Is there current research going on in quantum mechanics?

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Discussion Overview

The discussion revolves around the current state of research in quantum mechanics (QM), exploring whether theoretical research is still being conducted in the field or if it primarily serves as a tool for other areas of study. Participants also consider the nature of academic paths related to QM, comparing it to high energy physics.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant expresses interest in QM and notes areas like quantum cryptography, quantum computing, and quantum optics as active research fields, questioning the theoretical research in QM itself.
  • Another participant asserts that basic quantum mechanics was largely complete by the 1920s and suggests it is primarily a tool used in other fields.
  • Some participants mention ongoing research into foundational issues in QM, such as Bell's Theorem and the CHSH inequality, highlighting that these topics are regularly discussed and tested through experiments.
  • Quantum chaos is introduced as another area of research that examines the relationship between quantum and classical dynamics, particularly in chaotic systems.
  • A participant points to arxiv.org as evidence of active research in quantum physics, noting the frequent publication of new papers.
  • There is a challenge to the claim that QM was complete in the 1920s, emphasizing the importance of context in quoting others.
  • One participant compares researching quantum mechanics to making buggy whips, suggesting it is a niche area with few pursuing a PhD specifically in QM.

Areas of Agreement / Disagreement

Participants express differing views on the status of research in quantum mechanics, with some arguing it is a completed field while others highlight ongoing theoretical and experimental inquiries. The discussion remains unresolved regarding the extent and nature of current research in QM.

Contextual Notes

There are limitations in the discussion regarding the definitions of what constitutes "research" in QM and the assumptions about the completeness of the field. The perspectives shared reflect a range of interpretations and experiences in the academic landscape of quantum mechanics.

Enne
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I have been recently introduced to QM and I am deeply interested in it. I have come to know that quantum cryptography, quantum computing, and quantum optics are the hot areas where research is going on. But I'm curious, is there theoretical research going on for understanding of the quantum world? Or is the quantum theory just like a tool to explore other things, like condensed matter?

Do people do a PhD in 'quantum mechanics' the same way as 'high energy physics'? Or is QM too broad a topic.Forgive me if this is a naive question.
 
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Basic quantum mechanics was pretty much complete in the 1920s. It's no longer an area of study. You're right: it is a tool that people use (from physicists to some engineers).
 
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There are some people who do research into "foundational issues" such as Bell's Theorem and the CHSH inequality, which (roughly speaking) quantify the "weirdness" of QM. There are important experiments that test these things. Browse around our Quantum Physics forum for threads related to Bell's Theorem, in particular. It's a regular subject of discussion here.
 
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Quantum chaos, albeit (by definition) not exclusively "quantum mechanical", is another area of research that may be of interest to the OP. There one is concerned with the relationship between quantum and classical dynamics, particularly in case the latter is chaotic.
 
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Go to arxiv.org, and click on "quantum physics". You will see that it is an active area of current research with about twenty new papers posted a day. It was not "complete in the 1920s".
 
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Meir Achuz said:
It was not "complete in the 1920s".

Nobody said it was. Don't leave out descriptive text when you quote people.
 
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Researching quantum mechanics itself (as opposed to using it as a tool) is about like buggy whip making. There are, in fact, still buggy whip makers today, and if a craftsman or manufacturer had both the opportunity and interest in making a few, more power to them.

That doesn't make it a wise career choice, and you'll find very few people who have a PhD like what you're suggesting.
 
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