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Dear colleagues,<br>
</p>
it is my pleasure to invite you to Seminar of Institute of Physics
of Charles University, entitled:
<p><b>Characterization of delocalization-localization transitions
from full density distributions</b><br>
</p>
<p style="margin-bottom: 0in; line-height: 100%; text-decoration:
none" align="center"><font face="Calibri, serif"><font
style="font-size: 11pt" size="2"><span style="background:
transparent"><font face="Times New Roman, serif"><font
style="font-size: 14pt" size="4"><span lang="en-US"></span></font></font></span></font></font></p>
Speaker: Mgr. Miroslav Hopjan, Ph.D. (<font face="Calibri, serif"><font
style="font-size: 11pt" size="2"><span style="background:
transparent"></span></font></font>1,2)
<p style="margin-bottom: 0in; line-height: 100%; text-decoration:
none" align="center"> <font face="Calibri, serif"><font
style="font-size: 11pt" size="2"><span style="background:
transparent"><sup><font face="Times New Roman, serif"><font
style="font-size: 12pt" size="3">1</font></font></sup><font
face="Times New Roman, serif"><font style="font-size:
12pt" size="3"><span lang="fr-FR"><i> Institut
f</i></span></font></font><font face="Times New
Roman, serif"><font style="font-size: 12pt" size="3"><i>ü</i></font></font><font
face="Times New Roman, serif"><font style="font-size:
12pt" size="3"><span lang="de-DE"><i>r
Theoretische Physik, Georg-August-Universitat G</i></span></font></font><font
face="Times New Roman, serif"><font style="font-size:
12pt" size="3"><span lang="sv-SE"><i>ö</i></span></font></font><font
face="Times New Roman, serif"><font style="font-size:
12pt" size="3"><i>ttingen,
G</i></font></font><font face="Times New Roman, serif"><font
style="font-size: 12pt" size="3"><span lang="sv-SE"><i>ö</i></span></font></font><font
face="Times New Roman, serif"><font style="font-size:
12pt" size="3"><span lang="de-DE"><i>ttingen,
Germany</i></span></font></font></span></font></font></p>
<p style="margin-bottom: 0in; line-height: 100%; text-decoration:
none" align="center"> <font face="Calibri, serif"><font
style="font-size: 11pt" size="2"><span style="background:
transparent"><sup><font face="Times New Roman, serif"><font
style="font-size: 12pt" size="3">2
</font></font></sup><font face="Times New Roman, serif"><font
style="font-size: 12pt" size="3"><i>currently:
D</i></font></font><font face="Times New Roman, serif"><font
style="font-size: 12pt" size="3"><span lang="en-US"><i>epartment
of Theoretical Physics, J. Stefan Institute,</i></span></font></font><font
face="Times New Roman, serif"><font style="font-size:
12pt" size="3"><i>
Ljubljana, Slovenia</i></font></font></span></font></font><br>
</p>
<p style="margin-bottom: 0in; line-height: 100%; text-decoration:
none" align="center">Time: Tuesday 21.12.2021 from 14:00<br>
<br>
Place: Seminar room of Institute of Physics F285 (atelier) ,
second floor, Ke Karlovu 5, Prague</p>
<p style="margin-bottom: 0in; line-height: 100%; text-decoration:
none" align="center"><font face="Calibri, serif"><font
style="font-size: 11pt" size="2"><span style="background:
transparent"></span></font></font>Abstract:</p>
<p style="margin-top: 0.08in; margin-bottom: 0in; line-height: 100%;
text-decoration: none" align="justify">Characterizing the
delocalization-localization transition in closed interacting
quantum systems with a many-body localized (MBL) phase is a key
open question in the field of nonequilibrium physics. Typical
experiments, designed to detect the many-body
delocalization-localization transition, measure the dynamical
properties of such systems [1]. However, much work has been done
to provide evidence of the transition in the structure of
many-body eigenstates. One of such evidences for MBL is
localization of the eigenstates in the Fock space [2].<br>
<br>
In our recent work [4], we exploit the fact that localization of
particles as realized in Anderson localization and standard
many-body localization implies Fock-space localization in the Fock
space of states characterized by a real-space index. Using a
recently introduced quantitative measure for Fock-space
localization computed from the density distributions, the
occupation distance [3], we systematically study its scaling
behavior across delocalization-localization transitions [4]. We
contrast results for the MBL phase to a standard
Anderson-localized phase and we point out their differences which
are consistent with different mechanisms for the transitions.<br>
</p>
<p>[1] Lukin et al. Science 364, 256 (2019), Choi et al, Science
352, 1547 (2016)<br>
[2] S. Bera, H. Schomerus, F. Heidrich-Meisner, and J. H.
Bardarson, PRL 115, 046603 (2015)<br>
[3] M. Hopjan and F. Heidrich-Meisner, PRA 101, 063617 (2020)<br>
[4] M. Hopjan, G. Orso and F. Heidrich-Meisner, PRB 104, 235112
(2021)</p>
<p>With my best regards</p>
<p>Jaroslav Hamrle<br>
</p>
<p>
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<pre class="moz-signature" cols="72">--
------------------------------------------------------------------
Mgr. Jaroslav Hamrle, Ph.D.
Institute of Physics, room F232
Faculty of Mathematics and Physics
Charles University
Ke Karlovu 5
121 16 Prague
Czech Republic
tel: +420-95155 1340
email: <a class="moz-txt-link-abbreviated" href="mailto:hamrle@karlov.mff.cuni.cz">hamrle@karlov.mff.cuni.cz</a>
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