> > PS- hate the article title, pure vague clickbait > I agree. From the article: > > Yet physicists have found nothing amiss, no conclusive sign that antimat

> > PS- hate the article title, pure vague clickbait > I agree. From the article: > > Yet physicists have found nothing amiss, no conclusive sign that antimatter particles — which are just the oppositely charged twins of familiar particles — obey different rules. > So no surprises. Also, the "near absolute zero" is true, but it's just to make the experiment easier, it's not important from the theoretical point of view. Anyway, it's an interesting experiment in spite of the press article title. I'm sorry but did you actually read the article? The first quote is from the very first paragraph talking about physicists in general. And the cooling to near absolute zero was not "just to make the experiment easier." And it definitely is important. The surprise, in case you haven't read the article, is that one expects spectral lines of atoms in an ultra dense fluid (i.e. supercooled helium) to be smudged due to the interactions with surrounding atoms. But, when performing laser spectroscopy on hybrid atoms (regular nucleus but with antiprotons taking the place of electrons) the spectral lines narrowed instead of widened. See, for example, this paragraph: > Where the spectral lines of most atoms would have gone completely haywire in the increasingly dense fluid, widening perhaps a million times, the Frankenstein atoms did the opposite. As the researchers lowered the helium bath to icier temperatures, the spectral smudge narrowed. And below about 2.2 kelvins, where helium becomes a frictionless “superfluid,” they saw a line nearly as sharp as the tightest they had seen in helium gas. Despite presumably taking a battering from the dense surroundings, the hybrid matter-antimatter atoms were acting in improbable unison. This was a big surprise. That's why the next two lines are: > Unsure what to make of the experiment, Sótér and Hori sat on the result while they mulled over what could have gone wrong. > “We continued to argue for many years,” Hori said. “It was not so easy for me to understand why this was the case.” So, no, the article title is not clickbait and, yes, this is "important from the theoretical point of view".