Results 11 to 20 of about 1,805 (78)

Resurgence of a de Sitter Glauber‐Sudarshan State: Nodal Diagrams and Borel Resummation

open access: yesFortschritte der Physik, Volume 71, Issue 12, December 2023., 2023
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]

open access: yes, 1998
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

open access: yes, 2016
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]

open access: yes, 2016
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

open access: yes, 2010
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

Bridging the Gap: Achieving Seamless Interoperability Between Ethereum‐Based Blockchains Using Inter‐Blockchain Communication Protocols

open access: yesSoftware: Practice and Experience, Volume 55, Issue 11, Page 1749-1772, November 2025.
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

open access: yes, 2010
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

The final fate of spherical inhomogeneous dust collapse II: Initial data and causal structure of singularity

open access: yes, 1996
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

open access: yes, 2023
United European Gastroenterology Journal, Volume 11, Issue S8, Page 9-200, October 2023.
wiley   +1 more source

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