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From time crystals to wormholes: When is a quantum simulation real?

Physics

From time crystals to wormholes: When is a quantum simulation real?

Physicists are using quantum computers to conjure various exotic phenomena and are claiming that their creations are truly real. The work is forcing us to ask challenging questions about the nature of quantum reality

Features

Does space-time remember? The search for gravitational memory

Space

Does space-time remember? The search for gravitational memory

Features

We must address a key obstacle to our new age of space exploration

Space

We must address a key obstacle to our new age of space exploration

Comment

A simulation of gravity showing curved space-time. The ball represents the sun and is resting on a sheet of plastic that stretches under its weight. The curved sheet of plastic demonstrates the way a gravity curves space.

Physics

The massive problem of trying to fully explain what mass actually is

Comment

A distant supernova defies our understanding of the cosmos’s expansion

Space

A distant supernova defies our understanding of the cosmos’s expansion

News

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Physics

How we could discover quantum gravity without rebuilding space-time

Features

Physics

Exotic cosmic objects in string theory may look like leaky black holes

News

A gravitational-lensed image of a galaxy

Space

Weird dark matter waves seem to warp the light from distant galaxies

News

Space

We may finally know how Hawking's black hole paradox could be solved

News

Google's Sycamore quantum processor

Physics

Google’s quantum computer simulation of a wormhole may not have worked

The first simulation of a wormhole on a quantum computer made headlines, but a new study brings into question whether it was an accurate representation

News

Space

Wormholes could magnify light by a factor of 100,000

News

Physics

A quantum computer has simulated a wormhole for the first time

News

Space

Crooked star clusters may be a sign that Einstein’s gravity is wrong

News

Space

Did magnetism shape the universe? An epic experiment suggests it did

Features