TDSWE: Deriving Time Dependent Solutions from TISWE

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SUMMARY

The discussion focuses on the relationship between the Time Dependent Schrödinger Equation (TDSE) and the Time Independent Schrödinger Equation (TISE). It confirms that the primary utility of the TDSE is to derive the TISE, specifically by applying the factor e^{\frac{-iE_nt}{\hbar}} to obtain time dependence. However, this method is only applicable when dealing with time-independent potentials, as the separation of variables technique cannot be utilized if the potential energy function varies with time.

PREREQUISITES
  • Understanding of the Time Dependent Schrödinger Equation (TDSE)
  • Familiarity with the Time Independent Schrödinger Equation (TISE)
  • Knowledge of quantum mechanics principles, particularly wave functions
  • Basic grasp of potential energy functions in quantum systems
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  • Study the derivation of the Time Independent Schrödinger Equation (TISE) from the Time Dependent Schrödinger Equation (TDSE)
  • Explore the implications of time-dependent versus time-independent potentials in quantum mechanics
  • Learn about the method of separation of variables in solving differential equations
  • Investigate the role of wave functions and their time evolution in quantum systems
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Students and professionals in quantum mechanics, physicists focusing on wave functions, and anyone interested in the mathematical foundations of quantum theory.

jaydnul
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Maybe I'm missing something in my book, but it seems to me that the only importance of the time dependent SWE was to derive the time independent SWE. Is it true that in all cases you just need to solve the TISWE and then to find the time dependence, you tack on the [itex]e^{\frac{-iE_nt}{hbar}}[/itex] and sum all the linear combinations for the general solution?

Or can this method only be done for a time independent potential?
 
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Jd0g33 said:
Or can this method only be done for a time independent potential?

That is correct. You generally cannot use the "separation of variables" method on the time-dependent SE if the potential energy function depends on time.
 

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