73 citations · 243 across the 9 of their papers we have counts for
9 papers · 1 filter
Lemaitre-Tolman-Bondi collapse from the perspective of loop quantum gravity
Martin Bojowald, Tomohiro Harada, Rakesh Tibrewala
Lemaitre-Tolman-Bondi models as specific spherically symmetric solutions of general relativity simplify in their reduced form some of the mathematical ingredients of black hole or…
Asymptotically Friedmann self-similar scalar field solutions with potential
Masanori Kyo, Tomohiro Harada, Hideki Maeda
We investigate self-similar solutions which are asymptotic to the Friedmann universe at spatial infinity and contain a scalar field with potential. The potential is required to be…
Critical Collapse of Einstein Cluster
Ashutosh Mahajan, Tomohiro Harada, Pankaj S. Joshi +1
We observe critical phenomena in spherically symmetric gravitational collapse of Einstein Cluster. We show analytically that the collapse evolution ends either in formation of a bl…
Analytical solutions for black-hole critical behaviour
Tomohiro Harada, Ashutosh Mahajan
Dynamical Einstein cluster is a spherical self-gravitating system of counterrotating particles, which may expand, oscillate and collapse. This system exhibits critical behaviour in…
Self-similar cosmological solutions with dark energy. II: black holes, naked singularities and wormholes
Hideki Maeda, Tomohiro Harada, B. J. Carr
We use a combination of numerical and analytical methods, exploiting the equations derived in a preceding paper, to classify all spherically symmetric self-similar solutions which…
Self-similar cosmological solutions with dark energy. I: formulation and asymptotic analysis
Tomohiro Harada, Hideki Maeda, B. J. Carr
Based on the asymptotic analysis of ordinary differential equations, we classify all spherically symmetric self-similar solutions to the Einstein equations which are asymptotically…