题目:Einstein meets Anderson: Emergent space-time meets emergent phenomena in a material

报告人：叶锦武 Jinwu Ye（Mississippi State university/Great bay university）

时间：2023年5月6日（周六），下午15:30

地点：紫金港校区西区海纳苑8幢319教室

摘要:A. Einstein's special relativity says that any physics law in a vacuum takes identical form in any two inertial frames.On the opposite direction, P.W. Anderson's  More is different  says that various  macroscopic quantum phenomena emerge in a material which contains enormous number of interacting particles. In contrast to the relativistic quantum field theory, there is always a reservoir which can exchange energy and the particles with a material. It remains an outstanding problem to apply Einstein's special relativity to  Anderson's  More is different .Here we address this outstanding problem and find that the combination leads to many new effects.We demonstrate these new effects by studying one of the simplest quantum phase transitions (QPT):Superfluid (SF)-Mott transitions of interacting bosons in a square lattice  in a sample moving with a constant velocity. It is the moving which mixes the space and time, then leads to a emergent space-time near the QPT. It is the existence of reservoir which makes crucial differences between a moving sample and a moving inertial frame. We also stress the important roles played by the underlying lattice. We discuss the experimental detection of these dramatic new effects in some materials or cold atoms loaded in an optical lattice.

个人简介：Prof. Ye  received his Ph.D. from Yale University. Now he is a Professor at Mississippi state university.He is a long term visitor at the newly found Great Bay university in Dongguan, Guangdong, China.He is a condensed matter theorist  working on the interdisciplinary field of  condensed matter, quantum optics, cold atoms,non-relativistic quantum field theory, Turbulence and conformal field theory.Recently, he has been particularly interested to explore possible deep connections among quantum/topological phases, Sachdev-Ye-Kitaev models and quantum black holes.

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