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If you are aware of an interesting new academic paper (that has been published in a peer-reviewed journal or has appeared on the arXiv), a conference talk (at an official professional scientific meeting), an external blog post (by a professional scientist) or a news item (in the mainstream news media), which you think might make an interesting topic for an FQXi blog post, then please contact us at forums@fqxi.org with a link to the original source and a sentence about why you think that the work is worthy of discussion. Please note that we receive many such suggestions and while we endeavour to respond to them, we may not be able to reply to all suggestions.

Please also note that we do not accept unsolicited posts and we cannot review, or open new threads for, unsolicited articles or papers. Requests to review or post such materials will not be answered. If you have your own novel physics theory or model, which you would like to post for further discussion among then FQXi community, then please add them directly to the "Alternative Models of Reality" thread, or to the "Alternative Models of Cosmology" thread. Thank you.

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FQXi FORUM: Ultimate Reality
October 16, 2017

The Multiverse - Part 2 Documentary
12 posts  •  created by Farzad Nekoogar   •  May. 28, 2017 @ 20:15 GMT
"Part 2 of the Multiverse documentary is now released on the https://www.youtube.com/watch?v=xj6tUW-zNQg The following topics/questions are covered: 1. Does string theory predict the Multiverse..."

Quickfire Quantum Qs
28 posts  •  created by Zeeya Merali   •  Apr. 7, 2017 @ 12:53 GMT
"This is a place to post quick queries about quantum-related issues."

Multiversal Journeys: The Multiverse – Introduction and Misconceptions
3 posts  •  created by Brendan Foster   •  Feb. 3, 2017 @ 21:58 GMT
"Multiversal Journeys is a physics education organization run by FQXi Member Farzad Nekoogar. MVJS recently produced a lesson on the multiverse (supported by an FQXi mini-grant). Please have a look..."

The Race to Replace the Kilogram
87 posts  •  created by Zeeya Merali   •  Jan. 25, 2017 @ 12:29 GMT
"Thanks to Steve Agnew for suggesting that we open a thread based on a new [i]Scientific American[/i] article about the "long-running effort to ditch the decaying, 19th-century artifact that defines..."

Weinberg: Why quantum mechanics might need an overhaul
18 posts  •  created by Zeeya Merali   •  Nov. 6, 2016 @ 18:22 GMT
"Thanks to Steve Agnew for suggesting that we open a forum topic based on a recent interview with Nobel Laureate physicist Steven Weinberg, by Tom Siegfried in [i]Science From the article: [i..."

80 Years of EPR — Ontology and Foundations of Quantum Mechanics
9 posts  •  created by Brendan Foster   •  Jan. 29, 2016 @ 17:22 GMT
"FQXi Member and Philosopher Olimpia Lombardi recently hosted a meeting on Foundations of Quantum Mechanics — Ontological Problems After 80 Years of The website is in Spanish, but even if you don..."

Quantum Coherence = Entanglement
46 posts  •  created by Zeeya Merali   •  Jul. 23, 2015 @ 16:38 GMT
"I'm opening this thread shamefully late, based on recent FQXi funded research by Gerardo Adesso and colleagues, whose work was covered in Phys.Org -- as spotted at the time, by John We will, ..."

Pilot Wave Hydrodynamics
71 posts  •  created by Zeeya Merali   •  Sep. 15, 2014 @ 19:38 GMT
"In a new article for the Annual Review of Fluid Mechanics, John Bush of MIT reviews experimental evidence showing fluid droplets exhibiting quantum-esque features. In particular, walking droplets are..."

Alternative Models of Reality
2067 posts  •  created by Zeeya Merali   •  Aug. 30, 2013 @ 15:28 GMT
"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..."

Quantum Thermodynamics
8 posts  •  created by Zeeya Merali   •  Jul. 8, 2013 @ 21:24 GMT
"A new paper by FQXi member Vlatko Vedral and colleagues on the thermodynamics of quantum systems has been highlighted in a news story on phys.org. Thanks to John Merryman for alerting us to The art..."

Quantum Mechanics without time and the measurement problem
8 posts  •  created by Brendan Foster   •  Jun. 12, 2012 @ 19:13 GMT
"FQXi Member T. P. Singh of the Tata Institute in Mumbai, India, kindly provided us with slides from a talk he delivered last summer in Trieste, Italy. The topic was his team's research into Quantum..."

Uncertainty Relations - Fundamental or No?
35 posts  •  created by Brendan Foster   •  Feb. 7, 2011 @ 15:07 GMT
"Will the Uncertainty Relations Survive as Fundamental Pieces in the Future of Physics? by Spiridon DUMITRU In this short text (by direct references to two my recent paper [1, 2] ) we try to ev..."

Classical Spheres, Division Algebras, and the Illusion of Quantum Non-locality:
3068 posts  •  created by Joy Christian   •  Jan. 13, 2011 @ 22:26 GMT
"I wish to mention a recent preprint of mine---this one---which is about the prevalent (but false) belief in “quantum non-locality.” I am, in fact, required to post this link here, because this..."

Limits of mathematics in cosmology
193 posts  •  created by Brendan Foster   •  Jul. 26, 2010 @ 14:33 GMT
"By special request, this forum is opened and dedicated to discussion of the limits or not of mathematics when applied to cosmology."

Understanding, artificial intelligence, and so forth
32 posts  •  created by Ian Durham   •  Mar. 7, 2010 @ 01:56 GMT
"In the discussion over the nature of mathematics, one interesting side-argument that recently started was over the idea of "understanding." What does it take to really understand something? The..."

The limits of mathematics
252 posts  •  created by Ian Durham   •  Feb. 13, 2010 @ 19:43 GMT
"I realize this forum hasn't gotten much action lately, but I'm hoping enough people pop on here that I get some feedback on this (particularly some of the membership who may have worked on or thought..."

Does Math Evolve?
24 posts  •  created by William Orem   •  May. 27, 2008 @ 18:15 GMT
"Here’s what I’m wondering: At Plank Density or greater, distinctions such as “here” and “there” have no operational meaning. When the universe was at this density, were simple arithmetical..."

Tegmark's Mathematical Universe
242 posts  •  created by Anthony Aguirre   •  May. 1, 2007 @ 13:03 GMT
"While he would be too modest to toot his own horn, there's nothing stopping me from pointing out that 'mad Max' has recently put out a very interesting paper on whether all possible formal systems..."

Wave function collapse demystified
161 posts  •  created by Antony Garrett Lisi   •  Apr. 27, 2007 @ 13:11 GMT
"There has always been an aura of mystical speculation surrounding quantum mechanics and the role of consciousness. The interpretation of wave function collapse (usually referred to as "the measurement..."

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