Structure Formation in Modified Gravity Cosmologies

Alexandre Barreira (Autor)

Buch | Softcover

XVIII, 218 Seiten

2018 | 1. Softcover reprint of the original 1st ed. 2016
Springer International Publishing (Verlag)
978-3-319-81575-6 (ISBN)

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This unique thesis covers all aspects oftheories of gravity beyond Einstein's General Relativity, from setting up theequations that describe the evolution of perturbations, to determining thebest-fitting parameters using constraints like the microwave backgroundradiation, and ultimately to the later stages of structure formation usingstate-of-the-art N-body simulations and comparing them to observations ofgalaxies, clusters and other large-scale structures. This truly ground-breakingwork puts the study of modified gravity models on the same footing as thestandard model of cosmology. Since the discovery of the accelerating expansionof the Universe, marked by the awarding of the 2011 Nobel Prize in Physics,there has been a growing interest in understanding what drives thatacceleration. One possible explanation lies in theories of gravity beyondEinstein's General Relativity. This thesis addresses all aspects of the problem,an approach that is crucial to avoiding potentially catastrophic biases in theinterpretation of upcoming observational missions.

Alexandre Barreira is originally from Porto, Portugal. He completed his undergraduate Master degrees in physics in 2011 at the University of Porto, supervised by Prof. Pedro Avelino. Barreira then carried out his PhD at Durham University under the supervision of Prof. Carlton Baugh, Dr. Baojiu Li and Prof. Silvia Pascoli, successfully defended his thesis in May 2015. On the basis of outstanding overall performance during his PhD years, Barreira was awarded the North Holland Research Physics Prize in 2012 and the Keith Nicholas Prize in 2014 by the Department of Physics. He is now a post-doctoral researcher at the Max Planck Institute for Astrophysics in Germany.

Introduction.- Linear Perturbations in Galileon Gravity Models.- The Observational Status of Galileon Gravity After Planck.- Spherical Collapse in Galileon Gravity .- N-body Simulations and Halo Modelling in Galileon Gravity Cosmologies.- Nonlinear Structure Formation in Nonlocal Gravity.- Lensing by Clusters and Voids in Modified Lensing Potentials.- Summary, Conclusions and Future Work.

Erscheinungsdatum	05.03.2022
Reihe/Serie	Springer Theses
Zusatzinfo	XVIII, 218 p. 59 illus. in color.
Verlagsort	Cham
Sprache	englisch
Maße	155 x 235 mm
Gewicht	3635 g
Themenwelt	Naturwissenschaften ► Physik / Astronomie ► Astronomie / Astrophysik
	Naturwissenschaften ► Physik / Astronomie ► Relativitätstheorie
	Naturwissenschaften ► Physik / Astronomie ► Theoretische Physik
Schlagworte	Cosmological Constraints • Cosmological Tests of General Relativity • Dark Energy Alternatives • Gravity beyond General Relativity • Large Scale Structure Formation • Modified Gravitational Lensing • modified gravity
ISBN-10	3-319-81575-X / 331981575X
ISBN-13	978-3-319-81575-6 / 9783319815756
Zustand	Neuware