學(xué)術(shù)報(bào)告
報(bào)告題目：Solid physics via a gravitational lens
報(bào)告人：大連理工大學(xué)李偉佳副教授
報(bào)告時(shí)間：2024年10月11日（周五）16:30-18:00
報(bào)告地點(diǎn)：知行樓B301
內(nèi)容簡(jiǎn)介：Holographic axion models are a class of bottom-up models characterized by one or several sets of shift-symmetric axion fields, whose profiles are taken to be linear in the spatial coordinates. These simple models can implement the breaking of translational invariance in the dual field theory while retaining the homogeneity of the background geometry, thus allowing for controllable and fast computations. Therefore, they have very broad applications in gauge/gravity duality.
In this talk, I will present the new progress of the axion models for modeling the elastic properties and collective excitations of solid systems at finite temperatures. Especially, I will show how these models can provide insights into the mechanical failure of solids under shear strains. In addition, I will also discuss the physical nature of the collective modes and propose an extension of the model by incorporating additional sets of axions to describe superlattice systems.
個(gè)人簡(jiǎn)介：李偉佳,，大連理工大學(xué)物理學(xué)院副教授,、博士生導(dǎo)師,。2014年北京師范大學(xué)理論物理專業(yè)博士,。2012-2014年公派美國(guó)麻省理工學(xué)院和哈佛大學(xué)聯(lián)合培養(yǎng),。2014-2016年希臘克里特大學(xué)博士后,。2016年起在大連理工大學(xué)物理學(xué)院任教。研究涉及廣義相對(duì)論,、量子場(chǎng)論,、規(guī)范/引力對(duì)偶以及黑洞物理等交叉領(lǐng)域。近期的主要興趣點(diǎn)是通過(guò)規(guī)范/引力對(duì)偶,、量子場(chǎng)論以及流體力學(xué)等跨領(lǐng)域理論工具探索強(qiáng)關(guān)聯(lián)凝聚態(tài),、低能QCD等新奇量子多體系統(tǒng)的普適物理性質(zhì)和行為。
歡迎廣大老師和同學(xué)參加,！
物理與電子科學(xué)學(xué)院
2024年10月8日