This month, we chat about antimatter. A recent experiment probing antiprotonic helium (a helium atom where one of the electrons is replaced by an antiproton) found an unexpected result. Rather than spectral lines broadening as the temperature of the system was lowered, the spectral lines got sharper! Tune in to find out more... Featuring Masaki Hori (Max Planck Institute of Quantum Optics) and Federico Levi (Nature) Hosted by Ankita Anirban (Nature Reviews Physics) and Cristiano Matricardi (Nature communications) Ref: Sótér, A., Aghai-Khozani, H., Barna, D.&nbsp;et al.&nbsp;High-resolution laser resonances of antiprotonic helium in superfluid&nbsp;4He.&nbsp;Nature&nbsp;603,&nbsp;411–415 (2022). <a href="https://doi.org/10.1038/s41586-022-04440-7" rel="noopener noreferrer" target="_blank">https://doi.org/10.1038/s41586-022-04440-7</a>&nbsp;]<hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

Light-matter interactions

A podcast on physics and publishing, brought to you by editors from the Nature portfolio. We go behind the scenes and talk to the authors and editors of the most interesting physics papers published in the Nature journals. Hosted on Acast. See acast.com/privacy for more information.