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</o:shapelayout></xml><![endif]--></head><body link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><a name="_Hlk20313133"><span lang=SL>Vabimo vas na 7. predavanje iz sklopa "Kolokviji na IJS" v letu 2019/20, ki bo <strong><span style='color:red'>v sredo, 29. januarja 2019, ob 13. uri </span></strong><span style='color:red'>v Veliki predavalnici Instituta »Jožef Stefan«</span> na Jamovi cesti 39 v Ljubljani. Napovednik predavanja najdete tudi na naslovu </span></a><a href="http://www.ijs.si/ijsw/Koledar_prireditev"><span style='mso-bookmark:_Hlk20313133'><span lang=SL>http://www.ijs.si/ijsw/Koledar_prireditev</span></span><span style='mso-bookmark:_Hlk20313133'></span></a><span style='mso-bookmark:_Hlk20313133'><span lang=SL>, posnetke preteklih predavanj<span style='color:blue'> </span>pa na </span></span><a href="http://videolectures.net/kolokviji_ijs"><span style='mso-bookmark:_Hlk20313133'><span lang=SL>http://videolectures.net/kolokviji_ijs</span></span><span style='mso-bookmark:_Hlk20313133'></span></a><span style='mso-bookmark:_Hlk20313133'><span lang=SL>. <o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br><br><o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><b><span lang=EN-US>prof. dr. Nicola Spaldin<o:p></o:p></span></b></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><i><span lang=EN-US>ETH Zurich, Zurich, Švica <o:p></o:p></span></i></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><i><span lang=EN-US><o:p> </o:p></span></i></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'><span style='mso-bookmark:_Hlk20313133'><b><span lang=SL style='font-size:14.0pt'>Od materialov do kozmologije: Raziskovati zgodnje vesolje z mikroskopom<o:p></o:p></span></b></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'><span style='mso-bookmark:_Hlk20313133'><span lang=SL>Razkrivanje obnašanja zgodnjega vesolja kmalu po Velikem poku je vznemirljivo temeljno vprašanje, ki je izjemno zahtevno zaradi nepremostljivih težav, povezanih s rekonstrukcijo Velikega poka v laboratoriju. Ena od poti do odgovora – ki leži na križišču kozmologije in vede o materialih – se opira na laboratorijske materiale, s katerimi bi preskusili zakone nastanka defektov v zgodnjem vesolju, kakršne so kozmične strune. V predavanju bomo pokazali, da je heksagonalni itrijev manganit – priljubljeni multiferoični material, v katerem koeksistirajo magnetni, feroelektrični in struktrurni fazni prehodi – generira kristalografski ekvivalent kozmičnih strun. Opisali bomo, kako je mogoče s preprosto rešitvijo Schrödingerjeve enačbe za itrijev manganit identificirati in izmeriti pomembne značilnosti obnašanja tega materiala, ter predstavili eksperimentalne rezultate, ki so izgleda prva nedvoumna demonstracija pričakovanih kozmoloških skalirnih zakonov v dejanskem materialu. Zaključili bomo s prošnjo za pomoč pri slikanju multiferoičnih “kozmičnih strun” in predstavili nekaj zelo nedavnih podatkov, ki nakazujejo, da so stvari manj nedvoumne, kot se zdi.<o:p></o:p></span></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'><span style='mso-bookmark:_Hlk20313133'><span lang=SL>Predavanje bo v angleščini.<o:p></o:p></span></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span style='mso-bookmark:_Hlk20313133'><strong><span lang=SL style='color:red'>Lepo vabljeni!<o:p></o:p></span></strong></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL> ********************<o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL><o:p> </o:p></span></span></p><span lang=SL style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'><br clear=all style='page-break-before:always'></span><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL style='color:black'>We invite you to the 7th Institute colloquium in the academic year 2019/20. The colloquium will be held </span><b><span lang=SL style='color:red'>on Wednesday January 29, 2019 at 1 PM</span></b><span lang=SL style='color:red'> in <b>the main Institute lecture hall</b></span><span lang=SL style='color:black'>, Jamova 39, Ljubljana. To read the abstract click </span></span><a href="http://www.ijs.si/ijsw/Koledar_prireditev"><span style='mso-bookmark:_Hlk20313133'><span lang=SL>http://www.ijs.si/ijsw/Koledar_prireditev</span></span><span style='mso-bookmark:_Hlk20313133'></span></a><span style='mso-bookmark:_Hlk20313133'><span lang=SL style='color:#1F497D'>. </span><span lang=SL style='color:black'>Past colloquia are posted on</span><span lang=SL style='color:#1F497D'> </span></span><a href="http://videolectures.net/kolokviji_ijs"><span style='mso-bookmark:_Hlk20313133'><span lang=SL>http://videolectures.net/kolokviji_ijs</span></span><span style='mso-bookmark:_Hlk20313133'></span></a><span style='mso-bookmark:_Hlk20313133'><span lang=SL style='color:#1F497D'>.<o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL style='color:#1F497D'><o:p> </o:p></span></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='mso-bookmark:_Hlk20313133'><span lang=SL>********************************************<b><o:p></o:p></b></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><b><span lang=EN-US>prof. dr. Nicola Spaldin<o:p></o:p></span></b></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><i><span lang=EN-US>ETH Zurich, Zurich, Switzerland<o:p></o:p></span></i></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><b><i><span lang=EN-US><o:p> </o:p></span></i></b></span></p><p class=Default><span style='mso-bookmark:_Hlk20313133'><b><span lang=SL style='font-size:14.0pt;font-family:"Times New Roman",serif;color:#202020;mso-fareast-language:SL'>From materials to cosmology: Studying the early universe under the microscope<o:p></o:p></span></b></span></p><p class=Default><span style='mso-bookmark:_Hlk20313133'><span lang=EN-US style='font-family:"Times New Roman",serif'><o:p> </o:p></span></span></p><p class=MsoNormal style='text-align:justify'><span style='mso-bookmark:_Hlk20313133'><span lang=EN-US style='font-family:"Cambria",serif;color:black;mso-fareast-language:EN-US'>Uncovering the behavior of the early universe just after the Big Bang is an intriguing fundamental activity that is extraordinarily difficult because of insurmountable issues associated with replaying the Big Bang in the laboratory. One route to the answer – which lies at the intersection between cosmology and materials science – is to use laboratory materials to test the laws proposed for the formation of defects such as cosmic strings in the early universe. Here we will show that a popular multiferroic material, hexagonal yttrium manganite – with its coexisting magnetic, ferroelectric and structural phase transitions – generates the crystallographic equivalent of cosmic strings. We will describe how straightforward solution of the Schrödinger equation for yttrium manganite allows the important features of its behavior to be identified and quantified, and present experimental results of what seem to be the first unambiguous demonstration of the expected cosmological scaling laws in a real material. We will end with a plea for help with imaging the multiferroic “cosmic strings”, and show some very recent data suggesting that things might be less unambiguous than they seem.<o:p></o:p></span></span></p><p class=MsoNormal style='text-align:justify'><span style='mso-bookmark:_Hlk20313133'><span lang=SL><o:p> </o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL>Cordially invited!</span></span><span lang=SL><o:p></o:p></span></p><p class=MsoNormal><span lang=SL><o:p> </o:p></span></p><p class=MsoNormal><span lang=SL><o:p> </o:p></span></p></div></body></html>