# Questions tagged [wolfram-physics]

Questions relating to the Wolfram Physics project, and how to use Mathematica for it.

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### How to simplify the results of squared amplitude calculations in FeynCalc?

I want to calculate the squared amplitude of the Feynman diagram of double-pion photoproduction using FeynCalc package. Here is the code I created: ...
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### Plot of Density of States Using DiracDelta Function [duplicate]

I am trying to plot the density of states $$N(E)= \frac{1}{N}\Sigma_{k} (\delta{(E - \epsilon_{k}))}$$ where $\epsilon_{k} = -2t*[cos(k_x)+cos(k_y)]$ and $k$ goes from $-\pi$ to $\pi$. For this plot,...
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### Plotting equation of motion in mathematica [closed]

Suppose I have an equation of a moving body in Newtonian Mechanics e.g. $ax^2=(b/t^4)+(c/t^2)$ how can I plot a x-t graph in mathematica with a range for the constants a, b and c from 0 to 5 with ...
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### How to recreate these physics style graph plots?

The new graphs from this blog post look really nice in a dark background: How to recreate the largest graph from above? What I've tried Nothing yet... there is probably a link or notebook that has ...
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