Ghost Field Gauging Used in Electrodynamic Simulation

2004 ◽  
pp. 213-218
Author(s):  
Peter Meuris ◽  
Wim Schoenmaker ◽  
Wim Magnus ◽  
Bert Maleszka
Keyword(s):  
Ghost Field

PERTURBATIVE EXPANSION FOR THE t-J MODEL CONSTRUCTED FROM THE GENERATORS OF THE SUPERSYMMETRIC HUBBARD ALGEBRA

2009 ◽  
Vol 23 (14) ◽  
pp. 3159-3177
Author(s):  
CARLOS E. REPETTO ◽  
OSCAR P. ZANDRON
Keyword(s):  
Perturbative Expansion ◽  
Lagrangian Formalism ◽  
Graded Algebra ◽  
Integral Formalism ◽  
Generating Functional ◽  
First Order ◽  
Effective Lagrangian ◽  
Supersymmetric Version ◽  
Present Formalism ◽  
Ghost Field

By using the Hubbard [Formula: see text]-operators as field variables along with the supersymmetric version of the Faddeev–Jackiw symplectic formalism, a family of first-order constrained Lagrangians for the t-J model is found. In order to satisfy the Hubbard [Formula: see text]-operator commutation rules satisfying the graded algebra spl(2,1), the number and kind of constraints that must be included in a classical first-order Lagrangian formalism for this model are presented. The model is also analyzed via path-integral formalism, where the correlation-generating functional and the effective Lagrangian are constructed. In this context, the introduction of a proper ghost field is needed to render the model renormalizable. The perturbative Lagrangian formalism is developed and it is shown how propagators and vertices can be renormalized to each order. In particular, the renormalized ferromagnetic magnon propagator arising in the present formalism is discussed. As an example, the thermal softening of the magnon frequency is computed.

THE ROLE OF THE GHOST FIELDS IN THE RENORMALIZED t–J LAGRANGIAN MODEL

2009 ◽  
Vol 23 (04) ◽  
pp. 493-519
Author(s):  
O. S. ZANDRON
Keyword(s):  
Thermal Softening ◽  
Lagrangian Model ◽  
Lagrangian Formalism ◽  
Spin Polaron ◽  
Renormalization Procedure ◽  
Ghost Field

The present work treats the role of ghost fields in the renormalization procedure of the Lagrangian perturbative formalism of the t–J model. We show that by introducing proper ghost field variables, the propagators and vertices can be renormalized to each order. In particular, the renormalized ferromagnetic magnon propagator coming from our previous Lagrangian formalism is studied in detail, and it is shown how the thermal softening of the magnon frequency is predicted by the model. The antiferromagnetic case is also analyzed, and the results are confronted with the previous one obtained by means of the spin-polaron theories.

scholarly journals Does emergent scenario in Hořava–Lifshitz gravity demand a ghost field?

2020 ◽  
Vol 30 ◽  
pp. 100740
Author(s):  
Akash Bose ◽  
Subenoy Chakraborty
Keyword(s):  
Emergent Scenario ◽  
Ghost Field

Ghost-field formalism for vector particles

1974 ◽  
Vol 10 (10) ◽  
pp. 3303-3306 ◽  
Author(s):  
Debojit Barua ◽  
Suraj N. Gupta
Keyword(s):  
Field Formalism ◽  
Ghost Field ◽  
Vector Particles

scholarly journals GHOSTS AND TACHYONS IN THE FIFTH DIMENSION

2008 ◽  
Vol 23 (06) ◽  
pp. 881-893 ◽  
Author(s):  
MAXIM POSPELOV
Keyword(s):  
Model Building ◽  
Gravity Models ◽  
Kinetic Term ◽  
Finite Width ◽  
Four Dimensions ◽  
Gaussian Profile ◽  
Fifth Dimension ◽  
Compact Dimension ◽  
Dimensional Gravity ◽  
Ghost Field

We present several solutions for the five-dimensional gravity models in the presence of bulk ghosts and tachyons to argue that these "troublesome" fields can be a useful model-building tool. The ghost-like signature of the kinetic term for a bulk scalar creates a minimum in the scale factor, removing the necessity for a negative tension brane in models with the compactified fifth dimension. It is shown that the model with the positive tension branes and a ghost field in the bulk leads to the radion stabilization. The bulk scalar with the variable sign kinetic term can be used to model both positive and negative tension branes of a finite width in the compact dimension. Finally, we present several ghost and tachyon field configurations in the bulk that lead to the localization of gravity in four dimensions, including one solution with the Gaussian profile for the metric, gμν(y) = ημν exp {-αy2}, which leads to a stronger localization of gravity than the Randall–Sundrum model.

THE COVARIANT CONSISTENT QUANTIZATION OF BOSONIZED CHIRAL SCHWINGER MODEL

1988 ◽  
Vol 03 (13) ◽  
pp. 1277-1283
Author(s):  
Y.S. MYUNG
Keyword(s):  
Scalar Field ◽  
Auxiliary Field ◽  
Schwinger Model ◽  
Proca Field ◽  
Zero Norm ◽  
Ghost Field

From Ward-Takahashi identities and full propagators, we obtain a massive Proca field Uμ which has the positive norm state. There also exists a massless physical scalar field H which turns out to be the positive norm state only for 4e2>1. It is further shown that a dipole ghost field D and auxiliary field B, as quartet members, belong to the zero norm states.

scholarly journals Ghost field realizations of the spinorW2,sstrings based on

2005 ◽  
Vol 2005 (01) ◽  
pp. 005-005 ◽  
Author(s):  
Yuxiao Liu ◽  
Lijie Zhang ◽  
Jirong Ren
Keyword(s):  
Ghost Field

Second-class constraints and quantization on the light cone

1986 ◽  
Vol 64 (5) ◽  
pp. 549-550 ◽  
Author(s):  
Gerry McKeon
Keyword(s):  
Light Cone ◽  
Radiative Corrections ◽  
Quantization Procedure ◽  
Effective Lagrangian ◽  
Ghost Field ◽  
Lightlike Vector

Quantization on a surface orthogonal to a fixed lightlike vector leads to a set of second-class constraints in addition to the usual first-class constraints encountered in the conventional quantization procedure. This leads to an additional ghost field in the effective Lagrangian, but it is argued that this ghost field decouples in any computation of radiative corrections and does not enter the Becchi–Rouet–Stora identities.

Explicit classical construction of the Faddeev-Popov ghost field

1980 ◽  
Vol 56 (4) ◽  
pp. 396-404 ◽  
Author(s):  
J. Thierry-Mieg
Keyword(s):  
Popov Ghost ◽  
Ghost Field ◽  
Classical Construction
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