{"id":6232,"date":"2026-10-19T09:48:39","date_gmt":"2026-10-19T09:48:39","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-edlisfraedi-valerii-kozin\/"},"modified":"2026-10-19T09:48:39","modified_gmt":"2026-10-19T09:48:39","slug":"doktorsvorn-i-edlisfraedi-valerii-kozin","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-edlisfraedi-valerii-kozin\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed e\u00f0lisfr\u00e6\u00f0i – Valerii Kozin"},"content":{"rendered":"
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Streymi:\u00a0https:\/\/livestream.com\/hi\/doktorsvornvaleriikozin<\/a><\/p>\n

Doktorsefni:<\/strong>\u00a0Valerii Kozin<\/p>\n

Heiti ritger\u00f0ar:<\/strong>\u00a0Grannfr\u00e6\u00f0i og samhverfurof \u00fear sem sterk v\u00edxlverkun lj\u00f3ss og efnis r\u00edkir (Topology and symmetry-breaking in the strong light-matter coupling regime)<\/p>\n

Andm\u00e6lendur:<\/strong>
Dr. Iacopo Carusotto, ranns\u00f3knama\u00f0ur vi\u00f0 INO-CNR BEC Center \u00ed Trento, \u00cdtal\u00edu
Dr.\u00a0 Leonid Golub, yfirma\u00f0ur ranns\u00f3kna vi\u00f0 Ioffe-stofnunina \u00ed Sankti P\u00e9tursborg, R\u00fasslandi<\/p>\n

Lei\u00f0beinandi:<\/strong>\u00a0Dr. Ivan Shelykh, pr\u00f3fessor vi\u00f0 Raunv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n

Einnig \u00ed doktorsnefnd:<\/strong>
Dr. Ivan V. Iorsh, d\u00f3sent vi\u00f0 deild nan\u00f3lj\u00f3sfr\u00e6\u00f0i og metaefna, ITMO-h\u00e1sk\u00f3la \u00ed Sankti P\u00e9tursborg, R\u00fasslandi.
Dr. Hafli\u00f0i P\u00e9tur G\u00edslason, pr\u00f3fessor vi\u00f0 Raunv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands
Dr. Vi\u00f0ar Gu\u00f0mundsson, pr\u00f3fessor vi\u00f0 Raunv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n

Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. Einar \u00d6rn Sveinbj\u00f6rnsson, pr\u00f3fessor og deildarforseti Raunv\u00edsindadeildar H\u00e1sk\u00f3la \u00cdslands<\/p>\n

\u00c1grip<\/strong><\/p>\n

E\u00f0lisfr\u00e6\u00f0i v\u00edxlverkunar lj\u00f3ss og efnis \u00fer\u00f3ast hratt sem ranns\u00f3knarsvi\u00f0\u00a0 \u00e1 m\u00f6rkum \u00fe\u00e9ttefnisfr\u00e6\u00f0i og skammtalj\u00f3sfr\u00e6\u00f0i. Heg\u00f0un e\u00f0lisfr\u00e6\u00f0ikerfa \u00fear sem \u00feessi v\u00edxlverkun \u00e1 vi\u00f0 er mj\u00f6g mismunandi og fer eftir styrkleika \u00feess.<\/p>\n

\u00cd \u00feessari ritger\u00f0 er a\u00f0allega sko\u00f0a\u00f0 svi\u00f0 ofursterkrar v\u00edxlverkunar lj\u00f3ss og efnis \u00e1n \u00feess a\u00f0 einskor\u00f0a sig vi\u00f0 \u00fea\u00f0.<\/p>\n

Svi\u00f0 ofursterkrar v\u00edxlverkunar lj\u00f3ss og efnis gefur almennt til kynna notkun \u00e1 \u00fdmsum l\u00e1gv\u00eddda h\u00e1lflei\u00f0arakerfum, \u00e1geislun me\u00f0 sterku leysissvi\u00f0i e\u00f0a kaldar frumeindir \u00ed gildru n\u00e1l\u00e6gt bylgjulei\u00f0urum.<\/p>\n

Ritger\u00f0 \u00feessi fjallar um ranns\u00f3knir okkar \u00e1 mismunandi skammtakerfum og fyrirb\u00e6rum \u00ed svi\u00f0i ofursterkrar k\u00faplunar, svo sem:<\/p>\n

1) grenndareinangrara bygg\u00f0a \u00e1 tv\u00edv\u00ed\u00f0ri grind af \u00e1geislu\u00f0um skammtahringjum,<\/p>\n

2) n\u00fdja tegund Z grenndareinangrara bygg\u00f0a \u00e1 lj\u00f3sskauteindum,<\/p>\n

3) Bose-Einstein \u00fe\u00e9ttingu \u00ed hallandi lj\u00f3sskauteindahring,<\/p>\n

4) skammtalj\u00f3saflfr\u00e6\u00f0i me\u00f0 hendnum bylgjulei\u00f0ara,<\/p>\n

5) n\u00fdja tegund Hallhrifa fyrir samsettar eindir (\u00f6rveindir), sem nefnd er afbrig\u00f0ileg Hallhrif \u00f6rveinda,<\/p>\n

6) hli\u00f0arm\u00e1lms d\u00edkalkogen\u00ed\u00f0a (TMD) lj\u00f3sskauteindir \u00ed n\u00e6rveru frj\u00e1lsra rafbera, og fleiri tengd fyrirb\u00e6ri.<\/p>\n

Um doktorsefni\u00f0<\/strong><\/p>\n

Valerii Kozin f\u00e6ddist \u00ed Almaty \u00ed Kasakstan \u00e1ri\u00f0 1992. Hann flutti til Sankti P\u00e9tursborgar \u00ed R\u00fasslandi 14 \u00e1ra gamall, \u00fear sem hann gekk \u00ed Menntask\u00f3la e\u00f0lis- og t\u00e6knifr\u00e6\u00f0i. \u00c1ri\u00f0 2010 kl\u00e1ra\u00f0i Valerii framhaldssk\u00f3la og h\u00f3f n\u00e1m vi\u00f0 Fj\u00f6lt\u00e6knih\u00e1sk\u00f3la P\u00e9turs mikla \u00ed Sankti P\u00e9tursborg og \u00fatskrifa\u00f0ist \u00e1ri\u00f0 2015 me\u00f0 BSc-gr\u00e1\u00f0u \u00ed e\u00f0lisfr\u00e6\u00f0i. \u00c1ri\u00f0 2015 gekk hann \u00ed Akadem\u00edska h\u00e1sk\u00f3lann \u00ed Sankti P\u00e9tursborg \u00fear sem hann lauk MSc gr\u00e1\u00f0u \u00ed e\u00f0lisfr\u00e6\u00f0i. \u00c1ri\u00f0 2017 giftist Valerii og h\u00f3f doktorsn\u00e1m \u00ed H\u00e1sk\u00f3la \u00cdslands (n\u00e1mslei\u00f0 tekin a\u00f0 hluta til vi\u00f0 ITMO-h\u00e1sk\u00f3lann \u00ed Sankti P\u00e9tursborg). \u00c1 n\u00e1msferli s\u00ednum birti Valerii 15 v\u00edsindagreinar \u00ed h\u00e1tt metnum t\u00edmaritum, \u00fear \u00e1 me\u00f0al \u00ferj\u00e1r greinar \u00ed Physical Review Letters. Valerii var virkur \u00ed menntastarfi H\u00e1sk\u00f3la \u00cdslands \u00fear sem hann kenndi d\u00e6mat\u00edma \u00ed Inngangi a\u00f0 skammtafr\u00e6\u00f0i og Kjarna- og \u00f6reindafr\u00e6\u00f0i. A\u00f0 doktorsv\u00f6rn lokinni hyggst Valerii halda \u00e1fram ranns\u00f3knum \u00ed fr\u00e6\u00f0ilegri \u00fe\u00e9ttefnisfr\u00e6\u00f0i.
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