# These guys do Dirac equation with FEM along t

**URL:** https://community.freefem.org/t/these-guys-do-dirac-equation-with-fem-along-t/2311
**Category:** General Discussion
**Created:** [March 5, 2023, 2:30am UTC](https://community.freefem.org/t/these-guys-do-dirac-equation-with-fem-along-t/2311 "2023-03-05T02:30:35Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![marchywka](https://avatars.discourse-cdn.com/v4/letter/m/ee59a6/32.png) [@marchywka](https://community.freefem.org/u/marchywka)
#### Post date: [March 5, 2023, 2:30am UTC](https://community.freefem.org/t/these-guys-do-dirac-equation-with-fem-along-t/2311/1 "2023-03-05T02:30:35Z")

</div>

Interesting simulation of Dirac equation [1] with FEM in all dimensions.

Any particular issues encountered using one of the FEM dimensions as time?  
I’m not going to try a 3+1 D mesh generation but may try 2+1 🙂  
Thanks.

```auto
[1]A Spacetime Finite Elements Method to Solve the Dirac Equation, {Sundermann}, Rylee [...] {Kimn}, Jung-Han; arXiv e-prints. 2021 
https://arxiv.org/pdf/2103.14588.pdf

```