Probability of finding a particle in a region

In summary, the conversation discusses the calculation of the probability of finding a particle in a region using the mod square of the wave function. It is mentioned that the operator is provided but not the wave function, and the speaker is unsure of how to proceed. It is then revealed that an implicit wave function exists, satisfying ##\hat A \psi = 0##, and the question of whether ##\hat A## is Hermitian is raised. The questioner expresses confusion about this condition and its effect on the differential equation for ##\psi##.
  • #1
Saptarshi Sarkar
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13
Homework Statement
If the operator ##\hat A = i(\hat x^2 + 1)\frac d {dx} + i\hat x## is Hermitian, then calculate the probability of finding a particle (satisfying the condition ##\hat Aψ(x) =0##) in the region -1<x<1.
Relevant Equations
P = ##\int_{-1}^1 {|ψ|}^2 \, dx##
I know how to calculate the probability of finding the particle in a region by integrating the mod square of the wave function within that region. But in this question only the operator is provided but not the wave function. I am not sure how am I supposed to proceed with this problem.
 
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  • #2
An explicit wave function wasn't given, but one was implicitly provided. It's the one that satisfies ##\hat A \psi = 0##. But first you need to determine if ##\hat A## is Hermitian.
 
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  • #3
I must admit I'm struggling to make sense of that condition. ##\hat A## doesn't look Hermitian. And how would that affect the differential equation for ##\psi##?
 
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FAQ: Probability of finding a particle in a region

1. What is the probability of finding a particle in a specific region?

The probability of finding a particle in a specific region depends on the size of the region and the distribution of the particles within that region. It can be calculated using the formula P = N/N_total, where N is the number of particles in the region and N_total is the total number of particles in the system.

2. Can the probability of finding a particle in a region be greater than 1?

No, the probability of finding a particle in a region cannot be greater than 1. This is because a probability of 1 represents certainty, meaning that the particle is definitely in the region. Any probability greater than 1 would indicate that there are more particles in the region than in the entire system, which is not possible.

3. How does the size of the region affect the probability of finding a particle?

The larger the region, the higher the probability of finding a particle within that region. This is because a larger region means there is more space for particles to occupy, increasing the chances of a particle being present in that region.

4. Does the type of particle affect its probability of being found in a region?

Yes, the type of particle can affect its probability of being found in a region. This is because different types of particles have different properties and behaviors, which can influence their distribution within a given region.

5. How does the shape of the region affect the probability of finding a particle?

The shape of the region can affect the probability of finding a particle in that region. For example, a spherical region will have a higher probability of containing a particle at its center compared to a box-shaped region, as particles are more likely to be distributed evenly within a spherical volume.

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