What would the universe be like if it had four spatial dimensions instead of three? Experimentalists are starting to explore the physics of higher dimensions with the help of recently developed tricks ...

Researchers attempting to solve the problem of dark matter have proposed a particle that can travel to an unseen fifth dimension. The work is entirely hypothetical, as it attempts to explain a type of ...

In Einstein's famous theory of relativity the concepts of immutable space and time aren't just put aside, they're explicitly and emphatically rejected. Space and time are now woven into a coexisting ...

Here’s what you’ll learn when reading this story: When you drill down into the very fabric of reality—where elementary particles make up the matter that is you and me and everything around us in three ...

Complex connections Schematic of the 4D metamaterial (left), and photographs of its experimental realization in a circuit (right). (Courtesy: Wang et al.) Materials known as topological insulators ...

Physicists may have just cracked open a hidden side of the quantum world. For decades, every known particle was thought to ...

For nearly a century, every particle in the quantum world has fallen into one of two camps. Bosons, like photons, happily ...

A team of physicists has coaxed a single, photon-like particle into behaving as if it lives in 37 different quantum dimensions at the same time, and they can make it do the trick on demand. The result ...

We tend not to dwell on the fact that we exist in three dimensions. Forwards-back, left-right, up-down; these are the axes on which we navigate the world. When we try to imagine something else, it ...