LIGO Didn’t Prove Quantum Gravity (At Least Not Yet)

LIGO Didn’t Prove Quantum Gravity (At Least Not Yet)

The Laser Interferometer Gravitational-Wave Observatory, or LIGO, has detected the ripple effect caused by gravitational waves in space for the very first time. This finding is important because it suggests that one of the most widespread interpretations of Albert Einstein’s century-old theory about relativity could be correct.

However, Forbes contributor Sabine Hossenfelder doesn’t think LIGO’s successful test proves the existence of quantum gravity or that the coalition will ever be able to do it.

LIGO to continue testing

One successful observation of gravitational waves in space doesn’t prove the quantum gravity theory, although most scientists think it’s a step in the right direction. Currently, there’s a missing link between Einstein’s General Theory of Relativity and quantum mechanics, which is where the quest for a theory of quantum gravity comes from. Physicists have been avidly searching for that link, which is where the idea of quantum gravity comes from.

Seth Klarman’s 2021 Letter: Baupost’s “Never-Ending” Hunt For Information

Baupost's investment process involves "never-ending" gleaning of facts to help support investment ideas Seth Klarman writes in his end-of-year letter to investors. In the letter, a copy of which ValueWalk has been able to review, the value investor describes the Baupost Group's process to identify ideas and answer the most critical questions about its potential Read More

Einstein’s Theory of Relativity states that gravitational waves, which are produced by objects that are accelerating, send ripples through space-time, and LIGO plans to test what it observed many more times. Basically what it boils down to is that the U.S.-led group directly detected these gravitational waves through time and space for the very first time.

Quantum gravity not needed to explain gravitational waves

Hossenfelder said in her post on Forbes that quantum gravity isn’t needed to explain gravitational waves although physicists widely believe that quantum gravity causes gravitons, or “quantized gravitational waves,” as she calls them. She also describes gravitons as “a tiny chunk of the wave with an energy proportional to the wave’s frequency.” Further, she said each gravitational wave is made up of “a huge number” of them, although currently scientists can’t measure them.

Because of how many gravitons are believes to make up a gravitational wave, she said detectors can’t pick up individual particles because there are so many of them. They’re also not “sensitive to the tiny, discrete steps in energy,” she explained. In other words, LIGO hasn’t proven that gravitons exist, and if they do exist, then the group can observe them in the form of a gravitational wave without being able to detect gravitons.

“As to whether it can tell us something about quantum gravity, I can’t tell you with certainty, because we don’t have a theory of quantum gravity,” she wrote. “So the answer to this question depends on what you believe we know about quantum gravity.”

Updated on

Michelle Jones is editor-in-chief for and has been with the site since 2012. Previously, she was a television news producer for eight years. She produced the morning news programs for the NBC affiliates in Evansville, Indiana and Huntsville, Alabama and spent a short time at the CBS affiliate in Huntsville. She has experience as a writer and public relations expert for a wide variety of businesses. Email her at [email protected]
Previous article Negative PC Data Points May Lower Intel Corporation Estimates
Next article John Paulson Hates Money

No posts to display