse.
  • A third participant reiterates the interest in the paper, emphasizing that the shocking aspect is meant positively, indicating a fascination with the topic.
  • A different paper is introduced, which examines time ordering in both quantum and classical mechanics, suggesting a comparative approach to understanding the concept.

Areas of Agreement / Disagreement

There is no clear consensus on what constitutes the shocking aspect of the discussed papers, with participants expressing varying levels of intrigue and interpretation of the significance of the findings.

Contextual Notes

Participants reference specific academic papers without providing detailed summaries or critiques, which may limit understanding of the full context and implications of the arguments presented.

limarodessa
Messages
51
Reaction score
0
It is shocking paper:

http://arxiv.org/abs/quant-ph/0402127

Quantum Entanglement in Time

Caslav Brukner, Samuel Taylor, Sancho Cheung, and Vlatko Vedral,

The temporal Bell inequalities are derived from the assumptions of realism and locality in time.
It is shown that quantum mechanics violates these inequalities and thus is in conflict with the two
assumptions. This can be used for performing certain tasks that are not possible classically. Our
results open up a possibility for introducing the notion of entanglement in time in quantum physics
 
Physics news on Phys.org
OK, I'll bite: what is the shocking part? Brukner is a top researcher and he is a regular contributor to the literature. So this is mainstream work. (Of course, most of that is amazing to me in its own right.) But I am guessing you are fascinated by a particular point, and was hoping you might share for the sake of continued discussion. :smile:
 
DrChinese said:
OK, I'll bite: what is the shocking part? Brukner is a top researcher and he is a regular contributor to the literature. So this is mainstream work. (Of course, most of that is amazing to me in its own right.) But I am guessing you are fascinated by a particular point, and was hoping you might share for the sake of continued discussion. :smile:

Shocking - in good sense (meaning)

It is extremely interesting
 
Also interesting:

http://arxiv.org/abs/quant-ph/0312179

Quantum time ordering and degeneracy. I: Time ordering in quantum mechanics
Authors: J. H. McGuire, A. L. Godunov, Kh. Kh. Shakov, Kh. Yu. Rakhimov, A. Chalastaras
(Submitted on 21 Dec 2003)
Abstract: We examine how time ordering works in quantum mechanics and in classical mechanics.
 

Similar threads

Graduate Is delayed choice remote entanglement of photons derived from TDSE?
  • · Replies 58 ·
2
Replies
58
Views
5K
High School Quantum Entanglement: Hidden Information vs. Time
  • · Replies 19 ·
Replies
19
Views
4K
Undergrad Compatibility of Quantum Mechanics and Special Relativity
  • · Replies 43 ·
2
Replies
43
Views
6K
High School Is spacetime a quantum error correcting code?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Understanding Barandes' microscopic theory of causality
  • · Replies 456 ·
16
Replies
456
Views
27K
Graduate Does Antony Valentini's "sub-quantum measurement" really work?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad 'speed' of spooky action vs delayed choice
  • · Replies 17 ·
Replies
17
Views
3K
Graduate Loophole-free test of local realism via Hardy's violation
  • · Replies 37 ·
2
Replies
37
Views
7K
Graduate How Does Quantum Entanglement Work?
  • · Replies 17 ·
Replies
17
Views
3K
Graduate Entanglement Between Photons that have Never Coexisted
  • · Replies 47 ·
2
Replies
47
Views
11K