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Podolsky's electromagnetic theory on the null-plane
(2009-12-01)
We have analyzed the null-plane canonical structure of Podolsky's electromagnetic theory. As a theory that contains higher order derivatives in the Lagrangian function, it was necessary to redefine the canonical momenta ...
Podolsky's electromagnetic theory on the null-plane
(2009-12-01)
We have analyzed the null-plane canonical structure of Podolsky's electromagnetic theory. As a theory that contains higher order derivatives in the Lagrangian function, it was necessary to redefine the canonical momenta ...
A QQ → QQ planar double box in canonical form
(Elsevier Science, 2018-02)
We consider a planar double box with four massive external momenta and two massive internal propagators. We derive the system of differential equations for the relevant master integrals, cast it in canonical form, write ...
De Sitter relativity and quantum physics
(2007-12-01)
In the presence of a cosmological constant, interpreted as a purely geometric entity, absence of matter is represented by a de Sitter spacetime. As a consequence, ordinary Poincaré special relativity is no longer valid and ...
De Sitter relativity and quantum physics
(2007-12-01)
In the presence of a cosmological constant, interpreted as a purely geometric entity, absence of matter is represented by a de Sitter spacetime. As a consequence, ordinary Poincaré special relativity is no longer valid and ...
Hamiltonian formulation of teleparallel gravity
(American Physical Society, 2016-11)
The Hamiltonian formulation of the teleparallel equivalent of general relativity is developed from an ordinary second-order Lagrangian, which is written as a quadratic form of the coefficients of anholonomy of the orthonormal ...
Noncommutativity in (2+1)-dimensions and the Lorentz group
(American Physical Society, 2012-11)
In this article we considered models of particles living in a three-dimensional space-time with a nonstandard noncommutativity induced by shifting canonical coordinates and momenta with generators of a unitary irreducible ...
Hamiltonian formalism for f (T) gravity
(American Physical Society, 2018-05)
We present the Hamiltonian formalism for f(T) gravity, and prove that the theory has n(n−3)/2+1 degrees of freedom (d.o.f.) in n dimensions. We start from a scalar-tensor action for the theory, which represents a scalarfield ...