Mostrando ítems 1-3 de 3
Heredia Pimienta, Carlos (Fecha de defensa: 2023-03-31)
[eng] This thesis aims to study nonlocal Lagrangians with a finite and an infinite number of degrees of freedom. We obtain an extension of Noether's theorem and Noether's identities for such Lagrangians. ...
Moreno Pulido, Cristian (Fecha de defensa: 2023-07-06)
[eng] The Cosmological Constant, Λ, has been a controversial element in theoretical physics and cosmology since its introduction by Einstein in his field equations in 1917. Despite maintaining an irregular ...
Cruces Mateo, Diego (Fecha de defensa: 2023-12-13)
[eng] From the observation of the cosmic microwave background radiation (CMBR) we know that the universe is isotropic on scales larger than ∼ 75 Megaparsec to at least one part in 100000. The leading ...