2016/04/11 by Jesús Martín Romero, Romero, Jesús Martín, Mauricio Bellini +3
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th) #Pulsars and Gravitational Waves Research #gr-qc #hep-th
paper · pdf · doi:10.48550/arxiv.1604.03013
Accepted in Phys. Dark Univ
openalex publication_date 2016/04/11 · arxiv created 2016/05/24 · arxiv updated 2016/05/25 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28
We study the variational principle on a Hilbert-Einstein action in an extended geometry with torsion taking into account non-trivial boundary conditions. We obtain an effective energy-momentum tensor that has its source in the torsion, which represents the matter geometrically induced. We explore about the existence of magnetic monopoles and gravitational waves in this torsional geometry. We conclude that the boundary terms can be identified as possible sources for the cosmological constant and torsion as the source of magnetic monopoles. We examine an example in which gravitational waves are produced during a de Sitter inflationary expansion of the universe.