Finding the ground state energy of a particle

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Discussion Overview

The discussion centers on calculating the ground state energy of a particle influenced by a specific potential, U(x) = g*lnx for x > 1 and U(x) = ∞ for x = 1. The scope includes theoretical considerations and potential methods for solving the problem without initially using the Schrödinger equation.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant inquires about calculating the ground state energy without using the Schrödinger equation, expressing confusion about how to start.
  • Another participant suggests that the Schrödinger equation should be used and questions what alternative approach the first participant has in mind.
  • The first participant acknowledges a possible misunderstanding, noting that the question was posed before learning the Schrödinger equation, which complicates their ability to solve it.
  • A later reply clarifies that the boundary condition for the problem is ψ(x=1) = 0.

Areas of Agreement / Disagreement

There is no consensus on whether the Schrödinger equation is necessary for solving the problem, as one participant insists on its use while another is unsure due to prior learning constraints.

Contextual Notes

The discussion reflects uncertainty regarding the appropriate method to apply given the participants' varying levels of familiarity with the Schrödinger equation and boundary conditions.

sandybeach
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For a particle with a force acting on it whose potential is given by U(x) = g*lnx for x>1 and U(x) = ∞ for x = 1, how do I calculate the ground state energy of the particle?

Supposedly, there is no need to use Schrödinger's equations for this question, which is why I have no idea how to start.

Thanks for any help.
 
Last edited:
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You should use the Schrödinger equation; which other ansatz do you have in mind?
 
Alright, it must be a mistake then. We were given this question before learning the Schrödinger equation so it was impossible.

Edit: would I just use boundary conditions to solve for E in the time independent Schrödinger equation?
 
The boundary condition is ψ(x=1) = 0
 

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