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<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3><FONT
face=Arial
size=2> <STRONG>
COLOQUIO EXTRAORDINARIO</STRONG></FONT> </FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3>
</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3> COLOQUIOS DEL
DEPARTAMENTO DE
FÍSICA<BR>
FCEyN -
UBA<BR><BR>
Charla, café
y galletitas<BR> En
el Aula Federman, 1er piso Pabellón
I.<BR>
Ciudad Universitaria</FONT> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3>
El próximo <STRONG>viernes</STRONG> 5 de septiembre a las
14 hs<FONT face=Arial size=2> </FONT></FONT></FONT></DIV>
<DIV><SPAN
style="FONT-SIZE: 24pt; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-bidi-font-weight: bold"><SPAN
class=MquinadeescribirHTML2><SPAN lang=ES-AR
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT face="Times New Roman"><SPAN
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><SPAN
lang=ES-AR
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES-AR; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><SPAN
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face="Times New Roman"><SPAN
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face="Times New Roman"><SPAN
style="FONT-SIZE: 24pt; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-bidi-font-weight: bold"><SPAN
class=MquinadeescribirHTML2><SPAN lang=ES-AR
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT face="Times New Roman"><SPAN
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lang=ES-AR
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES-AR; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><SPAN
style="FONT-SIZE: 22pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><SPAN><FONT
face="Times New Roman" size=5><SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><FONT
size=6> </DIV>
<DIV>
<P class=MsoBodyText style="MARGIN: 0cm 0cm 0pt"><SPAN lang=IT><FONT face=Arial
size=5><FONT
face="Times New Roman"><STRONG>
<SPAN lang=EN-GB
style="FONT-SIZE: 24pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><FONT
face="Times New Roman" size=5>A two-particle Aharonov-Bohm effect:
</FONT></SPAN></STRONG></FONT></FONT></SPAN></P>
<P class=MsoBodyText style="MARGIN: 0cm 0cm 0pt"><SPAN lang=IT><FONT face=Arial
size=5><FONT face="Times New Roman"><STRONG><SPAN lang=EN-GB
style="FONT-SIZE: 24pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><FONT
face="Times New Roman" size=5>Bell Inequality and Quantum Tomography<SPAN
style="mso-spacerun: yes"> </SPAN>at finite temperature</FONT>
</SPAN></STRONG></FONT></FONT></SPAN></P>
<P class=MsoBodyText style="MARGIN: 0cm 0cm 0pt"><SPAN lang=IT><FONT face=Arial
size=5><FONT face="Times New Roman" size=5><STRONG><SPAN lang=EN-GB
style="FONT-SIZE: 24pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"></SPAN></STRONG></FONT></FONT></SPAN><SPAN
lang=IT><STRONG><FONT face=Arial
size=5></FONT></STRONG></SPAN> </P></FONT></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN>
<DIV><SPAN
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class=MquinadeescribirHTML2><SPAN lang=ES-AR
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT face="Times New Roman"><SPAN
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><SPAN
lang=ES-AR
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES-AR; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><SPAN
style="FONT-SIZE: 22pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><SPAN><FONT
face="Times New Roman"><SPAN
style="FONT-SIZE: 24pt; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-bidi-font-weight: bold"><SPAN
class=MquinadeescribirHTML2><SPAN lang=ES-AR
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT face="Times New Roman"><SPAN
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><SPAN
lang=ES-AR
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES-AR; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><SPAN
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face="Times New Roman"><SPAN
style="FONT-SIZE: 24pt; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-bidi-font-weight: bold"><SPAN
class=MquinadeescribirHTML2><SPAN lang=ES-AR
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT face="Times New Roman"><SPAN
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><SPAN
lang=ES-AR
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face="Times New Roman" size=5><SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><FONT
size=6></DIV></FONT></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN><SPAN
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size=5><SPAN><FONT face="Times New Roman"><SPAN
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style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT face="Times New Roman"><SPAN
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size=5><SPAN><FONT face="Times New Roman"><SPAN
style="FONT-SIZE: 24pt; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-bidi-font-weight: bold"><SPAN
class=MquinadeescribirHTML2><SPAN lang=ES-AR
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT face="Times New Roman"><SPAN
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><SPAN
lang=ES-AR
style="FONT-SIZE: 26pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES-AR; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><SPAN
style="FONT-SIZE: 22pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'"><FONT
size=5><SPAN><FONT face="Times New Roman"><STRONG><FONT
size=6></FONT></STRONG></DIV>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=ES-AR><FONT
size=3><SPAN
style="mso-spacerun: yes"> <FONT
size=5> <SPAN lang=EN-GB
style="FONT-SIZE: 18pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><STRONG>Markus
Buttiker</STRONG></SPAN></FONT></SPAN></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=ES-AR><FONT face=Arial
size=2></FONT></SPAN> </P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=ES-AR><FONT
size=4><SPAN style="mso-spacerun: yes"><SPAN lang=EN-GB
style="FONT-SIZE: 12pt; mso-ansi-language: EN-GB; mso-fareast-font-family: 'MS Mincho'"> <FONT
size=4> </FONT><FONT
size=3> <SPAN
lang=EN-GB
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><FONT
size=4>University of</FONT> <FONT
size=4>Geneva</FONT></SPAN></FONT></SPAN></SPAN></FONT></SPAN><SPAN
lang=ES-AR></P><?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN>
<DIV></FONT></SPAN></FONT></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></FONT></SPAN></FONT></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN></FONT></SPAN></FONT></SPAN></SPAN></SPAN></FONT></SPAN></SPAN></SPAN><FONT
face=Arial size=2><FONT face=Arial size=2><FONT face=Arial size=2><SPAN
lang=EN-GB
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face="Times New Roman"
size=3> </FONT></SPAN><FONT
face=Arial size=2><SPAN lang=ES-AR style="mso-ansi-language: ES-AR"><FONT
face="Times New Roman"
size=3>
</FONT></SPAN></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=ES-AR
style="mso-ansi-language: ES-AR"></SPAN>-----------------------------------------------------------------------------------------------------------------------------------------------</P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><BR> </P></DIV>
<DIV><FONT face="Times New Roman" size=3>RESUMEN:</FONT></DIV>
<DIV><SPAN style="mso-ansi-language: ES"><O:P><FONT face="Times New Roman"
size=3> </FONT></O:P></SPAN></DIV>
<DIV align=justify><SPAN style="mso-ansi-language: ES"><O:P></O:P></SPAN><SPAN
style="mso-ansi-language: ES"><O:P><SPAN
style="FONT-SIZE: 16pt; mso-bidi-font-size: 12.0pt"><SPAN
style="FONT-SIZE: 16pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><SPAN
style="FONT-SIZE: 18pt; mso-bidi-font-size: 12.0pt"><FONT
face="Times New Roman"><SPAN class=MquinadeescribirHTML2><SPAN lang=ES-AR
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT face="Times New Roman"><FONT
face="Century Gothic" color=black><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Century Gothic'"><FONT
face="Times New Roman"><SPAN
style="FONT-SIZE: 16pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><FONT
size=3><SPAN
style="FONT-SIZE: 16pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><FONT
size=3><SPAN lang=ES-AR style="mso-ansi-language: ES-AR"><SPAN lang=ES-AR
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: ES-AR; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><SPAN
style="FONT-SIZE: 16pt; mso-bidi-font-size: 12.0pt"><FONT size=3><SPAN
style="FONT-SIZE: 16pt; mso-bidi-font-size: 12.0pt"><FONT size=3><SPAN
lang=ES-AR
style="FONT-SIZE: 16pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES-AR; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><SPAN
lang=ES-AR
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-ansi-language: ES-AR; mso-bidi-font-family: 'Times New Roman'"><FONT
face="Times New Roman"><SPAN
style="FONT-SIZE: 16pt; mso-bidi-font-size: 12.0pt"><SPAN
style="FONT-SIZE: 16pt; mso-bidi-font-size: 12.0pt"><FONT size=3><SPAN
style="FONT-SIZE: 20pt; mso-bidi-font-size: 12.0pt"><SPAN lang=ES-AR><SPAN
style="mso-ansi-language: ES"><SPAN lang=ES-AR
style="FONT-SIZE: 15pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: ES-AR; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: Times-Roman"><FONT
face=Arial size=3>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=FR
style="FONT-SIZE: 12pt; mso-ansi-language: FR; mso-fareast-font-family: 'MS Mincho'"><SPAN
lang=EN-US
style="FONT-SIZE: 16pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-US; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><FONT
size=3><SPAN lang=EN-GB
style="FONT-SIZE: 16pt; COLOR: black; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA"><FONT
size=3>In small conductors at low temperatures, the wave nature of electrons
becomes important. I briefly review the development of the<SPAN
style="mso-spacerun: yes"> </SPAN>Aharonov-Bohm<SPAN
style="mso-spacerun: yes"> </SPAN>(AB) effect as a tool to demonstrate
quantum interference and discuss a novel AB effect in which two particles are
necessary to enclose a flux, which can be tested by current fluctuations known
as shot noise. Of interest are geometries<SPAN style="mso-spacerun: yes">
</SPAN>where the two-particle AB effect even when there exists no
single-particle AB effect. At zero-temperature the novel AB effect is a witness
of orbital entanglement: its amplitude directly determines the degree of
violation of a Bell inequality. At finite temperatures the entanglement
detectable </FONT></SPAN><SPAN lang=EN-GB
style="FONT-SIZE: 16pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA; mso-bidi-font-family: cmr9"><FONT
size=3>by currents and current correlations is quantified by the reduced density
matrix. In contrast to optical detectors, electrical conductors can<SPAN
style="mso-spacerun: yes"> </SPAN>exchange particles with the sample,
necessitating a completely novel discussion of entanglement detection</FONT>
.</SPAN></FONT></SPAN></SPAN>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify"></P></FONT></SPAN></SPAN>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 36pt; TEXT-ALIGN: justify"></SPAN><SPAN
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