Electronic Properties of Organic Conductors by Takehiko Mori

Author:Takehiko Mori
Language: eng
Format: epub
Publisher: Springer Japan, Tokyo

(5.22)

(5.23)

(5.24)

Here {} is similar to the commutator described in Sect. 1.​6, but the subtraction is replaced by the addition. This is called anticommutator. Only the anticommutator of the conjugated c i and concerning to the same state gives one, while all other anticommutators afford zero. If we use a commutator instead of an anticommutator, we can similarly define creation and annihilation operators of Bose particles.

Next, we define and the eigenvalue N i ψ = nψ. When we operate N i to c i ψ, the result is

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