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Qmechanic ♦
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DanielC
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Why is the concept of state kets not used in realtivisticrelativistic quantum mechanics?

In SakuraisSakurai's Quantum Mechanics the concept of a Hilbert Spacespace underlying classical quantum wave mechanics (Schrödinger equation) is extensively developed.

But when dealing with the Dirac equation this concept is dropped and one only works in the position basis (wave mechanics). Why is it that we never use the abstract bra-ket-formulation when dealing with relativistic QM?

Why is the concept of state kets not used in realtivistic quantum mechanics?

In Sakurais Quantum Mechanics the concept of a Hilbert Space underlying classical quantum wave mechanics (Schrödinger equation) is extensively developed.

But when dealing with the Dirac equation this concept is dropped and one only works in the position basis (wave mechanics). Why is it that we never use the abstract bra-ket-formulation when dealing with relativistic QM?

Why is the concept of state kets not used in relativistic quantum mechanics?

In Sakurai's Quantum Mechanics the concept of a Hilbert space underlying classical quantum wave mechanics (Schrödinger equation) is extensively developed.

But when dealing with the Dirac equation this concept is dropped and one only works in the position basis (wave mechanics). Why is it that we never use the abstract bra-ket-formulation when dealing with relativistic QM?

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user224659
user224659

Why is the concept of state kets not used in realtivistic quantum mechanics?

In Sakurais Quantum Mechanics the concept of a Hilbert Space underlying classical quantum wave mechanics (Schrödinger equation) is extensively developed.

But when dealing with the Dirac equation this concept is dropped and one only works in the position basis (wave mechanics). Why is it that we never use the abstract bra-ket-formulation when dealing with relativistic QM?