Paul P. Budnik Jr.
Oct5-04, 06:42 AM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>There is a recent article (April 2003) in Europhysics Letters that\nclaims we are still far from an effective test of Bell\'s inequality.\nThe full text is availible at\nhttp://arxiv.org/PS_cache/quant-ph/pdf/0212/0212060.pdf.\n\nHere is the abstract:\n\nWe emphasize the difficulties of an experiment that can definitely\ndiscriminate between local realistic hidden-variables theories and\nquantum mechanics using the Bell CHSH inequalities and a real\nmeasurement apparatus. In particular, we analyze some examples in\nwhich the noise in real instruments can alter the experimental\nresults, and the nontrivial problem to find a real "fair sample" of\nparticles to test the inequalities.\n\nand the conclusion:\n\nBell\'s inequality tests necessitate major improvements of technology\nin order to finally, after more than 15 years, go significantly beyond\nthe 1982 experiment of Aspect et al. [7]. While expecting that any\nimproved experiment will also agree with quantum theory, actually the\nfinal answer to the eternal question: "Is the moon there, when nobody\nlooks?", is certainly up to our judgement capability. But sometime\nalso the question "Is the moon there when we look at it by a noisy\ntelescope?" appears very hard to address.\n\nPaul Budnik\npaul@mtnmath.com\nwww.mtnmath.com\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form"> View this Usenet post in original ASCII form </a></div><P></jabberwocky>There is a recent article (April 2003) in Europhysics Letters that
claims we are still far from an effective test of Bell's inequality.
The full text is availible at
http://arxiv.org/PS_cache/quant-ph/pdf/0212/0212060.pdf.
Here is the abstract:
We emphasize the difficulties of an experiment that can definitely
discriminate between local realistic hidden-variables theories and
quantum mechanics using the Bell CHSH inequalities and a real
measurement apparatus. In particular, we analyze some examples in
which the noise in real instruments can alter the experimental
results, and the nontrivial problem to find a real "fair sample" of
particles to test the inequalities.
and the conclusion:
Bell's inequality tests necessitate major improvements of technology
in order to finally, after more than 15 years, go significantly beyond
the 1982 experiment of Aspect et al. [7]. While expecting that any
improved experiment will also agree with quantum theory, actually the
final answer to the eternal question: "Is the moon there, when nobody
looks?", is certainly up to our judgement capability. But sometime
also the question "Is the moon there when we look at it by a noisy
telescope?" appears very hard to address.
Paul Budnik
paul@mtnmath.com
www.mtnmath.com
claims we are still far from an effective test of Bell's inequality.
The full text is availible at
http://arxiv.org/PS_cache/quant-ph/pdf/0212/0212060.pdf.
Here is the abstract:
We emphasize the difficulties of an experiment that can definitely
discriminate between local realistic hidden-variables theories and
quantum mechanics using the Bell CHSH inequalities and a real
measurement apparatus. In particular, we analyze some examples in
which the noise in real instruments can alter the experimental
results, and the nontrivial problem to find a real "fair sample" of
particles to test the inequalities.
and the conclusion:
Bell's inequality tests necessitate major improvements of technology
in order to finally, after more than 15 years, go significantly beyond
the 1982 experiment of Aspect et al. [7]. While expecting that any
improved experiment will also agree with quantum theory, actually the
final answer to the eternal question: "Is the moon there, when nobody
looks?", is certainly up to our judgement capability. But sometime
also the question "Is the moon there when we look at it by a noisy
telescope?" appears very hard to address.
Paul Budnik
paul@mtnmath.com
www.mtnmath.com