# Questions tagged [wavefunction]

A complex scalar field that describes a quantum mechanical system. The square of the modulus of the wave function gives the probability of the system to be found in a particular state. DO NOT USE THIS TAG for classical waves.

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### Do spin wavefunctions live on a Hilbert space?

This question comes to mind while reading the quote in different books which is "Hilbert space is infinite dimensional". While the electron spin is 2 Dimensional problem. Secondly, we ...
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### Parity of ground state of truncated harmonic oscillator [closed]

**Why soln for truncated oscillator exist only when wave function is zero at x=0 and the states must be odd only? How to calculate parity for ground state of truncated harmonic oscillator?** strong ...
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### Clarification on calculating probabilities for a particles location (basic)

Say that we have a wave function $$\Psi(x,t)=c_1\Psi_1(x,t)+c_2\Psi_2(x,t)$$ where the particle is confined to $[0,a]$, $\Psi_i$ corresponds to the normalised wave function for energy $E_i$, and $c_i$ ...
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### Bound States of a Particle in a Half-Infinite Potential Plus a Delta Function [closed]

I am having some conceptual problems regarding the bound states. I will try to address them using a simple problem. Consider a particle which is under the effect of a half-infinite potential plus a ...
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### Using separation of variables to solve Schrödinger equation for a free particle

I was reading Introduction to Quantum Mechanics by David Griffiths and I am in Chapter 2, page 45. I know that since the solutions from Schrödinger equation cannot be normalized for a free particle. ...
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### Can different electron orbitals within the same atom be entangled?

Could the electron in the outer shell orbital be entangled with an electron within the inner S orbit of the atom? If so, how would this affect the properties of such an atom, such as emission and ...
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### Can we find the functional for a quantum field in QFT

I've heard that QFT is really described by a functional which dictates the probability that a field will be in a certain configuration $\Phi[\phi]$. My question is, can we find an equation that will ...
6k views

### What happens when a laser beam is stuck between two mirrors and the distance in-between is decreased gradually? Heisenberg Uncertainty Principle

Assuming a laser beam going back and forth between two mirrors, what would happen if we keep bring the mirrors closer and closer to each other? Because after a certain width, we would be knowing both ...
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### Is there a time component for each probable state of the wave function?

In other words, when does time or a time direction come into play or does it in the equations? Is there time or time directions associated with each probable state of a quantum system or does time ...
48 views