Understanding Landau Levels for 3D Fermionic Gas in Magnetic Field

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Discussion Overview

The discussion revolves around understanding Landau levels for a three-dimensional fermionic gas in a uniform magnetic field. Participants are exploring the challenges of finding appropriate sources that detail the solutions to the Dirac equation in this context, particularly focusing on the degeneracy of Landau levels and the associated density of states.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • A beginning graduate student expresses difficulty in finding sources that explain Landau levels for 3D fermions, particularly regarding the Dirac equation.
  • The student mentions two papers they have read but finds them insufficient for understanding the integration measure related to density of states.
  • Some participants inquire about the specific papers the student has read and suggest looking for references in other papers or textbooks.
  • One participant suggests a book by Fuxiang Han, noting uncertainty about its coverage of Landau levels for 3D fermions.
  • Another participant echoes the suggestion of the book by Fuxiang Han, indicating they have purchased it but are unsure if it addresses the specific topic of interest.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the availability of comprehensive sources for Landau levels in 3D fermions, and multiple viewpoints regarding suitable references are presented.

Contextual Notes

The discussion highlights limitations in available literature on the specific topic of Landau levels for 3D fermions, with participants noting that most existing resources focus on two-dimensional systems in solid-state physics.

Sunny Singh
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TL;DR
Need an explanation of dimensionality reduction in this case.
I am a beginning graduate student and I've been assigned a paper which uses landau levels for 3d fermionic gas in uniform background magnetic field. I am having trouble finding a proper source which deals with solution of dirac equation in such a case. With the two papers that i have found which talks about it, i am finding it difficult to understand the degeneracy of landau levels and the associated density of states when it comes to finding the integration measure. Can you please suggest me a source, either in a book or any research article which explains landau levels for 3d fermions in detail?
 
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Which two papers have you read? Aren't there references to other papers or even textbooks?
 
vanhees71 said:
Which two papers have you read? Aren't there references to other papers or even textbooks?
This is the first one: https://arxiv.org/abs/0705.4275
and the second one: https://arxiv.org/abs/1812.08886The one book that i found which deals with this problem is: Quantum Electrodynamics by Akhiezer and Berestetskii.

But given that the problem statement seems so simple i thought this must have been dealt with in many more books or papers but even though some books have a paragraph or two on this, none of them discuss the structure of landau levels and density of states in the direction perpendicular to the Pz motion (constant B in z direction) except the book i mentioned above. I was hoping that someone here would have experience with the structure of landau levels in case of 3d fermions since most of landau level stuff online is on electrons confined in 2 dimensions in the context of solid state physics.
 
There's a relatively new book by Fuxiang Han which you can look at amazon.

I bought the problem book, while I needed also to buy the main text.
I am not sure it covers Landau levels of 3d fermions, but you can give it a look if your library has a copy.
 
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MathematicalPhysicist said:
There's a relatively new book by Fuxiang Han which you can look at amazon.

I bought the problem book, while I needed also to buy the main text.
I am not sure it covers Landau levels of 3d fermions, but you can give it a look if your library has a copy.
Thanks, i'll look into it.
 

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