Can Choices Curve Spacetime?

Two teams are developing ways to detect quantum-gravitational effects in the lab.

FQXi

Topics: Quantum Gravity Quantum Mechanics Superposition

Quantum Mischief Rewrites the Laws of Cause and Effect

Spurred on by quantum experiments that scramble the ordering of causes and their effects, some physicists are figuring out how to abandon causality altogether.

Quanta Magazine

One of Quantum Physics’ Greatest Paradoxes May Have Lost Its Leading Explanation

Underground experiment undermines gravity as the cause of quantum collapse.

Science

Topics: Gravity Particles Quantum Mechanics Superposition

Quantum Darwinism, an Idea to Explain Objective Reality, Passes First Tests

Three experiments have vetted quantum Darwinism, a theory that explains how quantum possibilities can give rise to objective, classical reality.

Topics: Entanglement Quantum Mechanics Reality Superposition

The Unsolvable Problem

After a years-long intellectual journey, three mathematicians have discovered that a problem of central importance in physics is impossible to solve — and that means other big questions may be undecidable, too.

Scientific American

Topics: Quantum Mechanics Superposition

Why Is the Quantum So Mysterious?

Quantum mechanics is how the world works at deepest levels. But nobody has any idea why.

Closer To Truth

Topics: Entanglement Quantum Gravity Quantum Mechanics Relativity Superposition

Demon in the Details of Quantum Thermodynamics

Researchers find quantum ‘Maxwell’s Demon’ may give up information to extract work.

Washington University in St. Louis

Topics: Information Particles Quantum Mechanics Superposition

The Human Eye Could Help Test Quantum Mechanics

Experiments to confirm we can see single photons offer new ways to probe our understanding of quantum reality.

Quantum Physics May Be Even Spookier Than You Think

A new experiment hints at surprising hidden mechanics of quantum superpositions.

Causality in a Quantum World

The clever use of quantum superposition can create situations in which cause-and-effect relationships between events are not well-defined.

Physics Today

How Quantum Trickery Can Scramble Cause and Effect

Logic-defying experiments in quantum causality can twist the notion of time itself.

Nature

Topics: Entanglement Quantum Mechanics Superposition

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