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  1. RUTA

    Insights Dark Energy Part 3: Fitting the SCP Union 2.1 Supernova Data

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  2. RUTA

    Insights Dark Energy Part 2: LCDM Cosmology

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  3. RUTA

    Insights Dark Energy Part 1: Einstein-deSitter Cosmology

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  4. RUTA

    Insights The Quantum Mystery of Wigner's Friend - Comments

    Greg Bernhardt submitted a new blog post Wigner's Friend Continue reading the Original Blog Post.
  5. RUTA

    Insights The Unreasonable Effectiveness of the Popescu-Rohrlich Correlations - Comments

    Greg Bernhardt submitted a new blog post The Unreasonable Effectiveness of the Popescu-Rohrlich Correlations Continue reading the Original Blog Post.
  6. RUTA

    Insights Why the Quantum | A Response to Wheeler's 1986 Paper - Comments

    Greg Bernhardt submitted a new PF Insights post Why the Quantum | A Response to Wheeler's 1986 Paper Continue reading the Original PF Insights Post.
  7. RUTA

    Insights The Schwarzschild Metric: Part 3, A Newtonian Comparison - Comments

    Greg Bernhardt submitted a new PF Insights post The Schwarzschild Metric: Part 3, A Newtonian Comparison Continue reading the Original PF Insights Post.
  8. RUTA

    Insights The Schwarzschild Metric: Part 2, The Photon Sphere - Comments

    Greg Bernhardt submitted a new PF Insights post The Schwarzschild Metric: Part 2, The Photon Sphere Continue reading the Original PF Insights Post.
  9. RUTA

    Insights The Schwarzschild Metric: Part 1, GPS Satellites - Comments

    Greg Bernhardt submitted a new PF Insights post The Schwarzschild Metric: Part 1, GPS Satellites Continue reading the Original PF Insights Post.
  10. RUTA

    Cheshire Cat Experiment in July Issue of Nature

    I was wondering what people thought of the Cheshire Cat experiment published in the July 2014 issue of Nature Communications: http://www.nature.com/ncomms/2014/140729/ncomms5492/full/ncomms5492.html. The conclusion is that "any probe system that interacts with the Cheshire Cat system weakly...
  11. RUTA

    "Asking photons where they've been" -- the DFBV experiment

    Here's an experiment using weak measurements on photons in a "nested interferometer." They conclude: In conclusion, we have performed direct measurements which shed new light on the question: Where were the photons passing through an interferometer? The main results are presented in Fig. 2B...
  12. RUTA

    The physical world cannot be a single history

    Here is a fun talk by Fay Dowker on a path integral approach to the Greenberger-Horne-Zeilinger (GHZ) correlations. It's a physical instantiation of N. David Mermin's "no instruction sets" for GHZ in his Am. J. Phys. paper "Quantum mysteries revisited," v58, Aug 1990, 731-734. The talk...
  13. RUTA

    Opinions on Farewell to Reality

    Just finished Jim Baggott's book, "Farewell to Realilty: How Modern Physics has Betrayed the Search for Scientific Truth." Anyone here read the book and care to respond?
  14. RUTA

    Action-at-a-distance in Sideways EPR-Bell?

    Huw Price is speaking tomorrow (9 Nov) at the Univ of Maryland on his recent paper, "New Slant on the EPR-Bell Experiment," co-authored with Peter Evans and Ken Wharton (arXiv: 1001.5057v3 [quant-ph] 20 Jun 2010). In this paper, they argue that the ontological use of action-at-a-distance...
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