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BREAKING NEWS



Trick or Truth? 2015 Essay Contest
Dec 16, 2014
FQXi launches the next Essay Contest, on the mysterious link between physics and math. Enter by March 4. Good luck and writing!

"Show Me the Physics!" Video Contest Winners
Dec 4, 2014
FQXi announces winners to "Show Me the Physics" Video Contest. Watch the announcement and Q&A with top winners here.

Steer the Future Essay Contest Results!
Aug 21, 2014
Watch Q&A with the winners and FQXi. Read the full list of winners here.

 



NEW IN BLOGS

Call for Research Proposals: The Physics of What...
By ZEEYA MERALI
It's good to take a philosophical attitude to life. Let's say you apply for an FQXi large grant. Maybe you get it, maybe you don't. Whatever happens, happens.

But what does *happen* from the point of view of physics? What constitutes an...

Trick or Truth? — Essay Contest 2015
By BRENDAN FOSTER
Physics and mathematics -- It seems impossible to imagine the history of either one without the other. For gravity theory alone, we see so many examples of this -- from Newton creating calculus, to Einstein mining differential geometry.

But...

Janus Universes and a Gravitational Arrow of Time
By ZEEYA MERALI
We can always count on FQXi member Julian Barbour to raise the tone of the conversation, this time by referencing the Roman two-faced god Janus with his new theory that explains the origin of time's arrow, using gravity (Phys. Rev. Letts, 113,...




NEW PODCAST EPISODES
2014 in review: Ian Durham picks his top 5 physics stories of the year; & we congratulate the winners of the first FQXi video contest.
How parallel worlds interact with ours; redefining "life" in terms of predicting the future; questioning the founding assumptions of quantum theory; & the Philae lander sends back songs from a comet.
Primordial gravitational waves turn to dust and why this is good news for inflation theory; Julian Barbour's model in which the big bang created twin mirror universes, solves the arrow of time problem; & Paul Davies on his physics-based evolutionary-model of cancer, which recommends oxygen treatment and immunotherapy.



FEATURED FQXi MEMBER VIDEOS

video How Big Can the Cosmos Get?
- George F. R. Ellis
video What is a Theory of Everything?
- Wojciech H. Zurek
video What is the Doomsday Argument?
- Martin Rees




FORUM UPDATES

Ultimate Reality
Alternative Models of Reality
By ZEEYA MERALI
If you have an unconventional, alternative model of reality, then this is the place to discuss it. (This is for contributors who have preliminary ideas and would like feedback, but do not have an academic paper or arXiv preprint and have not given a...

Cosmic Origins
Is the Past Infinite?
By WILLIAM OREM
I interviewed some non-mainstream cosmologists last year for an article, such as those at the Alternative Cosmology Group who hosted the Crisis in Cosmology conference in Portugal in 2005. These are credible folks who think the Standard Model (the...

Cosmology
Alternative Models of Cosmology
By ANONYMOUS
In cosmology, it is believed that regions of space on `opposite' sides of the universe are too far apart to have ever been causally connected. That is, they are outside each other's `particle horizon'. Consequently, it is difficult to explain the...

 
NEW ARTICLES


Quantum in Context
By NICOLA JONES • Dec 13, 2014
An untapped resource could provide the magic needed for quantum computation—and perhaps even open the door to time travel.
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Discuss this article in the FQXi Community Forum (3 posts)

Spot the Difference to Reveal Exotic Particles
By COLIN STUART • Oct 30, 2014
Questioning the symmetrization postulate of quantum mechanics and the notion that electrons are indistinguishable could reveal whether hypothetical new particles exist.
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Discuss this article in the FQXi Community Forum (6 posts)

Life's Quantum Crystal Ball
By CARINNE PIEKEMA • Oct 9, 2014
Does the ability to predict the future—perhaps with quantum help—define the fundamental difference between living and inanimate matter?
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Discuss this article in the FQXi Community Forum (15 posts)

The Quantum Truth Seeker
By NICOLA JONES • Sep 19, 2014
Watching particles fly through an interferometer might help to unveil higher-order weirdness behind quantum theory.
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Discuss this article in the FQXi Community Forum (11 posts)

Quantifying Occam
By SOPHIE HEBDEN • Aug 17, 2014
Is the simplest answer always the best? Connecting Medieval monks to computational complexity, using the branch of mathematics known as category theory.
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Discuss this article in the FQXi Community Forum (4 posts)

Heart of Darkness
By ANIL ANANTHASWAMY • Jul 23, 2014
An intrepid physicist attempts to climb into the core of black hole.
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Discuss this article in the FQXi Community Forum (3 posts)

Why Quantum?
By COLIN STUART • Jun 17, 2014
Entropy could explain why nature chose to play by quantum rules.
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Discuss this article in the FQXi Community Forum (1116 posts)

Reality's NeverEnding Story
By KATE BECKER • Apr 17, 2014
A quantum version of Darwinian natural selection could enable the universe to write itself into being.
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Discuss this article in the FQXi Community Forum (20 posts)

The Quantum Dictionary
By NICOLA JONES • Mar 10, 2014
Mark Van Raamsdonk is re-writing how we define the shape of our universe. Can such translations help to unite quantum theory and gravity?
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Discuss this article in the FQXi Community Forum (13 posts)

Q&A with Paul Davies: What is Time?
By JOHN STEELE • Feb 16, 2014
Where does time come from? Why does it seem to flow?
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Discuss this article in the FQXi Community Forum (150 posts)

Q&A with David Rideout: Testing Reality in Space
By COLIN STUART • Sep 19, 2013
Satellite experiments could soon investigate the boundaries of quantum physics and relativity.
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Discuss this article in the FQXi Community Forum (121 posts)

Readers' Choice: Cheating the Causal Game
By SOPHIE HEBDEN • Jun 24, 2013
A new quantum framework that blurs cause-and-effect at a fundamental level could improve information processing and lead to a theory of quantum gravity.
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Discuss this article in the FQXi Community Forum (191 posts)

The Accidental Universe
By BOB SWARUP • Jan 8, 2013
Have we been fooled into seeing one form of reality, with particular fundamental forces and laws, based on the peculiar way that we have chosen to measure time?
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Discuss this article in the FQXi Community Forum (657 posts)

Faster Than Light
By SOPHIE HEBDEN • May 22, 2012
A controversial theory in which light broke its own speed limit in the early universe joins forces with string theory and loop quantum gravity to solve cosmic mysteries.
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Discuss this article in the FQXi Community Forum (1044 posts)


 
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