wavefunction renormalization
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Phase diagram and critical end point in nonlocal PNJL models with wavefunction renormalization

2010 ◽  
Author(s):  
Gustavo A. Contrera ◽  
Milva G. Orsaria ◽  
Norberto N. Scoccola ◽  
Marina Nielsen ◽  
Fernando S. Navarra ◽  
...  
Keyword(s):  
Phase Diagram ◽  
End Point ◽  
Wavefunction Renormalization

WAVEFUNCTION RENORMALIZATION OF ONE HOLE IN A STRONGLY CORRELATED SYSTEM

1995 ◽  
Vol 09 (25) ◽  
pp. 1685-1691 ◽  
Author(s):  
P.V. PANAT ◽  
B. DEY ◽  
D.G. KANHERE ◽  
R.E. AMRITKAR
Keyword(s):  
Two Dimensions ◽  
Strongly Correlated ◽  
Renormalization Factor ◽  
Strongly Correlated System ◽  
Model Hamiltonian ◽  
Wavefunction Renormalization ◽  
Parameter Values

The wavefunction renormalization factor Zk of a hole injected in a half-filled band in a strongly correlated system in two dimensions is evaluated analytically using the extended quasiparticle operator introduced by Dagotto and Schrieffer. A model Hamiltonian for such an extended hole is proposed. We analytically calculate Zk for different parameter values and observe that the Zk value increases as compared with what it would be if a bare hole operator is used. This is in conformity with the numerical observation of Dagotto and Schrieffer.

SOME PERTURBATIVE RESULTS FOR TWO-DIMENSIONAL GRAVITY

1990 ◽  
Vol 05 (10) ◽  
pp. 763-770 ◽  
Author(s):  
KRZYSZTOF A. MEISSNER ◽  
JACEK PAWEŁCZYK
Keyword(s):  
Central Charge ◽  
Functional Integration ◽  
Feynman Diagrams ◽  
Two Dimensional ◽  
Moody Algebra ◽  
Perturbative Approach ◽  
Anomalous Dimensions ◽  
Dimensional Gravity ◽  
Wavefunction Renormalization

Perturbative approach to two-dimensional gravity and supergravity is considered. One-loop renormalization of the central charge of SL(2, R) Kac-Moody algebra is calculated perturbatively by functional integration and by explicit calculations of the Feynman diagrams. Also the wavefunction renormalization and the anomalous dimensions in the presence of gravity are calculated.

Absence of wavefunction renormalization in polyakov amplitudes

1989 ◽  
Vol 321 (3) ◽  
pp. 605-628 ◽  
Author(s):  
Zvi Bern ◽  
David A. Kosower
Keyword(s):  
Wavefunction Renormalization
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