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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Hopf and Skyrme Solitons - Ivan Smalyukh (Universi
ty of Colorado)
DTSTART;TZID=Europe/London:20190529T160000
DTEND;TZID=Europe/London:20190529T170000
UID:TALK125788AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/125788
DESCRIPTION:Topologically nontrivial fields and vortices
frequently arise in classical and quantum field t
heories\, plasmas\, optics\, cosmology and atomic
systems. On the other hand\, condensed matter syst
ems\, such as colloids\, magnets and liquid crysta
ls\, offer the complexity in degrees of freedom an
d symmetries that allow for probing topologically
analogous phenomena on experimentally accessible s
cales. In my lecture\, I will discuss Hopf and Sky
rme solitons\, continuous but topologically nontri
vial knotted field configurations localized in thr
ee or two spatial dimensions. They emerge as stati
c structures within the chiral condensed matter sy
stems [1-4] and self-assemble into crystals\, but
can also exhibit emergent collective motions when
powered by external stimuli [5]. I will show how s
uch a synergistic interplay of topology and self-a
ssembly paradigms can emerge as an exciting scient
ific frontier of condensed matter.
1. P. J. Ackerman and I. I. Smalyukh. Nature Mater 16\, 426-432 (2017).
2. J.-S.B. Tai\, P.J. A
ckerman and I.I. Smalyukh. PNAS. 115
\, 921-926 (2018).
3. P. J. Ackerman and I. I. Smalyukh. Phys Rev
X 7\, 011006 (2017).
4. J.-S. B. Tai and I. I. Smalyukh.
Phys Rev Lett 121\, 187201 (2018).
span> 5. H.R.O. Sohn\, C.D. Liu and I.I. Smalyukh
. (2019).
LOCATION:Seminar Room 2\, Newton Institute
CONTACT:INI IT
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