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Shear-Induced Spin Polarization in Heavy-Ion Collisions

文献类型：期刊论文

作者Fu, Baochi2,3,4; Liu, Shuai Y. F.5; Pang, Longgang6,7; Song, Huichao2,3,4,8; Yin, Yi1,5
刊名PHYSICAL REVIEW LETTERS
出版日期2021-09-30
卷号127期号:14页码:6
ISSN号0031-9007
DOI10.1103/PhysRevLett.127.142301
通讯作者Fu, Baochi(lshphy@gmail.com)
英文摘要We study the spin polarization generated by the hydrodynamic gradients. In addition to the widely studied thermal vorticity effects, we identify an undiscovered contribution from the fluid shear. This shear-induced polarization (SIP) can be viewed as the fluid analog of strain-induced polarization observed in elastic and nematic materials. We obtain the explicit expression for SIP using the quantum kinetic equation and linear response theory. Based on a realistic hydrodynamic model, we compute the differential spin polarization along both the beam direction (z) over cap and the out-plane direction (y) over cap in noncentral heavy-ion collisions at root s(NN) = 200 GeV, including both SIP and thermal vorticity effects. We find that SIP contribution always shows the same azimuthal angle dependence as experimental data and competes with thermal vorticity effects. In the scenario that Lambda inherits and memorizes the spin polarization of a strange quark, SIP wins the competition, and the resulting azimuthal angle dependent spin polarization P (y) and P- z agree qualitatively with the experimental data.
WOS关键词HYPERONS
资助项目NSFC[12075007] ; NSFC[11675004] ; NSFC[11861131009] ; NSFC[12075098] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB34000000]
WOS研究方向Physics
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000704694100004
资助机构NSFC ; Strategic Priority Research Program of Chinese Academy of Sciences
源URL[http://119.78.100.186/handle/113462/136189]  
专题中国科学院近代物理研究所
通讯作者Fu, Baochi
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Peking Univ, Dept Phys, Beijing 100871, Peoples R China
3.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
4.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
5.Chinese Acad Sci, Quark Matter Res Ctr, Inst Modern Phys, Lanzhou 730000, Peoples R China
6.Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China
7.Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China
8.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Fu, Baochi,Liu, Shuai Y. F.,Pang, Longgang,et al. Shear-Induced Spin Polarization in Heavy-Ion Collisions[J]. PHYSICAL REVIEW LETTERS,2021,127(14):6.
APA Fu, Baochi,Liu, Shuai Y. F.,Pang, Longgang,Song, Huichao,&Yin, Yi.(2021).Shear-Induced Spin Polarization in Heavy-Ion Collisions.PHYSICAL REVIEW LETTERS,127(14),6.
MLA Fu, Baochi,et al."Shear-Induced Spin Polarization in Heavy-Ion Collisions".PHYSICAL REVIEW LETTERS 127.14(2021):6.

入库方式： OAI收割

来源：近代物理研究所

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