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<p class="MsoNormal"><span style="font-family:"Georgia","serif"">Please join us <b>
TODAY</b> for the Condensed Matter Theory Seminar presented by David Pekker from the University of Pittsburgh on Monday, November 24<sup>th</sup> at 11:30am in the Smith Seminar Room (1080 PRB). The title and abstract are listed below.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia","serif"">“Many-body localization”<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia","serif"">Abstract: In the past, condensed matter physicists have identified two types of insulators: band insulators and Mott insulators. In both types the Fermi surface lies inside a gap (either a band
gap or an interactions induced gap) and hence there are no electronic states to carry a current. Recently, the interplay of disorder and interaction has been shown to result in a new type of insulator: the many-body localized insulator. Unlike band- and Mott-insulators
that show Arrhenius conductivity at finite temperatures (due to thermal activation over the gap), the many-body localized insulator shows exactly zero conductivity. In my talk, I will describe the origin of this and other properties of this fascinating novel
phase of matter.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia","serif"">Thank you,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia","serif"">Trisch<o:p></o:p></span></p>
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