16 мая 2014 г. · (Creation operators are not observables but their commutation relations follow from the commutators for the field and fields are observables.)

28 июл. 2015 г. · The correct commutation relations for creation/annihilation operators are the following: [a(k),a†(k′)]=(2π)3δ(3)(k−k′).

20 июл. 2020 г. · This spin degree of freedom is an extra part of the creation/annhilation operator and leads to the anti-commutation relation. Note that since ...

14 нояб. 2018 г. · They are the same thing. The two names exist because in quantum field theory they represent adding or removing particles from the state of the system.

14 нояб. 2015 г. · In a complex (non-hermitian) scalar QFT, is it correct that the creation/annihilation operators a,a† (particle) and b,b† (anti-particle) commute?

14 мая 2019 г. · The creation/annihilation operators have their appropriate commutation relations, and an associated number operator, and they form a basis ...

18 сент. 2016 г. · Deriving anti-commutation relation between creation/annihilation operators for Dirac fermions · 3 · Annihilation and Creation Operators in QFT.

6 апр. 2017 г. · The commutation relation between creation and annihilation operator in a quantum field theory is, [a(t,x),a†(t,x′)]=(2π)δ(x−x′).

8 июн. 2018 г. · In order to derive the quantization condition for the creation/annihilation operators I have to rewrite c,c†,d,d† in terms of Ψ and Ψ†.

22 янв. 2020 г. · Using these equations, you can explicitly verify the commutation relation [a→p,a†→q]=(2π)3δ(3)(→p−→q). In practice, it seems like you rarely ...