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20022009
most citedExtended Theories of Gravity and their Cosmological and Astrophysical Applications

891 citations

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5 papers · 1 filter

math-ph20072 cited

A quantum Goldman bracket in 2+1 quantum gravity

J. E. Nelson, R. F. Picken

In the context of quantum gravity for spacetimes of dimension 2+1, we describe progress in the construction of a quantum Goldman bracket for intersecting loops on surfaces. Using p…

math-ph2004

Constant connections, quantum holonomies and the Goldman bracket

J. E. Nelson, R. F. Picken

In the context of (2+1)--dimensional quantum gravity with negative cosmological constant and topology R x T^2, constant matrix--valued connections generate a q--deformed representa…

math-ph20046 cited

Second variational derivative of gauge-natural invariant Lagrangians and conservation laws

M. Francaviglia, M. Palese, E. Winterroth

We consider the second variational derivative of a given gauge-natural invariant Lagrangian taken with respect to (prolongations of) vertical parts of gauge-natural lifts of infini…

math-ph20033 cited

A New Geometric Proposal for the Hamiltonian Description of Classical Field Theories

Mauro Francaviglia, Marcella Palese, Ekkehart Winterroth

We consider the geometric formulation of the Hamiltonian formalism for field theory in terms of {\em Hamiltonian connections} and {\em multisymplectic forms}. In this framework the…

math-ph200316 cited

Global Generalized Bianchi Identities for Invariant Variational Problems on Gauge-natural Bundles

M. Palese, E. Winterroth

We derive both {\em local} and {\em global} generalized {\em Bianchi identities} for classical Lagrangian field theories on gauge-natural bundles. We show that globally defined gen…