A team affiliated with IPhT (CEA/CNRS) in France and the Universitat Autonoma de Barcelona argues that, within a standard effective-field-theory setup, the existence of a massive spin-3/2 particle ...

For decades, physicists searched for a missing piece of nature's puzzle, an elusive particle believed to explain why matter ...

How many kinds of elementary particles should I say there are? In experiments at the Large Hadron Collider, physicists smash ...

It is well known that charges radiate when they undergo acceleration 1. This fact was a major motivation for the development of quantum mechanics when the structure of atoms required electrons to ...

A ring in space, at least on paper, can do something a black hole cannot. It can connect distant regions without forcing ...

Quantum field theory in gravitational contexts unites the principles of quantum mechanics with the dynamic geometry of spacetime. It addresses how quantised fields propagate in curved backgrounds and ...

The Higgs boson is the only fundamental particle known to be scalar, meaning it has no quantum spin. This fact answers questions about our universe, but it also raises new ones. When it was first ...

Gravity is part of our everyday life. Still, the gravitational force remains mysterious: to this day we do not understand whether its ultimate nature is geometrical, as Einstein envisaged, or governed ...

In the recent decade, progress in black hole (BH) physics has been driven by landmark experimental achievements — from the first observation of ...

Gravitons, the particle of quantum gravity, may be impossible to detect. To progress to the next level in understanding reality, we need to combine quantum mechanics and Einstein’s general relativity.

There’s a new generation of experiments that may unlock the gravity particle. Physicists have long believed that detecting the particle of gravity—the graviton—was fundamentally impossible, with the ...