In this Perspective article we review retrospectively the streamline of our work on iron-based superconductors, and reflect on the mechanism of Cooper pairing in conventional and unconventional, such as iron-based sup...In this Perspective article we review retrospectively the streamline of our work on iron-based superconductors, and reflect on the mechanism of Cooper pairing in conventional and unconventional, such as iron-based superconductors. The main theme of this review is the concept of effective interaction and renormalization group.展开更多
By following the Foldy-Wouthuysen(FW)transformation of the Dirac equation,we derive the exact analytic expression up to the 1/M4 order for general cases in the covariant density functional theory.The results are compa...By following the Foldy-Wouthuysen(FW)transformation of the Dirac equation,we derive the exact analytic expression up to the 1/M4 order for general cases in the covariant density functional theory.The results are compared with the corresponding ones derived from another novel non-relativistic expansion method,the similarity renormalization group(SRG).Based on this comparison,the origin of the difference between the results obtained with the FW transformation and the SRG method is explored.展开更多
文摘In this Perspective article we review retrospectively the streamline of our work on iron-based superconductors, and reflect on the mechanism of Cooper pairing in conventional and unconventional, such as iron-based superconductors. The main theme of this review is the concept of effective interaction and renormalization group.
基金Partially supported by the JSPS Grant-in-Aid for Early-Career Scientists(18K13549)the JSPS-NSFC Bilateral Program for Joint Research Project on Nuclear mass and life for unravelling mysteries of the r-processRIKEN Pioneering Project:Evolution of Matter in the Universe
文摘By following the Foldy-Wouthuysen(FW)transformation of the Dirac equation,we derive the exact analytic expression up to the 1/M4 order for general cases in the covariant density functional theory.The results are compared with the corresponding ones derived from another novel non-relativistic expansion method,the similarity renormalization group(SRG).Based on this comparison,the origin of the difference between the results obtained with the FW transformation and the SRG method is explored.
