学科分类
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2 个结果
  • 简介:<正>AneffectiverelativisticcontinuummassiveProcaLagrangianactionisusedtoaccountfortheLorentzvectorcondensationeffectsontheequationofstateofthestronglyinteractingfermionssystem.TheinteriorquantumfluctuationeffectsareincorporatedasanexternalfieldapproximationindirectlythroughafictivegeneralizedThomsonProblemcountertermbackground.Thegeneralanalyticalformulasforthed-dimensionalthermodynamicsaregivenneartheunitarylimitregion,Inthenon-relativisticlimitford=3,theuniversaldimensionlesscoefficientε=4/9andenergygap△/ε_f=5/18arereasonablyconsistentwiththeexistingtheoreticalandexperimentalresults.Intheunitarylimitford=2andT=0,theuniversalcoefficientcanevenapproachtheextremeoccasionξ=0correspondingtotheinfiniteeffectivefermionmassm~*=∞,whichcanbemappedtothestronglycoupledtwo-dimensionalelectronsandisquitesimilartothethree-dimensionalBose-Einsteincondensationofidealbosongas.Instead,ford=1,theuniversalcoefficientξisnegative,implyingthenon-existenceofphasetransitionfromsuperfluiditytonormalstate.ThesolutionsmanifestthequantumIsinguniversalclasscharacteristicofthestronglycoupledunitaryfermionsgas.

  • 标签: UNITARY FERMIONS THERMODYNAMICS BEC-BCS CROSSOVER STATISTICAL
  • 简介:我们建议一个确切可解决的方法学习原子Bose爱因斯坦冷凝物的协调two-colourphotoassociation,由线性化双线性的atom-moleculecoupling,它允许我们方便地探查量动力学和准备原子冷凝物的不同起始的状态的system.By的统计,我们能很观察differentquantum由确切计算压榨照的相关andmode的功能的系统的统计性质。

  • 标签: 玻色-爱因斯坦凝聚态 微粒子 精确溶解 原子-分子耦合