Effects of higher-order exchange interactions in classical XY model

A standard two-dimensional (2D) XY model is well known to show a topological Berezinskii-Kosterlitz-Thouless (BKT) phase transition with the quasi-long-range-order (QLRO) BKT phase characterized by an algebraically decaying correlation function. It will be shown by spin-wave theory and Monte Carlo simulations that including higher-order terms can lead to dramatic changes in its critical behavior, including phase transition order or universality class and even the phase…

Veda a technika na Slovensku

Vážená pani / Vážený pán, dovoľujeme si Vás pozvať na Národnú konferenciu Veda a technika na Slovensku a v medzinárodnom výskumnom a vzdelávacom priestore Smerovanie ku kvalite a vedomostiam ktorá sa bude konať dňa 8. novembra 2018 v Incheba Expo Bratislava, Hala B0, Bratislava. Konferencia je organizovaná Ministerstvom školstva, vedy, výskumu a športu SR a je jedným z kľúčových podujatí realizovaných v rámci Týždňa vedy a techniky na Slovensku 2018.…

50th IFF Spring School

Scattering! Soft, Functional and Quantum Materials 11 – 22 March 2019 in Jülich, Germany The topics for this year’s School are: Scattering Theory Structure, Dynamics & Excitations Neutron- & Synchrotron Radiation Sources: X-FEL, ESS, HBS Experimental Techniques Topical Applications in Soft Matter, Life Science, Materials Sciences, Quantum- and Nano-Material Complementary Techniques: Imaging, Microscopies For more information see here.