Variational Approach to Gravity Field Theories: From Newton to Einstein and Beyond By Alberto Vecchiato
English | PDF | 2017 | 364 Pages | ISBN : 3319512099 | 4 MB
This book offers a detailed and stimulating account of the Lagrangian, or variational, approach to general relativity and beyond. The approach more usually adopted when describing general relativity is to introduce the required concepts of differential geometry and derive the field and geodesic equations from purely geometrical properties. Demonstration of the physical meaning then requires the weak field approximation of these equations to recover their Newtonian counterparts.