Integrals of products of Hermite polynomials

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SUMMARY

The discussion focuses on calculating the inner product of two Hermite polynomials, specifically the integral of the form \(\int{ H_n(x) H_m(\alpha x) dx}\). Users are directed to utilize Wolfram Alpha for specific calculations, such as integrating HermiteH[3, x] and HermiteH[5, x/3]. It is noted that using the limits {x, -Infinity, +Infinity} in the integral may not yield convergence for certain cases, highlighting the complexity of the problem.

PREREQUISITES
  • Understanding of Hermite polynomials and their properties
  • Familiarity with integral calculus, particularly improper integrals
  • Knowledge of harmonic oscillator eigenstates in quantum mechanics
  • Experience with computational tools like Wolfram Alpha for symbolic integration
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  • Research the properties and applications of Hermite polynomials in quantum mechanics
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  • Explore advanced integration techniques for products of orthogonal polynomials
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Physicists, mathematicians, and students studying quantum mechanics or mathematical physics, particularly those working with Hermite polynomials and their applications in harmonic oscillators.

tommyli
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Hey people,

I need to calculate inner product of two Harmonic oscillator eigenstates with different mass. Does anybody know where I could find a formula for
[itex] \int{ H_n(x) H_m(\alpha x) dx}[/itex]

where [itex]H_n, H_m[/itex] are Hermite polynomials?
 
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Here, for example:
http://www.wolframalpha.com/input/?i=Integrate[HermiteH[3%2C+x]*HermiteH[5%2C+x%2F3]%2C+x]

(use {x,-Infinity,+Infinity} for the last argument to get a definite integral, although this does not actually converge for this example)
 

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