Finding Electron Probability: Wave Function x-Axis Analysis

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SUMMARY

The discussion focuses on calculating the probability of finding an electron in a specific region along the x-axis using the wave function \(\Psi(x,0)=Ae^{\frac{-x^2}{4 \sigma^2}}\). The probability density is derived from the wave function using the formula \(P(x) = \Psi^* \Psi\), which applies regardless of whether the wave function is complex. At \(x=0\), the probability density simplifies to \(P(0) = A^2\), confirming that the probability is determined solely by the amplitude \(A\) when evaluated at the origin.

PREREQUISITES
  • Understanding of quantum mechanics and wave functions
  • Familiarity with probability density functions
  • Knowledge of complex conjugates in mathematical expressions
  • Basic calculus for evaluating integrals and limits
NEXT STEPS
  • Study the implications of wave function normalization in quantum mechanics
  • Learn about the role of the constant \(A\) in wave functions and probability densities
  • Explore the concept of probability density in multi-dimensional quantum systems
  • Investigate the time evolution of wave functions in quantum mechanics
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Students and professionals in quantum mechanics, physicists analyzing electron behavior, and educators teaching wave function concepts in advanced physics courses.

UrbanXrisis
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the wave function descrbing a state of an electron confined to move along the xaxis is given at time zero by:

\Psi(x,0)=Ae^{\frac{-x^2}{4 \sigma^2}}

where sigma is a constant (i believe).

I am asked to find the probability of finding the electron in a degion dx centered at x=0.

I really don't know where to being since the wave function isn't in complex form so I can't multiply it by its complex conjugate. what should I do?
 
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UrbanXrisis said:
the wave function descrbing a state of an electron confined to move along the xaxis is given at time zero by:

\Psi(x,0)=Ae^{\frac{-x^2}{4 \sigma^2}}

where sigma is a constant (i believe).

I am asked to find the probability of finding the electron in a degion dx centered at x=0.

I really don't know where to being since the wave function isn't in complex form so I can't multiply it by its complex conjugate. what should I do?

P(x)= \Psi ^* \Psi whether the wavefunction is complex or not. So P(0) = A^2e^{\frac{-x^2}{2 \sigma^2}}|_{x=0} = A^2.

-Dan

PS In case this is the issue, if a is a real number a^* = a.
 
Last edited:
you mean P(0,0) right? cause it is with respect to time too, but time is always t=0 in this problem
 

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