Search FQXi


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.

John Merryman: "The problem is that we do experience reality as those discrete flashes of..." in The Quantum...

Thomas Ray: "(reposted in correct thread) Lorraine, Nah. That's nothing like my view...." in 2015 in Review: New...

Lorraine Ford: "Clearly “law-of-nature” relationships and associated numbers represent..." in Physics of the Observer -...

Lee Bloomquist: "Information Channel. An example from Jon Barwise. At the workshop..." in Physics of the Observer -...

Lee Bloomquist: "Please clarify. I just tried to put a simple model of an observer in the..." in Alternative Models of...

Lee Bloomquist: "Footnote...for the above post, the one with the equation existence =..." in Alternative Models of...

Thomas Ray: "In fact, symmetry is the most pervasive physical principle that exists. ..." in “Spookiness”...

Thomas Ray: "It's easy to get wound around the axle with black hole thermodynamics,..." in “Spookiness”...

click titles to read articles

Why Time Might Not Be an Illusion
Einstein’s relativity pushes physicists towards a picture of the universe as a block, in which the past, present, and future all exist on the same footing; but maybe that shift in thinking has gone too far.

The Complexity Conundrum
Resolving the black hole firewall paradox—by calculating what a real astronaut would compute at the black hole's edge.

Quantum Dream Time
Defining a ‘quantum clock’ and a 'quantum ruler' could help those attempting to unify physics—and solve the mystery of vanishing time.

Our Place in the Multiverse
Calculating the odds that intelligent observers arise in parallel universes—and working out what they might see.

Sounding the Drums to Listen for Gravity’s Effect on Quantum Phenomena
A bench-top experiment could test the notion that gravity breaks delicate quantum superpositions.

March 17, 2018

Complete Podcast
The FQXi January 25, 2013 Podcast features:
  • Is God a Good Theory?
  • Quantum Birds
  • The Cosmic Clock Ambiguity
INFO: MP3 file / 47 minutes / 44 MB
DOWNLOAD (right-click Windows, control-click Mac)
DISCUSS in the FQXi Community Forum
Bookmark and Share
Featured video in this podcast:
Individual Stories
Is God a Good Theory?
Cosmologist Sean Carroll assesses God as a scientific theory, discusses physicist Don Page's theological argument for the Everettian multiverse, and asserts his own belief that the underlying physics of everyday experience has been fully explained.
INFO: MP3 file / 17 minutes / 17 MB
DOWNLOAD (right-click Windows, control-click Mac)
Quantum Birds
How European robins may exploit quantum effects to sense the Earth's magnetic field. Reporter Carinne Piekema talks to Simon Benjamin and Erik Gauger.
INFO: MP3 file / 15 minutes / 14 MB
DOWNLOAD (right-click Windows, control-click Mac)
The Cosmic Clock Ambiguity
The way we choose to mark time in the early universe could profoundly change the fundamental laws of physics we measure. Physicist Andreas Albrecht discusses his research and whether it means we'll never find a unique theory of everything.
INFO: MP3 file / 14 minutes / 13 MB
DOWNLOAD (right-click Windows, control-click Mac)
Comment on this Podcast

Please read the important Introduction that governs your participation in this community. Inappropriate language will not be tolerated and posts containing such language will be deleted. Otherwise, this is a free speech Forum and all are welcome!
  • Please enter the text of your post, then click the "Submit New Post" button below. You may also optionally add file attachments below before submitting your edits.

  • HTML tags are not permitted in posts, and will automatically be stripped out. Links to other web sites are permitted. For instructions on how to add links, please read the link help page.

  • You may use superscript (10100) and subscript (A2) using [sup]...[/sup] and [sub]...[/sub] tags.

  • You may use bold (important) and italics (emphasize) using [b]...[/b] and [i]...[/i] tags.

  • You may also include LateX equations into your post.

Insert LaTeX Equation [hide]

LaTeX equations may be displayed in FQXi Forum posts by including them within [equation]...[/equation] tags. You may type your equation directly into your post, or use the LaTeX Equation Preview feature below to see how your equation will render (this is recommended).

For more help on LaTeX, please see the LaTeX Project Home Page.

LaTeX Equation Preview

preview equation
clear equation
insert equation into post at cursor

Your name: (optional)

Recent Comments

I too thoroughly enjoyed this short talk. Like Andreas Albrecht I have long been satisfied with Hugh Everett's many worlds hypothesis -- not at all a fantastic or preposterous notion -- and requiring fewer ad hoc assumptions than conventional interpretations of quantum theory.

Albrecht finds that clock ambiguity "deeply undermines" the "concreteness of physical laws." Perhaps -- however, when one discards a probabilistic wave function for continuous measurement functions, concreteness...

Hi Paul,

Thank you for your kind words! We hope you enjoy future editions too.

I think Andreas Albrecht would admit that even he didn't fully grok the implications of his work immediately! You can read more about it in this article by Bob Swarup: "The Accidental Universe." There you'll also find a discussion thread about his theory. Occasionally, our physicists dip into those threads and answer questioned posed to them there.

Really enjoyed this podcast. This was the first I have listened to of this series, and I plan to subscribe. I have to confess I didn't fully grok Anders Albrecht's idea about the choice of time in the early universe and the physical laws, but it is a fascinating idea. I think,

read all podcast comments

Please enter your e-mail address:
Note: Joining the FQXi mailing list does not give you a login account or constitute membership in the organization.