Results 11 to 20 of about 1,805 (78)
Cosmic Censorship for Gowdy Spacetimes. [PDF]
Ringström H.
europepmc +2 more sources
Resurgence of a de Sitter Glauber‐Sudarshan State: Nodal Diagrams and Borel Resummation
Abstract It is shown in this article that an explicit construction of a four‐dimensional de Sitter space may be performed using a diagrammatic approach via nodal diagrams emanating from the path integral representation of the Glauber‐Sudarshan state. Sum of these diagrams typically leads to an asymptotic series of Gevrey kind which can then be Borel ...
Suddhasattwa Brahma +6 more
wiley +1 more source
Some Comments on Gravitational Entropy and the Inverse Mean Curvature Flow [PDF]
The Geroch-Wald-Jang-Huisken-Ilmanen approach to the positive energy problem to may be extended to give a negative lower bound for the mass of asymptotically Anti-de-Sitter spacetimes containing horizons with exotic topologies having ends or infinities ...
G W Gibbons +16 more
core +2 more sources
Generalised hyperbolicity in spacetimes with string-like singularities
In this paper we present well-posedness results of the wave equation in $H^{1}$ for spacetimes that contain string-like singularities. These results extend a framework able to characterise gravitational singularities as obstruction to the dynamics of ...
Sanchez, Yafet Sanchez +1 more
core +1 more source
Infinity in string cosmology: A review through open problems [PDF]
We review recent developments in the field of string cosmology with particular emphasis on open problems having to do mainly with geometric asymptotics and singularities.
Antoniadis, Ignatios, Cotsakis, Spiros
core +2 more sources
Visible borders of spacetime generated by high-energy collisions
Several years ago, two of the present authors proposed the concept of the border of spacetime as a generalization of spacetime singularities. Visible borders of spacetime, which replace naked singularities of classical theory, are not only necessary for ...
Harada, Tomohiro +2 more
core +1 more source
ABSTRACT Introduction The popularization of blockchain‐based applications made evident a critical challenge, namely the inherent isolation of these decentralized systems, akin to the disconnected and technologically diverse local area networks of the 1970s. This lack of interoperability limits the potential for widespread adoption and innovation in the
Christian Delgado‐von‐Eitzen +3 more
wiley +1 more source
Singularity in Gravitational Collapse of Plane Symmetric Charged Vaidya Spacetime
We study the final outcome of gravitational collapse resulting from the plane symmetric charged Vaidya spacetime. Using the field equations, we show that the weak energy condition is always satisfied by collapsing fluid.
AISHA SIDDIQA +9 more
core +1 more source
Further to results in [9], pointing out the role of initial density and velocity distributions towards determining the final outcome of spherical dust collapse, the causal structure of singularity is examined here in terms of evolution of the apparent ...
Bondi H +17 more
core +1 more source
UEG Week 2023 Oral Presentations
United European Gastroenterology Journal, Volume 11, Issue S8, Page 9-200, October 2023.
wiley +1 more source

