Advanced integration techniques

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SUMMARY

The discussion focuses on advanced integration techniques in quantum mechanics, particularly for calculating complex integrals involving symmetric and antisymmetric functions and Gaussian functions. Key techniques include integration by parts, especially for Gaussian functions multiplied by powers of x. The Gaussian integral, defined as \int^{\infty}_{-\infty} e^{-x^{2}} \, dx = \sqrt{\pi}, is highlighted as a fundamental result. For further reference, the "Handbook of Mathematical Functions" by Abramowitz and Stegun is recommended as a valuable resource.

PREREQUISITES
  • Understanding of quantum mechanics principles
  • Familiarity with integration techniques, specifically integration by parts
  • Knowledge of Gaussian functions and their properties
  • Access to the "Handbook of Mathematical Functions" by Abramowitz and Stegun
NEXT STEPS
  • Study the derivation of the Gaussian integral and its applications
  • Explore advanced integration techniques in quantum mechanics
  • Review examples of symmetric and antisymmetric functions in integrals
  • Learn how to apply integration by parts to complex functions
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Physicists, mathematicians, and students engaged in quantum mechanics or advanced calculus who seek to enhance their understanding of integration techniques and their applications in theoretical physics.

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Hello,
In quantum mechanics I often come across with some very complicated integrals which I need to calculate in an analytic methods (For ex. symmetric and antisymmetric functions , Gaussians ,etc.)
Do you know where I can find a summery of those techniques?
thanks
 
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Gaussian functions multiplied by powers of x are usually solved by integration by parts. Also, any self-respecting physicist knows that:

<br /> \int^{\infty}_{-\infty} e^{-x^{2}} \, dx = \sqrt{\pi}<br />

*This is as hard to derive as it appears. Even wikipedia has it at: http://en.wikipedia.org/wiki/Gaussian_integral

For more details, could you please provide some examples of said integrals?
 
Last edited:
Abramowitz, Stegun, Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables.
 

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