Editor's note: The European Nuclear Research Center ALPHA project team said in a new research report that after successfully "grabbing" anti-hydrogen atoms for a long time, they are currently trying to directly analyze the interaction between antimatter and gravity. Unlike well-known substances, antimatter atoms are composed of negatively charged protons and positively charged electrons. According to current theory, hydrogen atoms and antihydrogen atoms have the same mass, so their interaction with gravity should also be The same: no matter whether it is a hydrogen atom or an anti-hydrogen atom, it will be subject to downward force once released. But this theory has yet to be empirically tested.
The European Nuclear Research Center ALPHA project team said in a new research report that after successfully "grabbing" antihydrogen atoms for a long time, they are currently trying to directly analyze the interaction of antimatter and gravity to determine whether the antimatter is falling. Still "falling up."
Unlike the well-known matter, antimatter atoms consist of negatively charged protons and positively charged electrons. According to current theory, hydrogen atoms and anti-hydrogen atoms have the same mass, so their interaction with gravitation should also be the same: whether it is a hydrogen atom or an anti-hydrogen atom, it will be subject to downward forces once released. But this theory has yet to be empirically tested.
The ALPHA project team used a special magnetic field to "grab" anti-hydrogen atoms for 1,000 seconds. The anti-hydrogen atoms were then released. The researchers used a position-sensitive annihilation detector to observe its trajectory, trying to analyze the effect of gravity on the released anti-hydrogen atoms.
The ALPHA project team reported on April 30 in the British journal Nature Communications that this is the first time that researchers can directly analyze the interaction between antimatter and gravity. However, they have only taken the first step of directly observing and analyzing how gravity affects antimatter, because according to the data at this stage, it is still impossible to confirm whether the antimatter is falling or "falling down" under the action of gravity.
According to reports, after the upgrade of ALPHA experimental equipment, it will restart next year. At that time, with the support of more data, it is expected to better observe directly how antimatter is affected by gravity.
Project researcher Joel Fayence said: "If antimatter really" falls up "-this is unlikely to happen, then we have to change our view of how the universe works."
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