Tag Archives: Black Holes

Will Quantum Gravity Get Us to the Stars?

Posted on August 8, 2013 by PlatoHagel

The Foundational Questions Institute (FQXi) 2nd International Conference in Ponta Delgada, Azores. July 7-12, 2009. Topics include cosmology, astrophysics, gravity, quantum gravity, quantum theory, and high-energy physics. http://www.fqxi.org/ The Meduso-Anthropic Principle is a speculative theory by Louis Crane (1994). The … Continue reading →

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Lee Smolin: Cosmological Natural Selection

Posted on August 7, 2013 by PlatoHagel

Which leads to a prediction or an observation that after many, many generations the population of the universes should be fine-tuned to maximize the production of Black Holes. And that has further implications for things that we can actually try … Continue reading →

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Information Loss

Posted on July 23, 2013 by PlatoHagel

You see, people are uncomfortable with this information loss. It’s the minority view.Pg 64, The Cyclic Universe: A Conversation with Roger Penrose I am certainly uncomfortable with it, as I have always seen it from the idea  as to what … Continue reading →

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Glowing Blackholes

Posted on May 14, 2013 by PlatoHagel

(Courtesy: NASA E/PO, Sonoma State University, Aurore Simonnet) The birth of a black hole may be signalled by a characteristic cosmic flash, according to researchers in the US. It was previously thought that only the most massive of black holes … Continue reading →

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The Blackhole Hunt is On

Posted on May 5, 2013 by PlatoHagel

Published on May 30, 2012  See: NuSTAR to Hunt for Black Holes NuSTAR NASA contracted with Orbital Sciences Corporation to launch NuSTAR (mass 772 pounds (350 kg))[11] on a Pegasus XL rocket for 21 March 2012.[5] It had earlier been planned … Continue reading →

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Black Hole Thoughts are Spoken: Complementarity vs Firewall

Posted on September 23, 2012 by PlatoHagel

Black Holes: Complementarity vs Firewalls Subtitle: Strings 2012 Speaker: Raphael Bousso Location: Ludwig-Maximilians-Universität München Date: 27.07.2012 @ 16:04 Ahmed Almheiri, Donald Marolf, Joseph Polchinski, James Sully We argue that the following three statements cannot all be true: (i) Hawking radiation is in a pure … Continue reading →

Posted in Black Holes, Microscopic Blackholes, Microstate Blackholes, Stephen Hawking, String Theory | Tagged , , , , , , | Leave a comment

Illusions of Grandeur?

Posted on May 15, 2012 by PlatoHagel

Illusions of Gravity Three spatial dimensions are visible all around us–up/down, left/right, forward/backward. Add time to the mix, and the result is a four-dimensional blending of space and time known as spacetime. Thus, we live in a four-dimensional universe. Or … Continue reading →

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Blackhole Wars

Posted on January 17, 2009 by PlatoHagel

The Cosmic Landscape, Page 339, Para 2. Dialogos of Eide

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Blackhole Information Paradox

Posted on March 26, 2008 by PlatoHagel

What good is a universe without somebody around to look at it?Robert Dicke John Archibald Wheeler (born July 9, 1911) is an eminent American theoretical physicist. One of the later collaborators of Albert Einstein, he tried to achieve Einstein’s vision … Continue reading →

Posted in Black Holes, Colour of Gravity, Jacob Bekenstein, Kip Thorne, Sir Roger Penrose, Stephen Hawking | Tagged , , , , , , | 6 Comments

Stringy Geometry

Posted on March 8, 2008 by PlatoHagel

fancier way of saying that is that in general, it’s okay to model the space around us using the Euclidean metric. But the Euclidean model stops working when gravity becomes strong, as we’ll see later. The Euclidean model for space … Continue reading →

Posted in Black Holes, Finiteness in String theory Landscape, Holonomy, KK Tower, String Theory, Topology | Tagged , , , , , | Leave a comment