# Questions tagged [dirac-delta-distributions]

Distributions are generalized functions, such as, e.g., the Dirac delta function. DO NOT USE THIS TAG for statistical probability distributions, profiles, graphs, plots, etc.

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### How do I calculate the inverse Fourier transform of the delta function? [migrated]

In the context of single-pixel imaging, the following statement is given: "A Fourier basis pattern $P_F (x,y)$ can be obtained by applying an inverse Fourier transform $\delta_F (u, v, \phi)$to ...
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### How can you approximate number of bound states in a harmonic oscillator potential $V$ and also for a Dirac delta function using uncertainty principle?

How can you approximate the number of bound states in a harmonic oscillator potential $V$ and also for a Dirac delta function using the uncertainty principle?
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### Local density of a deformed lattice to lowest order in displacement

I am trying to understand the derivation from appendix A in the paper https://arxiv.org/abs/cond-mat/9501087. The idea is to calculate the local density of a deformed lattice of a particle as a ...
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### Is there a way to see linear and surface charge density as a “special case” of volume charge density?

When deriving Gauss’s law in differential form (GLDF), $$\nabla \cdot \mathbf E = \frac{\rho}{\epsilon_0},$$ from Gauss’s law in integral form (GLIF) we get a tidier formula, which is however less ...
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### How to solve double delta potential bound states by “brute force”

I just solved a problem in Griffiths' Intro to QM, where one had to find the bound states given the potential: $$V(x)=-\alpha [\delta (x-a)+\delta(x+a)]$$ In order to solve it, one had to exploit the ...