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A new geometric framework is developed to describe non-conservative classical field theories, which is based on multisymplectic and contact geometries. Assuming certain additional conditions and using the forms that define this multicontact…

Mathematical Physics · Physics 2023-02-22 Manuel de León , Jordi Gaset , Miguel Carlos Muñoz-Lecanda , Xavier Rivas , Narciso Román-Roy

The newly developed multicontact structure, based on contact and multisymplectic geometries, provides a very general geometrical framework suitable for the treatment of action-dependent classical field theories. Having successfully applied…

Mathematical Physics · Physics 2025-11-04 Xavier Rivas , Narciso Román-Roy , Annamaria Villanova

Action-dependent field theories are systems where the Lagrangian or Hamiltonian depends on new variables that encode the action. They model a larger class of field theories, including non-conservative behavior, while maintaining a…

High Energy Physics - Theory · Physics 2025-05-01 Manuel de León , Jordi Gaset Rifà , Miguel C. Muñoz-Lecanda , Xavier Rivas , Narciso Román-Roy

This review paper is concerned with the generalizations to field theory of the tangent and cotangent structures and bundles that play fundamental roles in the Lagrangian and Hamiltonian formulations of classical mechanics. The paper…

Mathematical Physics · Physics 2007-05-23 Manuel de León , Michael McLean , Larry K. Norris , Angel Rey-Roca , Modesto Salgado

This paper provides a new geometric framework to describe non-conservative field theories with explicit dependence on the space-time coordinates by combining the k-cosymplectic and k-contact formulations. This geometric framework, the…

Mathematical Physics · Physics 2023-04-05 Xavier Rivas

Systems of partial differential equations which appear in classical field theories can be studied geometrically using different geometrical structures, for example, k-symplectic geometry, k-cosymplectic geometry, multisymplectic geometry,…

Mathematical Physics · Physics 2025-06-16 S. Vilariño

In previous papers, a geometric framework has been developed to describe non-conservative field theories as a kind of modified Lagrangian and Hamiltonian field theories. This approach is that of $k$-contact Hamiltonian systems, which is…

Mathematical Physics · Physics 2022-02-02 Xavier Gràcia , Xavier Rivas , Narciso Román-Roy

The well-known geometric approach to field theory is based on description of classical fields as sections of fibred manifolds, e.g. bundles with a structure group in gauge theory. In this approach, Lagrangian and Hamiltonian formalisms…

High Energy Physics - Theory · Physics 2007-05-23 G. Sardanashvily

This review paper is devoted to presenting the standard multisymplectic formulation for describing geometrically classical field theories, both the regular and singular cases. First, the main features of the Lagrangian formalism are…

Mathematical Physics · Physics 2015-12-15 Narciso Román-Roy

This work is devoted to review the modern geometric description of the Lagrangian and Hamiltonian formalisms of the Hamilton--Jacobi theory. The relation with the "classical" Hamiltonian approach using canonical transformations is also…

Mathematical Physics · Physics 2021-01-12 Narciso Román-Roy

In the jet bundle description of Field Theories (multisymplectic models, in particular), there are several choices for the multimomentum bundle where the covariant Hamiltonian formalism takes place. As a consequence, several proposals for…

Mathematical Physics · Physics 2011-08-05 A. Echeverrí a-Enrí quez , M. C. Muñoz-Lecanda , N. Román-Roy

We propose a generalization of the classical Tulczyjew triple as a geometric tool in Hamiltonian and Lagrangian formalisms which serves for contact manifolds. The r\^ole of the canonical symplectic structures on cotangent bundles in…

Symplectic Geometry · Mathematics 2024-11-04 Katarzyna Grabowska , Janusz Grabowski

The objective of this work is twofold: First, we analyze the relation between the k-cosymplectic and the k-symplectic Hamiltonian and Lagrangian formalisms in classical field theories. In particular, we prove the equivalence between…

Mathematical Physics · Physics 2015-12-15 Narciso Roman-Roy , Angel M. Rey , Modesto Salgado , Silvia Vilarino

We study the geometrical background of the Hamiltonian formalism of first-order Classical Field Theories. In particular, different proposals of multimomentum bundles existing in the usual literature (including their canonical structures)…

Mathematical Physics · Physics 2016-04-11 A. Echeverria-Enriquez , M. C. Munoz-Lecanda , N. Roman-Roy

This is the first paper of a five part work in which we study the Lagrangian and Hamiltonian structure of classical field theories with constraints. Our goal is to explore some of the connections between initial value constraints and gauge…

Mathematical Physics · Physics 2008-11-06 Mark J. Gotay , James Isenberg , Jerrold E. Marsden , Richard Montgomery

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 covariant Hamilton equations for Mechanics and field theory…

Mathematical Physics · Physics 2007-05-23 Mauro Francaviglia , Marcella Palese , Ekkehart Winterroth

Contact geometry allows to describe some thermodynamic and dissipative systems. In this paper we introduce a new geometric structure in order to describe time-dependent contact systems: cocontact manifolds. Within this setting we develop…

Mathematical Physics · Physics 2023-01-27 Manuel de León , Jordi Gaset , Xavier Gràcia , Miguel Carlos Muñoz-Lecanda , Xavier Rivas

The jet formalism for Classical Field theories is extended to the setting of Lie algebroids. We define the analog of the concept of jet of a section of a bundle and we study some of the geometric structures of the jet manifold. When a…

Differential Geometry · Mathematics 2007-05-23 Eduardo Martinez

The k-cosymplectic Lagrangian and Hamiltonian formalisms of first-order field theories are reviewed and completed. In particular, they are stated for singular and almost-regular systems. Subsequently, several alternative formulations for…

Mathematical Physics · Physics 2015-12-15 Angel M. Rey , Narciso Roman-Roy , Modesto Salgado , Silvia Vilarino

A geometric framework, called multicontact geometry, has recently been developed to study action-dependent field theories. In this work, we use this framework to analyze symmetries in action-dependent Lagrangian and Hamiltonian field…

Mathematical Physics · Physics 2025-03-06 Xavier Rivas , Narciso Román-Roy , Bartosz M. Zawora
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