Scalar and vector Galileons

70 & 70 Gravitation Fest

Rodríguez, Yeinzon^1,2,3 ; Navarro, Andrés A.^2

Centro de Investigaciones en Ciencias Básicas y Aplicadas, Universidad Antonio Nariño, Cra 3 Este # 47A-15, Bogotá

D.C. 110231, Colombia^1

Escuela de Física, Universidad Industrial de Santander, Ciudad Universitaria, Bucaramanga

680002, Colombia^2

Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, Trieste

1-34151, Italy^3

关键词: Fundamental theory;    Quantum levels;    Second-order equation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/831/1/012004/pdf
DOI  :  10.1088/1742-6596/831/1/012004

来源: IOP

【 摘 要 】

An alternative for the construction of fundamental theories is the introduction of Galileons. These are fields whose action leads to non higher than second-order equations of motion. As this is a necessary but not sufficient condition to make the Hamiltonian bounded from below, as long as the action is not degenerate, the Galileon construction is a way to avoid pathologies both at the classical and quantum levels. Galileon actions are, therefore, of great interest in many branches of physics, specially in high energy physics and cosmology. This proceedings contribution presents the generalities of the construction of both scalar and vector Galileons following two different but complimentary routes.