Shrodinger Equation Help: Solving for Wavefunction and Energy in a 1D Box

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SUMMARY

The discussion centers on solving the Schrödinger equation for a particle confined in a one-dimensional box, specifically from -a/2 to a/2, with potential energy defined as v(x) = 0 within the box and infinite outside. The wavefunction inside the box is expressed as ψ(x) = A sin(cx) + B cos(cx), where c is determined by boundary conditions. The energy levels are expressed in terms of c, with the equation Hψ = Eψ guiding the solution process. Participants seek clarification on the determination of c and the conditions for constants A and B to ensure a valid wavefunction.

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  • Understanding of the Schrödinger equation and its applications in quantum mechanics.
  • Familiarity with boundary conditions in quantum systems.
  • Knowledge of wavefunctions and their mathematical representations.
  • Basic concepts of potential energy in quantum mechanics.
NEXT STEPS
  • Study the derivation of the Schrödinger equation for a particle in a box.
  • Learn about boundary conditions and their impact on wavefunctions.
  • Explore the concept of quantization of energy levels in quantum mechanics.
  • Investigate the use of Fourier series in solving wavefunction problems.
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Students in quantum mechanics, particularly those studying the Schrödinger equation, as well as educators and tutors assisting learners in understanding wavefunctions and energy quantization in confined systems.

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Homework Statement


A particle of mass m in confined in a 1 dimensional box with origin at the center. the box extends from -a/2 to a/2 the potential energy is v(x) = 0 where -a/2<x< a/2 and infinite when x > a/2.

I have to write the shrodinger equation for the outside and inside of the box, solve the equation for inside the box in the form of wavefunc = A sin (cx) + B cos (cx). Give a rule determining all possible values of C and for each possible c determined give the conditions the constants A and B must adhere to to make the wavefunction a satisfactory solution to the shrodinger EQ

and last but not least express the energy in terms of C.

Homework Equations



H psi = E psi
h bar (used down below) = h/2pi
edit: oh i also used L instead of a for a variable when talking about the length of the box

The Attempt at a Solution



S.E. for particle outside box

psi(x) = sqrt(2/L) sin (n pi x)/L

S.E. for particle inside box

(-h bar^2)/2m + d psi/dx^2 = i(h bar) d psi/dtsolution to S.E for particle inside a box

Psi (x,t) = Ae^(i2pi/lamda - omega t) ==== Ae^(ikx - iwt)

====
solution using Eulers' rules
Acos(kx - wt) + iAsin (kx-wt)are these answers right for above questions? or do the answers have to be more specific, i don't know I am new to all this.

ok when they ask to give a rule that determines all possible values of c what does that mean? this might seem dumb but I am not even sure what c is.i registered for this forum specifically because I am having a lot of trouble in biophysical chem class, if anyone wants to help me it would be great.
 
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ooh and i can post any work leading up to the answers in the answer section but I refrained because I'm pretty sure my notation is horrible.
 

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