题     目：Conformal symmetry and planar nontopological solitons

主讲人：Emin Nugaev 副研究员

单    位：俄罗斯科学院核研究所

时    间：2026年2月11日 18:00

ZOOM:   713 668 5659

ID密码：123456

摘     要：We will consider the non-relativistic limit for scalar field models with a certain type of              attractive self-interactions in (1+1) and (2+1)dimensions. A distinctive feature of these theories is their invariance under space-time transformations of the unbroken Schrodinger group,which includes the Galilean group with scale invariance and special conformal symmetry. Remarkably, non-topological   solitons in non-relativistic conformal theories exhibit enhanced stability with respect to linear             perturbations. Their spectrum consists only of zero modes. Relativistic corrections are considered as a mechanism for weakly violating conformal symmetry, leading to the appearance of decay/                  oscillating modes. A demonstration will be given of how these modes vanish when conformal                symmetry is restored in the non-relativistic limit. We will also discuss the planar model, generalized   by additional interaction with massive gauge field in Chern-Simons theory.

简 介：Emin Nugaev is a researcher at the Institute for Nuclear Research(INR), Russian Academy of      Sciences (RAS), in Moscow, Russia. Nugaev is an expert on Q-balls and quantum electrodynamics.      Nugaev has published 30 papers in JHEP, Phys.Rev.D, Phys.Lett.B, Eur.Phys.Lett., Eur.Phys.J.C, Mod.  Phys.Lett.A, Commun.Nonlinear Sci.Numer.Simul. with over 500 citations in total.