New phases in systems of localized fermions on a lattice

1987 ◽  
Vol 37 (4) ◽  
pp. 412-420 ◽  
Author(s):  
M. Noga
Keyword(s):  
Localized Fermions

Almost localized fermions in a magnetic field: Properties at the metamagnetic transition

1997 ◽  
Vol 56 (3) ◽  
pp. 971-974 ◽  
Author(s):  
Jozef Spałek ◽  
Paweł Korbel ◽  
Włodzimierz Wójcik
Keyword(s):  
Magnetic Field ◽  
Metamagnetic Transition ◽  
Localized Fermions

Extended Supersymmetric Structures in Gapped and Superconducting Graphene

2015 ◽  
Vol 12 (10) ◽  
pp. 1550114 ◽  
Author(s):  
V. K. Oikonomou
Keyword(s):  
Domain Wall ◽  
Quantum Field ◽  
Exact Form ◽  
Gapped Graphene ◽  
One Dimensional ◽  
Witten Index ◽  
Associated Operators ◽  
The Many ◽  
Localized Fermions ◽  
Topological Charges

In view of the many quantum field theoretical descriptions of graphene in 2 + 1 dimensions, we present another field theoretical feature of graphene, in the presence of defects. Particularly, we shall be interested in gapped graphene in the presence of a domain wall and also for superconducting graphene in the presence of a vortex. As we explicitly demonstrate, the gapped graphene electrons that are localized on the domain wall are associated with four N = 2 one-dimensional supersymmetries, with each pair combining to form an extended N = 4 supersymmetry with non-trivial topological charges. The case of superconducting graphene is more involved, with the electrons localized on the vortex being associated with n one-dimensional supersymmetries, which in turn combine to form an N = 2n extended supersymmetry with non-trivial topological charges. As we shall prove, all supersymmetries are unbroken, a feature closely related to the number of the localized fermions and also to the exact form of the associated operators. In addition, the corresponding Witten index is invariant under compact and odd perturbations.

Crossover from Fermi liquid to classical behavior of normal3He in the model of almost localized fermions

1986 ◽  
Vol 64 (3-4) ◽  
pp. 195-221 ◽  
Author(s):  
K. Seiler ◽  
C. Gros ◽  
T. M. Rice ◽  
K. Ueda ◽  
D. Vollhardt
Keyword(s):  
Fermi Liquid ◽  
Classical Behavior ◽  
Localized Fermions

scholarly journals Antiferromagnetism of almost localized fermions: Evolution from Slater-type to Mott-Hubbard gap

2003 ◽  
Vol 32 (3) ◽  
pp. 315-322 ◽  
Author(s):  
P. Korbel ◽  
W. Wójcik ◽  
A. Klejnberg ◽  
J. Spałek ◽  
M. Acquarone ◽  
...  
Keyword(s):  
Slater Type ◽  
Localized Fermions
Sign in / Sign up

Export Citation Format

Share Document