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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Vabimo vas na 13. predavanje iz sklopa "Kolokviji na IJS" v letu 2011/12, ki bo <strong><span style='color:red'>v ponedeljek, 19. marca 2012, 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 <a href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</a>, posnetke preteklih predavanj<span style='color:blue'> </span>pa na <a href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</a>. <o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<b><span style='mso-fareast-language:ZH-CN'><o:p></o:p></span></b></p><p class=MsoNormal><b><span style='mso-fareast-language:ZH-CN'>Prof. dr. Rudi GRIMM<o:p></o:p></span></b></p><p class=MsoNormal><i><span style='mso-fareast-language:ZH-CN'>Univerza v Innsbrucku, Innsbruck, Avstrija<o:p></o:p></span></i></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";mso-fareast-language:SL'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:14.0pt'>ULTRAHLADNI ATOMI: MODELSKI SISTEMI ZA KVANTNE SNOVI<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt'><o:p> </o:p></span></b></p><p class=MsoNormal style='text-align:justify'>Vzorci atomov s temperaturo nekaj nanokelvinov, pripravljeni s sodobnimi metodami laserskega in izparilnega hlajenja, dajejo enkratno priložnost za raziskavo mnogih pojavov v kompleksnih kvantnih sistemih. Ključne prostostne stopnje in parametre lahko nadziramo na način, ki ga v tradicionalnih kvantnih večdelčnih sistemih ni mogoče doseči. Bozonske in fermionske atome uporabljamo za ustvarjanje Bose-Einsteinovih kondenzatov, degeneriranih Fermijevih plinov in celo kvantno degeneriranih mešanic. Z optičnimi pastmi lahko izdelamo makroskopske pasti, umetne kristale (t. i. optične mreže) in nizkodimenzionalna okolja. Interakcijo med delci lahko spreminjamo z magnetnim poljem z resonančnim pojavom, znanega kot Feshbachova resonanca. S tem bogatim naborom orodij je mogoče eksperimentalno raziskovati mnoge zanimive modelske sisteme, tesno povezane z različnimi vejami fizike. Po splošnem uvodu v področje bo predstavljenih nekaj primerov tovrstnih študij v Innsbrucku, vključno z novimi rezultati močno interagirajočih Fermijevih plinov in malodelčnih stanj Efimova v Bosejevih plinih.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><strong><span style='color:red'>Lepo vabljeni!</span></strong><strong><span style='font-weight:normal'><o:p></o:p></span></strong></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal align=center style='text-align:center'>*****<o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'><o:p> </o:p></p><p class=MsoNormal style='text-align:justify'>We would like to invite you to 13th lecture of the "Kolokvij na IJS" in the school year 2011/12. The lecture will be held <b>on Monday, March 19, 2012, at 1 pm</b> at the <b>JSI main lecture hall</b>, Jamova 39, Ljubljana. The abstract of the lecture can be found on website: <span style='font-size:10.0pt'><a href="http://www.ijs.si/ijsw/Koledar_prireditev"><span style='font-size:12.0pt'>http://www.ijs.si/ijsw/Koledar_prireditev</span></a></span>, the previous recorded lectures can be found on website: <span style='font-size:10.0pt'><a href="http://videolectures.net/kolokviji_ijs"><span style='font-size:12.0pt'>http://videolectures.net/kolokviji_ijs</span></a></span>.<span style='font-size:10.0pt'> </span><o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>********************************************<b><span lang=SL style='mso-fareast-language:ZH-CN'><o:p></o:p></span></b></p><p class=MsoNormal><b><span style='mso-fareast-language:ZH-CN'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='mso-fareast-language:ZH-CN'>Prof. dr. Rudi GRIMM<o:p></o:p></span></b></p><p class=MsoNormal><i><span style='mso-fareast-language:ZH-CN'>University of Innsbruck, Innsbruck, Austria <o:p></o:p></span></i></p><p class=MsoNormal><b><span style='font-size:16.0pt;mso-fareast-language:SL'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:16.0pt'>Ultracold Atoms: Model Kits for Quantum Matter<o:p></o:p></span></b></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Atomic samples with temperatures in the nanokelvin range, prepared by advanced methods of laser and evaporative cooling, offer unique opportunities to study a large variety of phenomena in complex quantum systems. The important degrees of freedom and parameters can be controlled in a way, not accessible to traditional quantum many-body systems. Both bosonic and fermionic atoms are available to create Bose-Einstein condensates, degenerate Fermi gases, and even quantum-degenerate mixtures. Optical traps allow the experimentalists to realize macroscopic traps, artificial crystals (“optical lattices”), and low-dimensional environments. The interaction can be magnetically tuned exploiting a resonance phenomenon, called “Feshbach resonance”. Based on this rich tool-box, many intriguing model systems can be experimentally studied with strong connections to different branches of physics. After a general introduction into the field, I will present a few examples based on research in Innsbruck, including new developments on strongly interacting Fermi gases and few-body “Efimov” states in Bose gases.<o:p></o:p></p><p class=MsoNormal><b><span style='font-size:14.0pt'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt'>We look forward to meeting you at the “Kolokvij na IJS”!<o:p></o:p></span></b></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></body></html>