Recent advances in general relativity. Essays in honor of Ted Newman
type: Item
instance of: scholarly article
title: Recent advances in general relativity. Essays in honor of Ted Newman
zbMATH Open document ID: 0840.53076
published in: Einstein Studies
publication date: 1995-10-23T00:00:00Z
review text: [The articles of this volume will not be indexed individually.] These proceedings of the 1990 Pittsburgh Conference are a tribute to Ted Newman. Some essays recall ideas and mathematical techniques due to him, and their developments, while others concentrate on recent advances in a few problems in general relativity. Gravitational radiation and quantum gravity are those stressed in the opening lecture (Bergmann). The analysis of the asymptotic symmetry group of future null infinity, the Bondi-Metzner-Sachs group, led him with an appropriate complexification, to \(H\)-space and the \(e\)th operator; the connections of the former with twistor theory are recalled (Penrose) and the Newman-Penrose formalism with a tetrad of non-commutative operators is constructed, as an application of the second (Sparling). Newman's cut function is related to the Blaschke support function for a convex surface and leads to a version of the fuzzy point idea in Minkowski spacetime (Tod). The study of the asymptotic structure of spacetime adapted to ``isolated'' gravitating systems using the technique of the conformal extension of Minkowski spacetime is reviewed and contrasted with recent advances (Friederich). Holonomy variables introduced by Newman and Koznameh are recognized as basic in the loop quantization and their application to nonperturbative quantum gravity is discussed (Rovelli). The Kerr-Newman black hole furnishes the occasion for reviewing recent progress regarding the limitations of the ``no hair'' paradigm and the study of black hole interior; the latter seems to favour a bouncing universe starting from a baby universe (Israel). A few recent results concerning neutron stars (relation between maximum rotation and equation of state, possibility of quark core etc.) are outlined (J. L. Friedman). Prospects for the detection of gravitational waves (Thorne) are considered along with conflicting views on the cross-sections of resonant-bar gravitational wave detectors and on their a…
Mathematics Subject Classification ID: 53Z05
Mathematics Subject Classification ID: 83-06
Mathematics Subject Classification ID: 00B25
Mathematics Subject Classification ID: 83C30
Mathematics Subject Classification ID: 83C35
Mathematics Subject Classification ID: 83C45
Mathematics Subject Classification ID: 83C57
Mathematics Subject Classification ID: 83C60
zbMATH DE Number: 808450
zbMATH Keywords: Proceedings
zbMATH Keywords: General relativity
zbMATH Keywords: Pittsburgh/USA
zbMATH Keywords: proceedings
zbMATH Keywords: 1990 Pittsburgh Conference
zbMATH Keywords: Ted Newman
zbMATH Keywords: general relativity
zbMATH Keywords: quantum gravity
MaRDI profile type: Publication
description: scientific article; zbMATH DE number 808450