Abstract
Dirac's method for constraints is used for solving the problem of exclusion of double occupancy for Correlated Electrons. The constraints are enforced by the pair operator Q ( x → ) = ψ ↓ ( x → ) ψ ↑ ( x → ) which annihilates the ground state | Ψ 0 〉 . Away from half fillings the operator Q ( x → ) is replaced by a set of first class non-Abelian constraints Q α ( − ) ( x → ) restricted to negative energies. The propagator for a single hole away from half fillings is determined by modified measure which is a function of the time duration of the hole propagator. As a result: (a) The imaginary part of the self energy is linear in the frequency. At large hole concentrations a Fermi Liquid self energy is obtained. (b) For the superconducting state the constraints generate an asymmetric spectrum excitations between electrons and holes giving rise to an asymmetry tunneling density of states.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
