Graduate General definition of interferences clarification

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SUMMARY

The discussion focuses on the definition and classification of interferences in physics, particularly in relation to light interferences and quantum phenomena such as the Delayed Choice Quantum Eraser experiment. Participants emphasize the complexity of defining interferences due to their pervasive nature in physics, especially within field theory and quantum mechanics. The conversation highlights the need for precise definitions and citations for various types of interferences, as well as the challenges in distinguishing between different forms of interference, such as physical wave interferences and correlations of events.

PREREQUISITES
  • Understanding of quantum mechanics principles, particularly the superposition principle.
  • Familiarity with field theory in physics.
  • Knowledge of the Delayed Choice Quantum Eraser experiment.
  • Basic concepts in information theory related to interference.
NEXT STEPS
  • Research the classification of interferences in quantum mechanics.
  • Study the implications of the superposition principle in various physical phenomena.
  • Examine scholarly articles on light interferences and their applications.
  • Explore the relationship between interference and correlations in quantum experiments.
USEFUL FOR

Physicists, quantum mechanics researchers, and anyone interested in the theoretical foundations of interferences in physics and their applications in experimental settings.

Leo1233783
I require your help to list all phenomena described as interferences in physics ( as teached nowadays ) with their citations in scholar documents if they are not well known by non-specialists. I am open to adjacent domains like information theory and mathematics.

There are already light interferences which are well documented.
The word is also used to analyze the Delayed choice quantum eraser experiment which is about photons jointly detected.

What are the other cases of original and modern interferences citations?
How to classify this concept?

I am not looking for paradoxes, just precise definition(s) to refer in an article. If it is a solid concept and not a class of emergent and completely different concepts, I should want to be able to state "that are interferences consistent with the definition" or the opposite.
 
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This is, as far as I can see, a unfulfillable wish. Since (almost) all of physics uses field theory as its conceptual basis, it's hard to find anything that's not related to some kind of interference. In quantum theory, which is a linear theory, it's in the very foundations in form of the superposition principle. So we need some better defined problem or phenomenon you want to understand.
 
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Thanks for your reply.
I think the same.

Thus, some marvel at interferences between physical wave(s), others between correlations of events, but interference is a vague concept.

I was trying to discriminate the 2 and to ask "if the experiments, reputed to be of the 1st kind were of the 2nd type" ? And to note that only the first fit the condition of marvellous superpositions of "physical objects", eluding what the latter means exactly.

We received this morning fresh raw Bell data from credible experimentalists with the highest level of electrons pairs detection ever seen, from 15% to 85% with some settings. Thus, I change my mind ... I'm not stubborn but need solid evidence. The fact remains that the optical experiments were not conclusive with their tiny detection level.
 
Time reversal invariant Hamiltonians must satisfy ##[H,\Theta]=0## where ##\Theta## is time reversal operator. However, in some texts (for example see Many-body Quantum Theory in Condensed Matter Physics an introduction, HENRIK BRUUS and KARSTEN FLENSBERG, Corrected version: 14 January 2016, section 7.1.4) the time reversal invariant condition is introduced as ##H=H^*##. How these two conditions are identical?

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