holographic principle
https://plus.maths.org/content/taxonomy/term/898
enBlack holes: Paradox regained
https://plus.maths.org/content/black-holes-paradox-regained
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Anil Ananthaswamy </div>
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<p>In 2004 Stephen Hawking famously conceded that black holes do not devour all information when they swallow matter — seemingly resolving the black hole information paradox that had perplexed physicists for decades. But some argue that the paradox remains open and we must abandon our simple picture of spacetime to unravel it.</p>
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<p><em>This article first appeared on the <a href="http://www.fqxi.org/community">FQXi community website</a>. FQXi are our partners in our <a href="https://plus.maths.org/content/information-about-information">Information about information project</a>. Click <a href="https://plus.maths.org/content/are-there-limits-information">here</a> to read other articles on information and black holes.</em></p><p><a href="https://plus.maths.org/content/black-holes-paradox-regained" target="_blank">read more</a></p>https://plus.maths.org/content/black-holes-paradox-regained#commentsblack holeholographic principlequantum field theoryMon, 03 Nov 2014 10:20:34 +0000mf3446219 at https://plus.maths.org/contentIn a lower dimension
https://plus.maths.org/content/lower-dimension
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Marianne Freiberger </div>
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<img class="imagefield imagefield-field_abs_img" width="100" height="100" alt="" src="https://plus.maths.org/content/sites/plus.maths.org/files/abstractpics/5/8_oct_2014_-_1413/icon-1.jpg?1412774034" /> </div>
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<p>Could the world be simpler than our senses suggest?</p>
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<div class="rightimage" style="width: 250px;"><img src="https://plus.maths.org/content/sites/plus.maths.org/files/packages/2013/QM/qmlogo_0.jpg" width="250" height="62" alt="QM logo"/></div><p><em>This article is part of the <a href="https://plus.maths.org/content/researching-unknown">Researching the unknown project</a>, a collaboration with researchers from <a href="http://ph.qmul.ac.uk/">Queen Mary University of London</a>, bringing you the latest research on the forefront of physics. Click <a href="https://plus.maths.org/content/researching-unknown">here</a> to read more articles from the project.</em></p><p><a href="https://plus.maths.org/content/lower-dimension" target="_blank">read more</a></p>https://plus.maths.org/content/lower-dimension#commentsholographic principlequantum field theorystring theorytheoretical physicsFri, 10 Oct 2014 13:32:09 +0000mf3446192 at https://plus.maths.org/contentStrings, particles and the early Universe
https://plus.maths.org/content/strings-particles-and-early-universe
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The Plus Team </div>
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The <em>Strong Fields, Integrability and Strings</em>
programme, which took place at the Isaac
Newton Institute in 2007, explored an area that
would have been close to Isaac Newton's heart:
how to unify Einstein's theory of gravity, a
continuation of Newton's own work on
gravitation, with quantum field theory, which
describes the atomic and sub-atomic world, but
cannot account for the force of gravity. </div>
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<p><em>This article is part of a <a href="https://plus.maths.org/content/isaac-newton-institute">series</a> celebrating the 20th birthday of the <a href="http://www.newton.ac.uk/">Isaac Newton Institute</a> in Cambridge. The Institute is a place where leading mathematicians from around the world can come together for weeks or months at a time to indulge in what they like doing best: thinking about maths and exchanging ideas without the distractions and duties that come with their normal working lives.<p><a href="https://plus.maths.org/content/strings-particles-and-early-universe" target="_blank">read more</a></p>https://plus.maths.org/content/strings-particles-and-early-universe#commentsholographic principleNewton Institutequantum field theoryquantum gravitystring theorysupersymmetryThu, 19 Jul 2012 08:55:54 +0000mf3445435 at https://plus.maths.org/contentWhat's happening at the LHC?
https://plus.maths.org/content/whats-happening-lhc
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<p>It's been nearly 18 months since the Large
Hadron Collider at CERN started up and scientists are eagerly awaiting their first glimpse into the
cosmic mysteries it was designed to explore. But when can we realistically
expect the first ground-breaking discoveries to come through? Last week, <a href="http://ph-dep-th.web.cern.ch/ph-dep-th/?site=php/viewprofile.php&id=31">John Ellis</a>,
outgoing leader of the theory division at CERN, addressed an audience
of physicists at the University of Cambridge to update them on the
current state of play. <em>Plus</em> went along and also managed to
catch Ellis for a quick interview.</p>
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<p>This week CERN <a href="http://press.web.cern.ch/press/PressReleases/Releases2011/PR01.11E.html">announced</a> that the Large
Hadron Collider (LHC) will run until the end of 2012, rather than being shut down earlier for an upgrade, as had been planned.
"If LHC continues to improve in 2011 as it did in 2010, we've got a very exciting year ahead of us," said CERN's Director for Accelerators and Technology, Steve Myers. "The signs are that we should be able to increase the data collection rate by at least a factor of three over the course of this year."</p><p><a href="https://plus.maths.org/content/whats-happening-lhc" target="_blank">read more</a></p>https://plus.maths.org/content/whats-happening-lhc#commentsmathematical realityblack holedark matterhiggs bosonHiggs fieldholographic principleLHCstring theoryWed, 02 Feb 2011 14:50:39 +0000mf3445415 at https://plus.maths.org/contentThe illusory Universe
https://plus.maths.org/content/illusory-universe
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Marianne Freiberger </div>
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With online socialising and alternative realities like <i>Second Life</i> it may seem as if reality has become a whole lot bigger over the last few years. In one branch of theoretical physics, though, things seem to be going the other way. String theorists have been developing the idea that the space and time we inhabit, including ourselves, might be nothing more than an illusion, a hologram
conjured up by a reality which lacks a crucial feature of the world as we perceive it: the third dimension. <i>Plus</i> talks to <b>Juan Maldacena</b> to find out more. </div>
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<p><i>With many of us living a good chunk of our lives online it may seem as if reality has become a whole lot bigger over the last few years. In one branch of theoretical physics, though, things seem to be going the other way. Over the last two decades string theorists have been developing the idea that the space and time we inhabit, including ourselves, might be nothing more than an
illusion, a hologram conjured up by a reality which lacks a crucial feature of the world as we perceive it: the third dimension.<p><a href="https://plus.maths.org/content/illusory-universe" target="_blank">read more</a></p>https://plus.maths.org/content/illusory-universe#comments5151ablack holecosmologyentropygeneral relativityholographic principlequantum gravityquantum mechanicsrelativitystring theoryTue, 30 Jun 2009 23:00:00 +0000plusadmin2364 at https://plus.maths.org/content