Question

When is the Fermi surface a surface of constant mean curvature?

Answer 1

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Fermi surfaces are surfaces of constant energy in reciprocal space. They provide information about the properties of a material in solid state physics.

Constant mean curvature surfaces are a superset of minimal surfaces, which minimize area and have zero mean curvature. Soap bubbles are surfaces of constant mean curvature.
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Answer 2

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Ques》 When is the Fermi surface a surface of constant mean curvature?

Ans》Fermi surface are the surfaces of constant energy in reciprocal space .

They have zero curvature as their mean curvature...

Example - Soap bubbles are the correct examples for it.

Hope it helps

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