Calculating Integrals with Hermite Polynomials

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SUMMARY

The forum discussion focuses on calculating the integral of the form \(\int_{-\infty}^{\infty} x^4 H_n(x)^2 e^{-x^2} dx\), where \(H_n\) represents Hermite polynomials indexed by \(n\). Users discussed the challenges of applying recurrence relations to derive the solution. The integral is crucial in quantum mechanics and probability theory, particularly in contexts involving Gaussian functions and orthogonal polynomials.

PREREQUISITES
  • Understanding of Hermite polynomials, specifically \(H_n\) notation.
  • Familiarity with integral calculus, particularly improper integrals.
  • Knowledge of recurrence relations in polynomial sequences.
  • Basic concepts of Gaussian functions and their properties.
NEXT STEPS
  • Study the properties and applications of Hermite polynomials in detail.
  • Learn techniques for evaluating improper integrals involving exponential functions.
  • Explore recurrence relations specific to orthogonal polynomials.
  • Investigate the role of Hermite polynomials in quantum mechanics and statistical mechanics.
USEFUL FOR

Mathematicians, physicists, and students studying advanced calculus or quantum mechanics who need to understand the application of Hermite polynomials in integral calculations.

alejandrito29
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Hello , i need to calculate the following integral

[tex]\int_{-\infty}^{\infty} x^4 H(x)^2 e^{-x^2} dx[/tex]

i tried using the recurrence relation, but i don't go the answer
 
Physics news on Phys.org
What's [itex]H[/itex]? The Hermite polynomials have an index, i.e., [itex]H_n[/itex] with [itex]n \in \mathbb{N}_0[/itex].
 

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