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The FQXi podcast brings you the latest ideas in foundational physics and cosmology—and includes interviews with our members and other leading scientists. It's hosted by Zeeya Merali and Brendan Foster. You can contact us at, and follow us on twitter: @FQXi. The podcast is produced by Zeeya, and music is provided by Baltimore-based Diefenbaker.

Marcel-Marie LeBel: "Georgina, There is no instantaneity along the rod or within the coffee. It..." in The Nature of Time

Stefan Weckbach: "Hi Lorraine, thanks for your explanations. I think I now better..." in The Present State of...

Georgina Woodward: "Consider ice cream in hot coffee. They stay together, 'in time', as..." in The Nature of Time

Mykel Waggoner: "This is a link to a paper I wrote, as it explains how Quantum Entanglement..." in Alternative Models of...

Lorraine Ford: "Hi Stefan, Replying to your last couple of posts, this is the way I would..." in The Present State of...

Robert McEachern: ""There are more things in heaven and earth, Horatio, than are dreamt of in..." in Undecidability,...

Georgina Woodward: "Max? Why?" in Anatomy of spacetime and...

Steve Agnew: "Mueller opens his essay with... "As the argument goes, there are truths..." in Undecidability,...

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The Quantum Clock-Maker Investigating COVID-19, Causality, and the Trouble with AI
Sally Shrapnel, a quantum physicist and medical practitioner, on her experiments into cause-and-effect that could help us understand time’s arrow—and build better healthcare algorithms.

Connect the Quantum Dots for a New Kind of Fuel
'Artificial atoms' allow physicists to manipulate individual electrons—and could help to reduce energy wastage in electronic devices.

Can Choices Curve Spacetime?
Two teams are developing ways to detect quantum-gravitational effects in the lab.

The Quantum Engine That Simultaneously Heats and Cools
Tiny device could help boost quantum electronics.

The Quantum Refrigerator
A tiny cooling device could help rewrite the thermodynamic rule book for quantum machines.

September 21, 2021

Complete Podcast
The FQXi March 15, 2015 Podcast features:
  • Quantum Reality Check
  • Detecting Black Hole Firewalls
  • Quantum Networks
INFO: MP3 file / 50 minutes / 49 MB
DOWNLOAD (right-click Windows, control-click Mac)
DISCUSS in the FQXi Community Forum
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Featured video in this podcast:
Individual Stories
Quantum Reality Check
Photon experiments suggest the wavefunction is real -- and quantum cats truly are dead and alive at the same time -- as physicists Alessandro Fedrizzi and Martin Ringbauer explain. Plus, FQXi releases its first two books.
INFO: MP3 file / 19 minutes / 18 MB
DOWNLOAD (right-click Windows, control-click Mac)
Detecting Black Hole Firewalls
If you fell into a black hole would you be stretched into spaghetti or would you catch fire? Cosmologist Niayesh Afshordi discusses the possibility that neutrinos detected on Earth hold the answer. They may have been created by a ring of fire surrounding back holes.
INFO: MP3 file / 17 minutes / 16 MB
DOWNLOAD (right-click Windows, control-click Mac)
Quantum Networks
How complex network theory could explain the emergence of the classical world from the fuzzy quantum realm and the arrow of time. Physicist Jacob Biamonte talks to reporter Carinne Piekema.
INFO: MP3 file / 13 minutes / 13 MB
DOWNLOAD (right-click Windows, control-click Mac)
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Recent Comments

Also, if you want to read more background on Firewalls, check out this month's Scientific American, which has a cover feature on the topic by FQXi's Joe Polchinski (subscription required).

You can also submit questions for Joe here.

Our latest podcast has been posted and we’re catching up with a couple of old friends of FQXi to talk about their recent work, and making a couple of new ones.

First up we have quantum physicist Martin Ringbauer, of the University of Queensland, discussing tests investigating whether the quantum wavefunction is real. You may remember that Martin took part in one of our most popular podcast pieces last year, when he chatted to us about simulating time travel in the lab with photons. Now,...

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