Effective action for the Kondo lattice model. New approach for S=1/2

Details Effective action for the Kondo lattice model. New approach for S=1/2 Effective action for the Kondo lattice model. New approach for S=1/2

1998-08-17

arxiv.org/abs/cond-mat/9808177v2

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, Proceedings of SCES98/Paris; one reference added

Scientific paper

10.1016/S0921-4526(98)01171-5

In the partition function of the Kondo lattice, spin matrices are exactly replaced by bilinear combinations of Fermi operators with the purely imaginary chemical potential lambda=-i.pi.T/2 (Popov representation). This new representation of spin operators allows one to introduce new Green's functions with Matsubara frequencies 2.pi.T(n+1/4) for S=1/2. A simple temperature diagram technique is constructed with the path integral method. This technique is standard and does not contain the complicated combinatoric rules characteristic of most of the known variants of the diagram techniques for spin systems. The effective action for the almost antiferromagnetic Kondo lattice is derived.

Affiliated with

Also associated with

No associations

Rating

Effective action for the Kondo lattice model. New approach for S=1/2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Effective action for the Kondo lattice model. New approach for S=1/2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effective action for the Kondo lattice model. New approach for S=1/2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-570071