[W110] Daniel Carney: Testing quantum gravity in the lab

31 March 2021 – 15:00 UTC


Daniel Carney
Lawrence Berkeley National Lab


Walter Tangarife
Loyola University Chicago


After a century of intense theoretical work, a variety of possibilities have surfaced for candidate models of quantum gravity, for example string theory. All of these models rest on a simple principle: that the gravitational field itself is a quantum degree of freedom, just like the electromagnetic field. But why should this be the case? Recently, a number of groups have proposed experiments probing this question. In this talk, I’ll give an overview of the basic ideas of these tests and their relation to questions about, for example, the graviton. In particular, I’ll explain a recent experimental proposal using atom interferometers by myself, Muller, and Taylor. This experiment can be used to positively verify that the gravitational field is capable of generating quantum entanglement between a pair of massive objects.


  1. https://arxiv.org/abs/1807.11494
  2. https://arxiv.org/abs/2101.11629

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.