Recent Developments In Gravitation And Cosmology

This volume reviews some recent developments and new perspectives in classical and Quantum Gravity. The topics treated at a graduate level range from some new and old problems in General Relativity, algebraic computing, gravitational wave astronomy to some more speculative subjects as the early Universe, Quantum Gravity and Quantum Cosmology. Contents:Low Energy Effects of Quantum Gravity (E Alvarez)Rigid Motion Invariance of Newtonian and Einstein's Theories of General Relativity (L Bel)General Relativity and the Early Universe (B J Carr)Computer Algebra and Exact Solutions of the Einstein Equations (M A H MacCallum)Gravitational Waves (B F Schutz)and others Readership: Cosmologists, astrophysicists and mathematical physicists.

This volume provides an overview of the progress in gravitational physics, reporting recent theoretical, experimental and observational results. The book is based on the plenary, invited and contributed papers presented at the biennial conference of the Italian Society of General Relativity and Gravitation (SIGRAV) held in Rome, September 2002. The contributors discuss topics such as general relativity, quantum gravity, relativistic astrophysics, cosmology and experimental gravitation. This book is ideal for researchers and postgraduate students in relativity, gravitation, cosmology, astrophysics and high energy physics.

The 13th Italian Conference on General Relativity and Gravitational Physics was held in Cala Corvino-Monopoli (Bari) from September 21to September 25, 1998. The Conference, which is held every other year in different Italian locations, has brought together, as in the earlier conferences in this series, those scientists who are interested and actively work in all aspects of general relativity, from both the mathematical and the physical points of view: from classical theories of gravitation to quantum gravity, from relativistic astrophysics and cosmology to experiments in gravitation. About 70 participants came from Departments of Astronomy and Astrophysics, Departments of Mathematics and Departments of Experimental and Theoretical Physics from all over the Country; in addition a few Italian scientists working abroad kindly accepted invitations from the Scientific Committee. The good wishes of the University and of the Politecnico di Bari were conveyed by the director of Diparti mento Interuniversitario di Matematica, Prof. Franco Altomare. These proceedings contain the contributions of the two winners of the SIGRAV prizes, the invited talks presented at the Conference and most of the contributed talks. We thank all of our colleagues, who did their best to prepare their manuscripts. The pleasant atmosphere induced by the beauty of the place was greatlyenhanced not only by the participation of so many colleagues, who had lively discussions about science well beyond Conference hours, but also by the feeling of hospitalityextended to the participants by the staff of the Cala Corvino Hotel, where the Conference was held.

With a focus on modified gravity this book presents a review of the recent developments in the fields of gravity and cosmology, presenting the state of the art, high-lighting the open problems, and outlining the directions of future research. General Relativity and the ΛCDM framework are currently the standard lore and constitute the concordance paradigm of cosmology. Nevertheless, long-standing open theoretical issues, as well as possible new observational ones arising from the explosive development of cosmology in the last two decades, offer the motivation and lead a large amount of research to be devoted in constructing various extensions and modifications. In this review all extended theories and scenarios are first examined under the light of theoretical consistency, and are then applied in various geometrical backgrounds, such as the cosmological and the spherical symmetric ones. Their predictions at both the background and perturbation levels, and concerning cosmology at early, intermediate and late times, are then confronted with the huge amount of observational data that astrophysics and cosmology has been able to offer in the last two decades. Theories, scenarios and models that successfully and efficiently pass the above steps are classified as viable and are candidates for the description of Nature, allowing readers to get a clear overview of the state of the art and where the field of modified gravity is likely to go. This work was performed in the framework of the COST European Action “Cosmology and Astrophysics Network for Theoretical Advances and Training Actions” - CANTATA.

This book contains the proceedings of the 10th Hellenic Relativity Conference, held in Greece in 2002. It includes several plenary lectures given by leading experts on brane-world cosmology, radiative space-times, detection of gravitational waves, gamma-ray bursts and quantum gravity. There are a large number of contributed papers, organized into three broad subject areas: cosmology and brane gravity, mathematical relativity and astrophysical relativity, and the detection of gravitational waves. Contents:Radiative Fields in Spacetimes with Minkowski and de Sitter Asymptotics (J Bicák)Gravitational Wave Detectors: A Report from LIGO-Land (G Gonzalez)Brane-World Cosmology (R Maartens)Consistent Discrete Gravity Solution of the Problem of Time: A Model (J Pullin)Dark Energy or Extra Dimension Oscillations? (L Perivolaropoulos)Cosmic Rays and Large Extra Dimensions (D Kazanas & A Nicolaidis)Completeness Theorems in General Relativity (Y Choquet-Bruhat & S Cotsakis)Gravity Wave Boost of Cosmic Magnetic Fields (C G Tsagas et al.)Axisymmetric Modes of Differentially Rotating Neutron Stars (T A Apostolatos et al.)Stellar Perturbation Theory and the Detection of Gravitational Waves from Neutron-Star Binaries (E Berti)and other papers Readership: Researchers and graduate students in astrophysics, astronomy, cosmology and theoretical physics. Keywords:Relativity;Cosmology;Relativistic Astrophysics;Gravitational Waves;Numerical Relativity;Quantum Gravity;Brane-World Gravity

The Relativity Meeting 1991 was devoted to the review of recent developments in gravity theory. Topics ranged from the classical theory of gravity to Quantum Gravity and Cosmology.

The Relativity Meeting 1991 was devoted to the review of recent developments in gravity theory. Topics ranged from the classical theory of gravity to Quantum Gravity and Cosmology.

The Third Mexican Meeting on Mathematical and Experimental Physics brought together scientists from many different fields. The Meeting was divided into three Symposia: (i) Physical Chemistry, (ii) Biological Physics, (iii) Gravitation and Cosmology. This proceedings presents the papers of the Gravitation and Cosmology Symposium. The main goal of the Gravitation and Cosmology Symposium was to present the perspectives of scientists in the fields of cosmology and gravitation regarding their current work as well as the anticipated development of their research fields in the near future.