Photon Emissions from a Spinor Bose–Einstein Condensate of Positroniums  

作　　者：郑晨 张芃 易俗 

机构地区：[1]CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [2]School of Physics, University of Chinese Academy of Sciences [3]Department of Physics, Renmin University of China

出　　处：《Communications in Theoretical Physics》2017年第8期236-244,共9页理论物理通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant Nos.11434011,11674334,11421063,and 11674393;National Key Basic Research Special Foundation of China under Grant No.2012CB922104;the Fundamental Research Funds for the Central Universities;the Research Funds of Renmin University of China under Grant Nos.16XNLQ03 and 17XNH054

摘　　要：We investigate the quantum dynamics of the decay of a multiple-component positronium condensate into pairs of photons. A positronium atom has four internal spin states which are interconvertible through s-wave interactions. The quantum fields of all spin states of positroniums and photons are simulated from first principle in quasi-one-dimensional system using the truncated Wigner method. This method warrants us a full treatment of the depletion of positronium fields and the spin mixing induced by s-wave collisions between positronium atoms. Particularly,it yields the momentum spectrum of the emitted photons and the photon-photon correlations.

关 键 词：POSITRONIUM spinor Bose Einstein condensate photon emission 

分 类 号：O469[理学—凝聚态物理]