Identity and Individuality in Quantum Theory


	Identity and Individuality in Quantum Theory
Silkweaver
8-27-2008 6:54 PM
648 views
tags:
quantum physics, metaphysics
Silkweaver says:
Interesting read in the foundation of quantum physics.
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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/2a374cee-2e15-40d0-9e2c-160712627b74/BA192C2C-5C16-449B-90EA-C4DE23431EF1/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://mahinth.blogspot.com/2006/06/quantum-physics-explained_08.html" href="http://mahinth.blogspot.com/2006/06/quantum-physics-explained_08.html" style="font-size: 11px;">mahinth.blogspot.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://mahinth.blogspot.com/2006/06/quantum-physics-explained_08.html"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/mahinth.blogspot.com/img/0934627D-4684-4D47-B3EA-FF73921F8B62" alt="" /></div></blockquote><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content8.clipmarks.com/images/clip-icon.gif" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://plato.stanford.edu/entries/qt-idind/" href="http://plato.stanford.edu/entries/qt-idind/" style="font-size: 11px;">plato.stanford.edu</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/">What are the metaphysical implications of quantum physics?</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/">One way of
approaching this question is to consider the impact of the theory on
our understanding of objects as individuals with well defined identity
conditions.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/">One view is that quantum theory implies that the
fundamental particles of physics cannot be regarded as individual
objects in this sense.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/">Such a view has motivated the development of
non-standard formal systems which are appropriate for representing such
non-individual objects.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/">However, it has also been argued that quantum
physics is in fact compatible with a metaphysics of individual objects.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/"><li style="margin-left:16px;padding-left: 0px;"><A href="#Intro" linkindex="22" set="yes">1. Introduction</A></LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/"><li style="margin-left:16px;padding-left: 0px;"><A href="#Non-Ind" linkindex="23" set="yes">2. Quantum Non-Individuality</A></LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/"><li style="margin-left:16px;padding-left: 0px;"><A href="#Ind" linkindex="24" set="yes">3. Quantum Individuality</A></LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/"><li style="margin-left:16px;padding-left: 0px;"><A href="#PII" linkindex="25" set="yes">4. Quantum Physics and the Identity of Indiscernibles</A></LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/"><li style="margin-left:16px;padding-left: 0px;"><A href="#Self-Ind" linkindex="26" set="yes">5. Non-individuality and self-identity</A></LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/"><li style="margin-left:16px;padding-left: 0px;"><A href="#Meta" linkindex="27" set="yes">6. Metaphysical Underdetermination</A></LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/"><li style="margin-left:16px;padding-left: 0px;"><A href="#Bib" linkindex="28" set="yes">Bibliography</A></LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://plato.stanford.edu/entries/qt-idind/"><li style="margin-left:16px;padding-left: 0px;"><A href="#Oth" linkindex="29" set="yes">Other Internet Resources</A></LI></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/BA192C2C-5C16-449B-90EA-C4DE23431EF1/blog/" title="blog or email this clip"><img src="http://content9.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>
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