BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:CMSP News and Views Seminar Series: Seeing the Unseen: Multipole A nalysis and Emergent Phenomena in Condensed Matter DTSTART;VALUE=DATE-TIME:20260616T123000Z DTEND;VALUE=DATE-TIME:20260616T133000Z DTSTAMP;VALUE=DATE-TIME:20260524T033033Z UID:indico-event-11340@ictp.it DESCRIPTION:\n - - -\n Light refreshments will be served prior the semina r\n at 14:00 on the Leonardo Building terrace\n - - - Sayantika Bhowal\n (Indian Institute of Technology Bombay)\n \nAbstract:\n\n Understanding a nd foreseeing novel and emergent properties of condensed matter systems ha ve been of immense interest in recent times\, not only in the context of f undamental research but also for their advanced functional applications. W hile the development of density functional theory has been a breakthrough in theoretical approaches for a realistic description of solid-state mater ials\, predicting material properties still remains a challenging task. Th is is partly related to the absence of any systematic approach to account for and understand the physical properties of real systems.\n In my talk\, I will discuss the "multipole analysis" approach\, which emerges as a sys tematic and powerful method to understand a wide range of physical phenome na in condensed matter systems within a unified framework\, and consequent ly to accelerate the search for emerging phenomena in such systems. The su ccess of this approach lies in the fact that it allows a complete characte rization of the charge and magnetization densities of these systems\, whic h in turn are responsible for their emergent properties. After introducing the importance of multipole analysis\, I will provide an overview of rece nt advancements in this approach by focusing on its contributions and succ esses in addressing some fundamental problems in physics [1–3]. Finally\ , I will discuss some of our contributions to this field [4–9]\, with a focus on our recent work [9–15] on understanding and controlling non-rel ativistic spin splitting in antiferromagnets based on the multipolar frame work.\n While noticeable progress has been made so far\, there are still m any open directions to explore in the future. Through this progress\, we h ope to establish multipolar theory as a unified framework for the descript ion of condensed matter systems\, which is not only useful for predicting material properties but also provides a platform for designing novel mater ials with advanced functionalities that can be synthesized and characteriz ed experimentally.\n  References:\n [1] B. B. V. Aken et. al.\, Nature 44 9\, 702-705 (2007)\; N. A. Spaldin\, M. Fiebig\, and M. Mostovoy\, J. Phy s.: Condens. Matter 20\, 434203 (2008).\n [2] N. A. Spaldin et. al.\, Phys . Rev. B 88\, 094429 (2013)\; H. Watanabe and Y. Yanase\, Phys. Rev. B 98\ , 245129 (2018).\n [3] M.-T. Suzuki et. al.\, Phys. Rev. B 95\, 094406 (20 17) \; M. Kimata et. al.\, Nat. Comm. 12\, 5582 (2021).\n [4] S. Bhowal a nd N. A. Spaldin\, Phys. Rev. Lett. (Editors' suggestion) 128\, 227204 (20 22).\n [5] S. Bhowal and S. Satpathy\, Phys. Rev. B (Rapid Comm.) 101\, 12 1112 (2020).\n [6] S. Bhowal and G. Vignale\, Phys. Rev. B (Editors' sugge stion) 103\, 195309 (2021).\n [7] S. Bhowal\, S. P. Collins and N. A. Spal din\, Phys. Rev. Lett. 128\, 116402 (2022).\n [8] S. Bhowal and N. A. Spal din\, Phys. Rev. Research 3\, 033185 (2021).\n [9] S. Bhowal and N. A. Spa ldin\, PRX 14\, 011019 (2024).\n [10] S. Bhowal\, A. Urru\, S. F. W.\, and N. A. Spaldin\, Phys. Rev. Lett. 134\, 146703 (2025).\n [11] S. Bandyopad hyay\, S.Picozzi\, and S. Bhowal\, Phys. Rev. B 112\, 064405 (2025).\n [12 ] S. Bandyopadhyay et. al.\, PRB 112\, L100402 (2025).\n [13] A. Ray\, S. Bandyopadhyay\, S. Bhowal\, arXiv:2509.20041 (2025).\n [14] S. Bhowal and A. Bose\, arXiv: 2510.20306v1 (2025).\n [15] Muskan\, S. Bandyopadhyay\, a nd S. Bhowal\, arXiv:2602.14608 (2026).\n  \n\n \n  \n\n Zoom registrati on link:https://zoom.us/meeting/register/sL4fYHz8RuKMMGExQX3WNQ\n  \n\n// indico.ictp.it/event/11340/ LOCATION:Lagrange Lecture Hall (Leonardo Building) and via Zoom URL://indico.ictp.it/event/11340/ END:VEVENT END:VCALENDAR