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Surveillance on the light-front gauge-fixing Lagrangians
(2004-08-20)
In this work we propose two Lagrange multipliers with distinct coefficients for the light-front gauge that leads to the complete (non-reduced) propagator. This is accomplished via (n · A)2 + (∂ · A) 2 terms in the Lagrangian ...
Surveillance on the light-front gauge-fixing Lagrangians
(2004-08-20)
In this work we propose two Lagrange multipliers with distinct coefficients for the light-front gauge that leads to the complete (non-reduced) propagator. This is accomplished via (n · A)2 + (∂ · A) 2 terms in the Lagrangian ...
On infrared problems of effective Lagrangians of massive spin 2 fields coupled to gauge fields
(2016)
In this paper we analyze the interactions of massive spin-2 particles charged under both Abelian and non-Abelian group using the Porrati-Rahman Lagrangian. This theory is valid up to an intrinsic cutoff scale. Phenomenologically ...
Nonquadratic gauge fixing and global gauge invariance in the effective action
(AMER PHYSICAL SOC, 2009)
The possibility of having a gauge fixing term in the effective Lagrangian that is not a quadratic expression has been explored in spin-two theories so as to have a propagator that is both traceless and transverse. We first ...
A universal order parameter for Inverse Magnetic Catalysis
(Springer, 2017-10-05)
We revisit the chiral transition in the finite density Sakai-Sugimoto model and find that, at fixed temperature T, the magnetisation near the critical line mu(c)(B) acts as an order parameter to distinguish Inverse Magnetic ...
Integration over families of Lagrangian submanifolds in BV formalism
(Elsevier B.V., 2018-03-01)
Gauge fixing is interpreted in BV formalism as a choice of Lagrangian submanifold in an odd symplectic manifold (the BV phase space). A natural construction defines an integration procedure on families of Lagrangian ...
Light-front gauge propagator reexamined
(2003-09-22)
Gauge fields are special in the sense that they are invariant under gauge transformations and ipso facto they lead to problems when we try quantizing them straightforwardly. To circumvent this problem we need to specify a ...
Sistemas vinculados e o problema da fixação de calibre na ação
(Universidade Estadual Paulista (Unesp), 2019-12-13)
The present work deals with gauge symmetries in discrete systems and classical field theories. The text presents the method of counting degrees of freedom in Hamiltonian formalism in order to investigate the problem of ...