What Does it Mean for a State to be Populated?

  • Thread starter Thread starter carllacan
  • Start date Start date
  • Tags Tags
    State
carllacan
Messages
272
Reaction score
3
Hi.

I was reading time-dependent perturbation on Sakurai and it mentioned that a certain state was "populated". What does that mean? I don't think it mentions it in any previous chapter.

Thank you for your time.
 
Physics news on Phys.org
There is a particle in the state.
 

Thread 'Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
View full post »

Thread 'Quantum behaviour of an electron around a positively charged sphere'

If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
View full post »

Similar threads

A Wigner Weisskopf method for time varying Perturbation
Replies
3
Views
1K
B What does it mean for a glass bead to be in a quantum state?
Replies
17
Views
2K
I Far off resonant Rabi oscillations in a 2 level system
Replies
0
Views
945
I Fermi's golden rule: why delta function instead of density states?
Replies
5
Views
2K
I Quantum mechanics stationary state
Replies
2
Views
3K
I On a constructive method of quantum state preparation (Ballentine)
Replies
2
Views
1K
A What Does Constant Fidelity in Quantum States Imply?
Replies
1
Views
1K
I Degenerated perturbation theory
Replies
3
Views
1K
A Ballentine on the "multicomponent state function"
Replies
1
Views
1K
I About nature of superposition of states
3
Replies
124
Views
8K

Hot Threads

Recent Insights

Back
Top