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Уважаемые сотрудники ИТФ,<br>
<br>
В пятницу 15 мая в 11:30 состоится онлайн коллоквиум с докладом:<br>
<br>
Piet Brouwer (Free University Berlin, Germany)<br>
<font size="+2"><b>Higher-order topological insulators and
superconductors</b></font><br>
<br>
Topological insulators combine an insulating bulk with gapless
states at their surfaces. This talk introduces "higher-order
topological insulators", which are crystalline insulators with a
gapped bulk and gapped crystalline boundaries, but topologically
protected gapless states at corners or at edges of the crystal. I'll
show that such "higher-order boundary states" are a generic boundary
manifestation of the nontrivial bulk topology, if the bulk topology
relies on a crystalline symmetry for its protection. <br>
<br>
Ссылка для участия в коллоквиуме - <a class=""
href="http://bbb2.itp.ac.ru/b/a-o-ytc-2k3">http://bbb2.itp.ac.ru/b/a-o-ytc-2k3</a>
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