In quantum mechanics, for systems where the total number of particles may not be preserved, the number operator is the observable that counts the number of ...

3 июн. 2016 г. · In quantum mechanics a†a is defined as the number operator, where [a,a†]=1. Why cannot we define aa† as number operator instead of the usual ... Number operator in quantum field theory? Total number operator and second quantization Physical significance of number operator in QFT Другие результаты с сайта physics.stackexchange.com

Creation operators and annihilation operators are mathematical operators that have widespread applications in quantum mechanics

Продолжительность: 7:29
Опубликовано: 3 июн. 2018 г.

In this paper we take the quantum mechanical Hamiltonian and factorize it into two new operators, raising and lowering operator.

The number operator of a harmonic oscillator tells us its energy level in terms of an integer n. When applied to a harmonic oscillator state, this gives its ...

31 окт. 2021 г. · Number operator in QM. How does a number operator make sense at all considering that wavefunctions can overlap? I read in some textbook a few ...

The mean value of an operator is in quantum optics calculated by 'sandwiching' this operator ... number operator, Na. + is also an eigenstate of the same operator ...

This operator is called the particle number operator; namely, it is the operator of the total number of electrons in the system. Some properties of the ...