Introduction to order parameter fields

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Discussion Overview

The discussion revolves around the topic of order parameter fields in the context of statistical mechanics, specifically focusing on the classification of defects using homotopy. Participants are seeking and providing recommendations for introductory graduate-level readings on these concepts.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant is looking for additional reading materials on order parameter fields and the use of homotopy for classifying defects, specifically at an introductory graduate level.
  • Another participant suggests Nakahara's "Geometry, Topology, and Physics" for its sections on defects in nematic liquid crystals and textures in superfluid He-3, while noting that Fradkin's "Field Theories of Condensed Matter Physics" may be more challenging without a background in field theory.
  • A participant mentions having some familiarity with field theory concepts but limited experience with calculations, expressing gratitude for the recommendations.
  • One participant expresses caution about the suitability of the suggested references, indicating that Nakahara may cover too much geometry and topology, and that Fradkin focuses more on strongly correlated electron systems rather than systematically addressing the topic of interest.
  • A recommendation for Mirmin's review on the classification of topological defects in order parameters is made, described as a classic and well-regarded resource among physicists.
  • A later reply indicates enthusiasm for the suggested review, confirming that it was obtained for further reading.

Areas of Agreement / Disagreement

Participants generally agree on the value of the suggested references, though there is some disagreement regarding their suitability for the specific needs of the original poster. The discussion remains open with multiple perspectives on the best resources.

Contextual Notes

Some limitations are noted regarding the depth and focus of the suggested texts, with concerns about the breadth of topics covered in Nakahara and the specific focus of Fradkin's work. There is also an acknowledgment of the original poster's varying familiarity with field theory concepts.

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Hi folks,

I'm taking a class in statistical mechanics out of Sethna's text. Part of the course involves student presentations. I've settled on his chapter on order parameters, broken symmetry and topology. Its a relatively short chapter and I'd like to read some more.

I'm looking for some more to read about order parameter fields at an introductory grad level and how calculations using homotopy can be used to classify defects.

Thanks in advance for any recommendations.
 
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There are sections on defects in nematic liquid crystals and textures in superfluid He-3 in Nakahara, Geometry, Topology, and Physics. I'm sure many more topics are covered in Fradkin's Field Theories of Condensed Matter Physics, but that might be a bit tougher to dive into if you don't have some field theory background.
 
I have 'toyed' a bit with field theory so am familiar with some of the ideas, though I haven't done many calculations. I'll check out the books, thank you.
 
I think that the references fzero suggest are very good, but might not be excactly what you are looking for. Nakahara covers too much geometry/topology beyond what you need and might be hard to grasp anything useful in short time. Fradkin is more concerned with strongly correlated electron systems, while topological defects play a role in some parts, he dosn't cover what you want systematically. But both books are highly recommendable thou!

For (homotopy) classification of topological defects in order parameters, Mirmins review is a classic and highly praised among physicists! Click http://rmp.aps.org/abstract/RMP/v51/i3/p591_1" .
 
Last edited by a moderator:
Holy cow yes...I just grabbed it thanks! This looks good.
 

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