Conjugation of creation and annihilation operators - Fock's

In summary, the conversation is about an exercise involving second quantization and writing the Hamiltonian of a Majorana-Langrangian using creation and annihilation operators. The speaker is unsure of how the operators A_{\vec{k},\lambda}^{\star} and A_{\vec{k},\lambda}^{T} act, and asks if there is a relation between the two. The definition of these operators can be found at a provided link, but the speaker still does not understand how A_{\vec{k},\lambda}^{T} operates.
  • #1
mattocompleto
2
0
Hi,

I'm doing some exercise about second quantization.
In a exercise about spiorial field I have to explicitly write the Hamiltonian of a Majorana-Langrangian, in terms of operators of creation and annihilation: [itex]A_{\vec{k},\lambda}[/itex] that acts on Fock's space.

The point is that during the calculation it is appearing [itex]A_{\vec{k},\lambda}^{\star}[/itex], and [itex]A_{\vec{k},\lambda}^{T}[/itex]. And actually I don't know how these operators act! Does it exits some kind of relation like [itex]A_{\vec{k},\lambda}=A_{\vec{k},\lambda}^{\star}[/itex]?
 
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  • #2

Related to Conjugation of creation and annihilation operators - Fock's

1. What is the concept of conjugation in the context of creation and annihilation operators?

The concept of conjugation in the context of creation and annihilation operators is related to the mathematical operations that are performed on quantum mechanical systems. Conjugation refers to the process of taking the complex conjugate of an operator, which involves flipping the sign of the imaginary component of the operator. In the case of creation and annihilation operators, conjugation is important for understanding the relationship between these two operators and how they act on quantum states.

2. What is the significance of Fock's equation in the study of conjugation of creation and annihilation operators?

Fock's equation, also known as the Fock space representation, is a mathematical framework that is used to describe the behavior of creation and annihilation operators. It provides a way to represent quantum states in terms of a basis of states that are created by applying creation operators to the vacuum state. Fock's equation is significant because it allows us to simplify the mathematical description of these operators and their conjugation properties.

3. How do creation and annihilation operators act on quantum states?

Creation and annihilation operators act on quantum states by raising or lowering the number of particles in the state. The creation operator adds one particle to the state, while the annihilation operator removes one particle. These operators are used to describe the creation and destruction of particles in quantum systems, and their conjugation properties are important for understanding how these operations affect the overall state of the system.

4. What is the commutation relationship between creation and annihilation operators?

The commutation relationship between creation and annihilation operators is given by [a, a†] = 1, where a and a† are the annihilation and creation operators, respectively. This relationship shows that these operators do not commute, meaning that their order matters when applying them to quantum states. This commutation relationship is a fundamental property of creation and annihilation operators and is important for understanding their behavior and properties.

5. How does conjugation affect the Hermitian adjoint of creation and annihilation operators?

Conjugation affects the Hermitian adjoint of creation and annihilation operators by flipping the sign of the imaginary component. This means that the Hermitian adjoint of the conjugate of an operator is equal to the conjugate of the Hermitian adjoint of the original operator. In terms of creation and annihilation operators, this property is important for understanding how these operators act on quantum states and how they are related to each other through conjugation.

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