Heredia Pimienta, Carlos (Date of defense: 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 (Date of defense: 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 ...
Morera Navarro, Ivan (Date of defense: 2023-07-10)
[eng] In this Thesis we explore exotic phases of matter which arise when different mechanisms compete and favor different ground state configurations. We focus on two classes of low dimensional lattice ...
Cruces Mateo, Diego (Date of defense: 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 ...