Reviewing all the basic research performed at the Landau Institute for Theoretical Physics, Russian Academy of Sciences, that have made a significant contribution to physics is an unrealistic task. I, therefore, only focus on those studies that have directly affected the author's explorations during 50 years (1968—2018). I.M. Khalatnikov created a unique institution that brought together virtually all areas of theoretical physics of importance thus opening vast opportunities for scientific collaboration. The Landau Institute's multidisciplinary environment was a significant driver of research.

Keywords: topological defects, topological matter, Majorana and Weyl fermions, general relativity and cosmology PACS: 01.65.+g, 02.40.−k, 67.30.−n (all) DOI: 10.3367/UFNe.2019.04.038560 URL: https://ufn.ru/en/articles/2019/10/e/ 000508386600005 2-s2.0-85080920868 2019PhyU...62.1031V Citation: Volovik G E "Fifty years of research at the Landau Institute for Theoretical Physics (on the 100th anniversary of the birth of I.M. Khalatnikov)" Phys. Usp. 62 1031–1045 (2019) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Received: 5th, April 2019, accepted: 17th, April 2019 Оригинал: Воловик Г Е «50 лет работы в Институте теоретической физики им. Л.Д. Ландау (к 100-летию со дня рождения И.М. Халатникова)» УФН 189 1104–1120 (2019); DOI: 10.3367/UFNr.2019.04.038560