scholarly journals Simple Derivation of Cluster Expansions for Many-Fermion Systems

1965 ◽  
Vol 34 (5) ◽  
pp. 726-733 ◽  
Author(s):  
J. W. Clark ◽  
D. Chakkalakal ◽  
P. Westhaus
Keyword(s):  
Simple Derivation ◽  
Cluster Expansions ◽  
Fermion Systems

scholarly journals Unusual Al27 NMR shift in the Weyl-fermion systems LaAlGe and PrAlGe

2020 ◽  
Vol 102 (24) ◽  
Author(s):  
D. Tay ◽  
T. Shang ◽  
P. Puphal ◽  
E. Pomjakushina ◽  
H.-R. Ott ◽  
...  
Keyword(s):  
Fermion Systems ◽  
Weyl Fermion

scholarly journals Supersymmetric Cluster Expansions and Applications to Random Schrödinger Operators

2021 ◽  
Vol 24 (1) ◽  
Author(s):  
Luca Fresta
Keyword(s):  
Density Of States ◽  
Local Density ◽  
Schrödinger Operators ◽  
Random Schrödinger Operators ◽  
Schrodinger Operators ◽  
Local Density Of States ◽  
Weak Disorder ◽  
Cluster Expansions ◽  
Strong Disorder ◽  
Lifshitz Tail

AbstractWe study discrete random Schrödinger operators via the supersymmetric formalism. We develop a cluster expansion that converges at both strong and weak disorder. We prove the exponential decay of the disorder-averaged Green’s function and the smoothness of the local density of states either at weak disorder and at energies in proximity of the unperturbed spectrum or at strong disorder and at any energy. As an application, we establish Lifshitz-tail-type estimates for the local density of states and thus localization at weak disorder.

scholarly journals Many-body entanglement in fermion systems

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
N. Gigena ◽  
M. Di Tullio ◽  
R. Rossignoli
Keyword(s):  
Many Body ◽  
Fermion Systems
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