105 citations · 544 across the 22 of their papers we have counts for
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Polar form of Dirac fields: implementing symmetries via Lie derivative
Luca Fabbri, Stefano Vignolo, Roberto Cianci
We consider the Lie derivative along Killing vector fields of the Dirac relativistic spinors: by using the polar decomposition we acquire the mean to study the implementation of sy…
A new geometrical look at Ostrogradsky procedure
Enrico Massa, Stefano Vignolo, Roberto Cianci +1
Making use of the modern techniques of non-holonomic geometry and constrained variational calculus, a revisitation of Ostrogradsky's Hamiltonian formulation of the evolution equati…
General Relativity as a constrained Gauge Theory
R. Cianci, S. Vignolo, D. Bruno
The formulation of General Relativity presented in math-ph/0506077 and the Hamiltonian formulation of Gauge theories described in math-ph/0507001 are made to interact. The resultin…
On the Hamiltonian formulation of Yang--Mills gauge theories
R. Cianci, S. Vignolo, D. Bruno
The Hamiltonian formulation of the theory of J-bundles is given both in the Hamilton--De Donder and in the Multimomentum Hamiltonian geometrical approaches. (3+3) Yang-Mills gauge…
A first-order purely frame-formulation of General Relativity
R. Cianci, S. Vignolo, D. Bruno
In the gauge natural bundle framework a new space is introduced and a first-order purely frame-formulation of General Relativity is obtained.