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# quantum gravity

## Latest Articles

### New Calculations Show How to Escape Hawking’s Black Hole Paradox

Inside of a black hole, the two theoretical pillars of 20th-century physics appear to clash. Now a group of young physicists think they have resolved the conflict by appealing to the central pillar of the new century — the physics of quantum information.

### Does Nothingness Exist?

Even empty space bubbles with energy, according to quantum mechanics — and that fact affects almost every facet of physical reality. The theoretical physicist Isabel Garcia Garcia explains to Steven Strogatz why it’s so important in modern physics to understand what a true vacuum is.

### The Physicist Who’s Challenging the Quantum Orthodoxy

For decades, physicists have struggled to develop a quantum theory of gravity. But what if gravity — and space-time — are fundamentally classical?

### A New Map of the Universe, Painted With Cosmic Neutrinos

Physicists finally know where at least some of these high-energy particles come from, which helps make the neutrinos useful for exploring fundamental physics.

### In New Paradox, Black Holes Appear to Evade Heat Death

The puzzling behavior of black hole interiors has led researchers to propose a new physical law: the second law of quantum complexity.

### The Physicist Who Glues Together Universes

Renate Loll has helped pioneer a radically new approach to quantum gravity. She assumes that the fabric of space-time is a blend of all possible fabrics, and she has developed the computational tools needed to calculate the far-reaching implications of that assumption.

### Wormhole Experiment Called Into Question

Last fall, a team of physicists announced that they had teleported a qubit through a holographic wormhole in a quantum computer. Now another group suggests that’s not quite what happened.

### Black Holes Will Eventually Destroy All Quantum States, Researchers Argue

New calculations suggest that the event horizons around black holes will ‘decohere’ quantum possibilities — even those that are far away.

### How Our Reality May Be a Sum of All Possible Realities

Richard Feynman’s path integral is both a powerful prediction machine and a philosophy about how the world is. But physicists are still struggling to figure out how to use it, and what it means.