RT Journal Article T1 Generalizations of the Pontryagin and Husain-Kuchar actions to manifolds with boundary A1 Barbero G., J. Fernando A1 Díaz Jiménez, Bogar A1 Margalef Bentabol, Juan A1 Sánchez Villaseñor, Eduardo Jesús AB In this paper we study a family of generalizations of the Pontryagin and Husain-Kuchaˇr actions on manifolds with boundary. In some cases, they describe well known models — either at the boundary or in the bulk — such as 3-dimensional Euclidean general relativity with a cosmological constant or the Husain-Kuchaˇr model. We will use Hamiltonian methods in order to disentangle the physical and dynamical content of the systems that we discuss here. This will be done by relying on a geometric implementation of the Dirac algorithm in the presence of boundaries recently proposed by the authors. PB Springer SN 1029-8479 YR 2019 FD 2019-10-09 LK https://hdl.handle.net/10016/32259 UL https://hdl.handle.net/10016/32259 LA eng NO This work has been supported by the Spanish Ministerio de Ciencia Innovación y Universidades-Agencia Estatal de Investigacióon/FIS2017-84440-C2-2-P grant. Bogar Díıaz is supported by the CONACYT (Mexico) postdoctoral research fellowship No 371778. Juan Margalef-Bentabol is supported by 2017SGR932 AGAUR/Generalitat de Catalunya, MTM2015-69135-P/FEDER, MTM2015-65715-P. He is also supported in part by the Eberly Research Funds of Penn State, by the NSF grant PHY-1806356, and by the Urania Stott fund of Pittsburgh foundation UN2017-92945. DS e-Archivo RD 27 jul. 2024