Real and numerical experiments with antihydrogen
The past year the ALPHA collaboration at CERN has measured both the hyperfine spectrum and the first 1s-2s line shape of antihydrogen, allowing for the first precision tests of the CPT symmetry using antiatoms. A key factor behind this progress is a great improvement in the number of trapped antihydrogen atoms. I will first briefly review the recent experimental results from ALPHA. I will then go into more detail about formation and trapping of antihydrogen, and how our understanding of these processes are informed by simulations.