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BREAKING NEWS



Firewalls in Sci Am and FQXi Podcast
Mar 17, 2015
Firewalls on the cover of April's Scientific American. Just in time for our coverage on the March edition of the FQXi Podcast.

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.

 

Featured Videos:

"Seeing Without Looking"

Dagomir Kaszlikowski

"One Physics To Rule Them All (This Is Physics, part 1)"

Marc Séguin

"Why Do I Study Physics?"

Xiangjun Shi




NEW IN BLOGS

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...

Detecting Dark Matter Using Space-Based Quantum...
By ZEEYA MERALI
I’m lucky enough to be attending a COST Action workshop on quantum foundations currently taking place in Erice, Italy, with lots of FQXi folk in attendance. (Thank you to the organisers, FQXi’s Angelo Bassi, Catalina Oana Curceanu and Detlef...

Collapsing Physics, Celebrating Ghirardi
By ZEEYA MERALI
Yesterday afternoon at the quantum foundations meeting in Erice (supported by COST) we celebrated the 80th birthday (somewhat in advance) of GianCarlo Ghirardi who famously worked on collapse models, in an attempt to deal with the quantum measurement...




NEW PODCAST EPISODES
Bohmian Rhapsody: Physicists Shelly Goldstein and Jean Bricmont discuss features of the deterministic alternative to standard quantum mechanics proposed by David Bohm. From the Quantum Foundations meeting in Erice, Italy, supported by COST.
Physicists Angelo Bassi and GianCarlo Ghirardi discuss collapse models. From the COST quantum foundations meeting in Erice, Italy.
A quantum reality check; observing black hole firewalls; & a quantum theory of network explains time's arrow.



FEATURED FQXi MEMBER VIDEOS

video How are Multiple Universes Generated?
- Anthony Aguirre
video Is Mathematics Invented or Discovered?
- Stephen Wolfram
video How Do You Make a Cosmos? (2 of 2)
- Alan Guth




FORUM UPDATES

High Energy Physics
Believe in Ghosts?
By ANTONY GARRETT LISI
Most of my research was motivated by an early frustration with what fermions are and where they come from, mathematically. A column of complex numbers, why? Ah, they're the irreducible spinor representation of the Lorentz group, or they're minimal...

High Energy Physics
γ parameter in Brans-Dicke-like...
By ZEEYA MERALI
This is a thread to discuss the new paper by Olivier Minazzoli, which has just been published in Phys. Rev. D.. The full paper is available here: http://arxiv.org/abs/1309.0091.

From the abstract: "The post-Newtonian parameter gamma...

Complexity
The Fermi Paradox
By WILLIAM OREM
I'd be interested in hearing any proposed solutions to the Fermi Paradox. My experience has been that this is one of the Foundational Questions on which everyone you meet at a party has a ready answer, but the paradox turns out to be surprisingly...

 
NEW ARTICLES


Is Gravity Time's Archer?
By KATE BECKER • Mar 24, 2015
A new model argues the forces between particles in the early universe loosed time's arrow, creating temporal order from chaos.
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Discuss this article in the FQXi Community Forum (7 posts)

Purifying Physics: The Quest to Explain Why the “Quantum” Exists
By ANIL ANANTHASWAMY • Feb 9, 2015
A new framework for the laws underlying reality could explain why nature obeys quantum rules, the origin of time’s arrow, and the power of quantum computing.
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Discuss this article in the FQXi Community Forum (17 posts)

Searching for the Impossible
By SOPHIE HEBDEN • Jan 16, 2015
A quest to discover which computational tasks can never be resolved.
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Discuss this article in the FQXi Community Forum (19 posts)

Six Degrees to the Emergence of Reality
By CARINNE PIEKEMA • Jan 1, 2015
Physicists are racing to complete a new model of "quantum complex networks" that tackles the physical nature of time and paradoxical features of emergence of classical reality from the quantum world
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Discuss this article in the FQXi Community Forum (35 posts)

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)

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?
Read article
Discuss this article in the FQXi Community Forum (152 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.
Read article
Discuss this article in the FQXi Community Forum (1066 posts)


 
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