This question arose in me after watching https://youtu.be/mmtLgYVEuJs?t=394. The link has a time in it so it takes you to the part I am talking about in the video.
1 Answers
The simple answer is "no", though it's an interesting question and there is more to it than this simple answer would suggest.
Matter and antimatter are related by a charge parity transformation, often abbreviated to $CP$. The charge transformation changes the sign of the charge, and the parity transformation is reflection in a mirror. So to change an electron into a positron you need to both change the charge from $-e$ to $+e$ and also swap the parity.
In the video you link the presenter shows how in two dimensions the letter R can be flipped by lifting it up out of the two dimensions and rotating it:
This is indeed a parity transformation, so it does the $P$ part, and it would also work with a 3D object lifted into a fourth spatial dimension and rotated. However it wouldn't turn matter into antimatter because the process does not do the charge transformation.
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