Document Type : Authored Book

Author

• Shahab Shahidi

Department of Physics, Damghan University, Damghan, Iran.

Abstract

This book presents the findings of research by leading scholars in gravity and cosmology, including the author, focusing on the critical role of matter-geometry interactions and their effects on the dynamics of our universe. It is structured to be accessible to readers with a foundational background in gravity and cosmology, making it a valuable resource for graduate students and researchers interested in this advanced topic.
The book is systematically organized into four comprehensive parts, each exploring a distinct class of theoretical models:

Part 1 examines foundational, historically significant theories of matter-geometry interaction, such as Rastall theory and Einstein's Dark Energy model.
Part 2 delves into non-minimal matter-geometry couplings, covering influential theories like f(R,Lm)f(R,Lm​) and f(R,T)f(R,T) gravity, which have been actively developed over the past 15 years.
Part 3 investigates theories with non-standard matter couplings, where the matter sector differs from the conventional baryonic Lagrangian and typically couples to geometry in a non-minimal way, as seen in models like Energy-Momentum Squared Gravity and Energy-Momentum Powered Gravity.
Part 4 explores the most advanced class: derivative interactions between matter and geometry. These theories incorporate non-standard matter terms that are non-minimally coupled, with the key distinction that derivatives of the matter Lagrangian or the energy-momentum tensor are also considered.

By providing a clear and structured exploration from historical foundations to the cutting edge of theoretical research, this book serves as a significant contribution to the field, offering a clear pathway for cosmologists to understand the profound implications of how matter and spacetime geometry influence each other.
 

Cover

Main Subjects

• Physics

ISBN: 9786225209084