<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:georss="http://www.georss.org/georss" xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#" xmlns:media="http://search.yahoo.com/mrss/"
		>
<channel>
	<title>Comments for Shores of the Dirac Sea</title>
	<atom:link href="http://diracseashore.wordpress.com/comments/feed/" rel="self" type="application/rss+xml" />
	<link>http://diracseashore.wordpress.com</link>
	<description>A blog about physics... mostly.</description>
	<lastBuildDate>Tue, 23 Apr 2013 10:28:11 +0000</lastBuildDate>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.com/</generator>
	<item>
		<title>Comment on Woof Woof by Plato</title>
		<link>http://diracseashore.wordpress.com/2013/04/18/woof-woof/comment-page-1/#comment-4019</link>
		<dc:creator><![CDATA[Plato]]></dc:creator>
		<pubDate>Tue, 23 Apr 2013 10:28:11 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2220#comment-4019</guid>
		<description><![CDATA[You sparked memory of &lt;a href=&quot;http://2.bp.blogspot.com/_cldxKGOzgeM/RfpwM6LGoBI/AAAAAAAAAUk/kigOq_IjiJQ/s200/penquin.jpg&quot; rel=&quot;nofollow&quot;&gt;Penguin&lt;/a&gt; and related article.

&lt;blockquote&gt;&lt;i&gt;For some time, it was not clear to me how to get the word into this b quark paper that we were writing at the time…. Later…I had a sudden flash that the famous diagrams look like penguins. So we put the name into our paper, and the rest, as they say, is history.”&lt;/i&gt;&lt;a href=&quot;http://www.symmetrymagazine.org/article/januaryfebruary-2007/babars-window-on-the-weak-force&quot; rel=&quot;nofollow&quot;&gt;BaBar&#039;s window on the weak force&lt;/a&gt;&lt;/blockquote&gt;

So it looks like we can add a few more images to the list, while looking to Lubo&#039;s link.  Genus figure,  appear to look like a dog bone with holes in the end?:)

Best,]]></description>
		<content:encoded><![CDATA[<p>You sparked memory of <a href="http://2.bp.blogspot.com/_cldxKGOzgeM/RfpwM6LGoBI/AAAAAAAAAUk/kigOq_IjiJQ/s200/penquin.jpg" rel="nofollow">Penguin</a> and related article.</p>
<blockquote><p><i>For some time, it was not clear to me how to get the word into this b quark paper that we were writing at the time…. Later…I had a sudden flash that the famous diagrams look like penguins. So we put the name into our paper, and the rest, as they say, is history.”</i><a href="http://www.symmetrymagazine.org/article/januaryfebruary-2007/babars-window-on-the-weak-force" rel="nofollow">BaBar&#8217;s window on the weak force</a></p></blockquote>
<p>So it looks like we can add a few more images to the list, while looking to Lubo&#8217;s link.  Genus figure,  appear to look like a dog bone with holes in the end?:)</p>
<p>Best,</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Woof Woof by Pepe</title>
		<link>http://diracseashore.wordpress.com/2013/04/18/woof-woof/comment-page-1/#comment-4018</link>
		<dc:creator><![CDATA[Pepe]]></dc:creator>
		<pubDate>Tue, 23 Apr 2013 02:35:28 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2220#comment-4018</guid>
		<description><![CDATA[From which paper did you see this &quot;woof woof&quot; diagram?]]></description>
		<content:encoded><![CDATA[<p>From which paper did you see this &#8220;woof woof&#8221; diagram?</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Woof Woof by dberenstein</title>
		<link>http://diracseashore.wordpress.com/2013/04/18/woof-woof/comment-page-1/#comment-4010</link>
		<dc:creator><![CDATA[dberenstein]]></dc:creator>
		<pubDate>Fri, 19 Apr 2013 16:55:23 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2220#comment-4010</guid>
		<description><![CDATA[Hi Lubos:

I hadn&#039;t read the paper yet. Thanks for pointing these figures out. It&#039;s a great drawing. The big question is if it was intentionally happy, or just an accident.]]></description>
		<content:encoded><![CDATA[<p>Hi Lubos:</p>
<p>I hadn&#8217;t read the paper yet. Thanks for pointing these figures out. It&#8217;s a great drawing. The big question is if it was intentionally happy, or just an accident.</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Woof Woof by Lubos Motl</title>
		<link>http://diracseashore.wordpress.com/2013/04/18/woof-woof/comment-page-1/#comment-4009</link>
		<dc:creator><![CDATA[Lubos Motl]]></dc:creator>
		<pubDate>Fri, 19 Apr 2013 11:16:16 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2220#comment-4009</guid>
		<description><![CDATA[David, have you seen the figures in the latest Witten&#039;s paper, especially figure 8 on page 44?

http://arxiv.org/pdf/1304.2832.pdf]]></description>
		<content:encoded><![CDATA[<p>David, have you seen the figures in the latest Witten&#8217;s paper, especially figure 8 on page 44?</p>
<p><a href="http://arxiv.org/pdf/1304.2832.pdf" rel="nofollow">http://arxiv.org/pdf/1304.2832.pdf</a></p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Happy 3.1415926535&#8230; day by Wyrd Smythe</title>
		<link>http://diracseashore.wordpress.com/2013/03/14/happy-3-1415926535-day/comment-page-1/#comment-4004</link>
		<dc:creator><![CDATA[Wyrd Smythe]]></dc:creator>
		<pubDate>Sat, 06 Apr 2013 16:52:08 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2217#comment-4004</guid>
		<description><![CDATA[All things considered, I&#039;ve decided to join the ranks of those who celebrate 2pi day on June 28 (which is my mom&#039;s birthday).  As your own favorite equation shows, 2 and pi just go together like pie and ice cream!]]></description>
		<content:encoded><![CDATA[<p>All things considered, I&#8217;ve decided to join the ranks of those who celebrate 2pi day on June 28 (which is my mom&#8217;s birthday).  As your own favorite equation shows, 2 and pi just go together like pie and ice cream!</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Unstable Universes by Wyrd Smythe</title>
		<link>http://diracseashore.wordpress.com/2013/02/19/unstable-universes/comment-page-1/#comment-3966</link>
		<dc:creator><![CDATA[Wyrd Smythe]]></dc:creator>
		<pubDate>Fri, 01 Mar 2013 18:47:12 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2203#comment-3966</guid>
		<description><![CDATA[Yes, that&#039;s exactly what I was mocking. Concerns about the LHC when far more energetic events are going on above our heads all the time!  And considering what&#039;s going on in the center of active galaxies, I&#039;m not real worried about nucleation. :)]]></description>
		<content:encoded><![CDATA[<p>Yes, that&#8217;s exactly what I was mocking. Concerns about the LHC when far more energetic events are going on above our heads all the time!  And considering what&#8217;s going on in the center of active galaxies, I&#8217;m not real worried about nucleation. <img src='http://s0.wp.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Unstable Universes by dberenstein</title>
		<link>http://diracseashore.wordpress.com/2013/02/19/unstable-universes/comment-page-1/#comment-3965</link>
		<dc:creator><![CDATA[dberenstein]]></dc:creator>
		<pubDate>Fri, 01 Mar 2013 18:19:26 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2203#comment-3965</guid>
		<description><![CDATA[Hi Wyrd:

To answer your first question: yes, it has to be inside our light horizon to be a threat. It&#039;s exactly the fact that it has not happened yet that lets us put a probability bound on when it could possible happen in the most pessimistic scenario. Our past lightcone keeps on getting bigger, so the fact that inflation pushes stuff out is not as important in this case.

Regarding the LHC: it does not achieve the energy densities that would even get you close to being able to push through to the other vacuum. As comparison,  in nature there have been high energy cosmic ray events that can produce collisions with much higher center of mass energy than anything possible at the LHC. None of these events have produced a nucleation, and nature has done it way more times in our past lightcone than the LHC will ever have an opportunity to observe in collisions.]]></description>
		<content:encoded><![CDATA[<p>Hi Wyrd:</p>
<p>To answer your first question: yes, it has to be inside our light horizon to be a threat. It&#8217;s exactly the fact that it has not happened yet that lets us put a probability bound on when it could possible happen in the most pessimistic scenario. Our past lightcone keeps on getting bigger, so the fact that inflation pushes stuff out is not as important in this case.</p>
<p>Regarding the LHC: it does not achieve the energy densities that would even get you close to being able to push through to the other vacuum. As comparison,  in nature there have been high energy cosmic ray events that can produce collisions with much higher center of mass energy than anything possible at the LHC. None of these events have produced a nucleation, and nature has done it way more times in our past lightcone than the LHC will ever have an opportunity to observe in collisions.</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Unstable Universes by Wyrd Smythe</title>
		<link>http://diracseashore.wordpress.com/2013/02/19/unstable-universes/comment-page-1/#comment-3964</link>
		<dc:creator><![CDATA[Wyrd Smythe]]></dc:creator>
		<pubDate>Fri, 01 Mar 2013 17:45:07 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2203#comment-3964</guid>
		<description><![CDATA[If nucleation is limited to c, does that mean it has to be inside our light horizon to be a threat? I had understood that inflation suggests a vast amount of the universe was always outside our horizon, and that expansion pushes more and more of it outside all the time.

(Let&#039;s hope no one gets the idea that something like the LHC could &lt;em&gt;cause&lt;/em&gt; a nucleation!)]]></description>
		<content:encoded><![CDATA[<p>If nucleation is limited to c, does that mean it has to be inside our light horizon to be a threat? I had understood that inflation suggests a vast amount of the universe was always outside our horizon, and that expansion pushes more and more of it outside all the time.</p>
<p>(Let&#8217;s hope no one gets the idea that something like the LHC could <em>cause</em> a nucleation!)</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Unstable Universes by dberenstein</title>
		<link>http://diracseashore.wordpress.com/2013/02/19/unstable-universes/comment-page-1/#comment-3955</link>
		<dc:creator><![CDATA[dberenstein]]></dc:creator>
		<pubDate>Fri, 22 Feb 2013 18:27:39 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2203#comment-3955</guid>
		<description><![CDATA[Hmm? You don&#039;t agree that superheated water explodes? Or you don&#039;t agree that you can tunnel through a potential barrier? Or you don&#039;t agree that sufficiently large bubbles grow?]]></description>
		<content:encoded><![CDATA[<p>Hmm? You don&#8217;t agree that superheated water explodes? Or you don&#8217;t agree that you can tunnel through a potential barrier? Or you don&#8217;t agree that sufficiently large bubbles grow?</p>
]]></content:encoded>
	</item>
	<item>
		<title>Comment on Unstable Universes by Η αστάθεια του σύμπαντος και το μποζόνιο Higgs &#124; physicsgg</title>
		<link>http://diracseashore.wordpress.com/2013/02/19/unstable-universes/comment-page-1/#comment-3954</link>
		<dc:creator><![CDATA[Η αστάθεια του σύμπαντος και το μποζόνιο Higgs &#124; physicsgg]]></dc:creator>
		<pubDate>Fri, 22 Feb 2013 15:39:12 +0000</pubDate>
		<guid isPermaLink="false">http://diracseashore.wordpress.com/?p=2203#comment-3954</guid>
		<description><![CDATA[[...] είδους πρώτης τάξης μεταβάσεις μεταξύ δυο φάσεων ΕΔΩ: diracseashore.wordpress.com via motls.blogspot.com) Tο υπέρθερμο νερό, στο βίντεο που [...]]]></description>
		<content:encoded><![CDATA[<p>[...] είδους πρώτης τάξης μεταβάσεις μεταξύ δυο φάσεων ΕΔΩ: diracseashore.wordpress.com via motls.blogspot.com) Tο υπέρθερμο νερό, στο βίντεο που [...]</p>
]]></content:encoded>
	</item>
</channel>
</rss>