Maths needed to study QM and GR?

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Discussion Overview

The discussion focuses on the mathematical subjects necessary for understanding Quantum Mechanics (QM) and General Relativity (GR). Participants explore various mathematical fields and their relevance to these advanced topics in physics.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Some participants suggest that Tensor Analysis and differential geometry are essential for understanding General Relativity.
  • Others propose that for Quantum Mechanics, differential equations, linear algebra, and group theory are necessary.
  • One participant mentions that Hilbert spaces and potentially category theory could also be relevant for QM.
  • A question is raised about the application of topology in General Relativity, with a participant asserting its widespread use.
  • Another participant notes that while advanced mathematical topics like tensor geometry and functional analysis are broad, much of the required mathematics is typically covered in physics courses.
  • It is suggested that additional mathematics may be beneficial for those interested in further research in mathematical physics.

Areas of Agreement / Disagreement

Participants generally agree on the importance of specific mathematical subjects for GR and QM, but there are varying opinions on the necessity and application of certain areas, such as topology and category theory. The discussion remains unresolved regarding the extent to which advanced mathematics is required.

Contextual Notes

Some claims about the necessity of specific mathematical subjects depend on the level of sophistication of the courses being considered. There is also a lack of consensus on the practical application of certain mathematical fields in physics.

Lorentz
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What Maths subjects should I study to understand Quantum Mechanics and General Relativity?
 
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As far as I know, in order to fully understand GR, you might want to take a Tensor Analysis Class, along with a differential geometry class. For QM, i think you basically the mathematics required when you are learning it.
 
For GR you need tensor analysis, differential geometry, and for a sufficiently sophisticated course, topology.

For QM you need differential equations, linear algebra, and group theory.
 
Hilbert spaces wouldn't go amiss and if you want to look to the future then category theory too.
 
Tom Mattson said:
For GR you need tensor analysis, differential geometry, and for a sufficiently sophisticated course, topology.

Where does one use topology in general relativity?
 
Tensor geometry, diff topology, and functional analysis are very broad subjects. A lot of what you study in a strict maths class you won't really use in physics. Generally the mathematics you need will be taught in the physics class.

Of course, if you have an interest in doing further work/research in mathematical physics then doing the extra maths is very helpful because you may find interesting applications.
 

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