3 papers
cond-mat.str-el1998
Higher Symmetries in Condensed Matter Physics
R. S. Markiewicz, M. T. Vaughn
We discuss some applications of higher symmetry groups to condensed matter systems. We give special attention to the groups SO(n) (n = 4, 5, 6, 8) in the two-dimensional Hubbard mo…
cond-mat.supr-con1998
Tunneling and Photoemission in an SO(6) Superconductor
R. S. Markiewicz, C. Kusko, M. T. Vaughn
Combining the results of tunneling, photoemission and thermodynamic studies, the pseudogap is unambiguously demonstrated to be caused by Van Hove nesting: a splitting of the densit…
cond-mat.supr-con1998
The Spectrum-Generating Algebra of the Van Hove Scenario is SO(8)
R. S. Markiewicz, M. T. Vaughn
The various nesting and pairing instabilities of the generalized Van Hove scenario can be classified via an SO(8) spectrum-generating algebra. An SO(6) subgroup is an approximate s…