论文标题
研究的研究和X玻色子方法的近感和高温极限
Study of the Kondo and high-temperature limits of the slave-boson and X-boson methods
论文作者
论文摘要
在这封信中，我们研究了周期性的安德森模型，同时在平均场近似中使用奴隶玻璃和X-boson方法。当颗粒总数NT = NF + NC的总职业数量保持恒定时，我们研究了从中等温度下的从玻色子的分解，其中NF和NC分别是局部和传导电子的职业数量，我们表明，从属= NC = NC = NC = NT /2。我们还比较了近托极限中两种方法的结果，我们表明，在低温下，X-boson表现出从Kondo重型费米昂（K-HF）制度到局部力矩磁性状态（LMM）的相变。
In this Letter we study the periodic Anderson model, employing both the slave-boson and the X-boson approaches in the mean field approximation. We investigate the breakdown of the slave-boson at intermediate temperatures when the total occupation number of particles Nt = Nf + Nc is keep constant, where Nf and Nc are respectively the occupation numbers of the localized and conduction electrons, and we show that the high-temperature limit of the slave-boson is Nf = Nc = Nt /2. We also compare the results of the two approaches in the Kondo limit and we show that at low-temperatures the X-boson exhibits a phase transition, from the Kondo heavy fermion (K-HF) regime to a local moment magnetic regime (LMM).
