Results 131 to 140 of about 28,658 (246)
Replica Wormholes and Quantum Hair
Fortschritte der Physik, Volume 74, Issue 1, January 2026.Abstract The recent applications of Euclidean path integrals to the black hole information problem are discussed. In calculations with replica wormholes as the next‐to‐leading order correction to the Gibbons–Hawking saddlepoint, the radiation density matrix approaches a pure state at late times, following the Page curve.
Xavier Calmet, Stephen D. H. Hsu
wiley +1 more source
Stability of the Regular Hayward Thin-Shell Wormholes
Advances in High Energy Physics, 2016 The aim of this paper is to construct regular Hayward thin-shell wormholes and analyze their stability. We adopt Israel formalism to calculate surface stresses of the shell and check the null and weak energy conditions for the constructed wormholes.
M. Sharif, Saadia Mumtaz
doaj +1 more source
Density matrices in quantum gravity
SciPost Physics, 2020 We study density matrices in quantum gravity, focusing on topology change. We argue that the inclusion of bra-ket wormholes in the gravity path integral is not a free choice, but is dictated by the specification of a global state in the multi-universe
Tarek Anous, Jorrit Kruthoff, Raghu Mahajan
doaj +1 more source
Wormholes versus black holes: quasinormal ringing at early and late times
, 2016 Recently it has been argued that the phantom thin-shell wormholes matched with the Schwarzschild space-time near the Schwarzschild radius ring like Schwarzschild black holes at early times, but differently at late times (arXiv:1602.07309).
Konoplya, R. A., Zhidenko, A.
core +1 more source
Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.The mesoporous silica (MPS) modified with organic ligands has been effectively employed since last decade as a nonconventional, highly efficient, and selective adsorbent for the removing of heavy metal ions (HMIs) from their aqueous media. Therefore, this research paper is focused on reviewing various research works carried out on the use of ligand ...
Shah Hussain +6 more
wiley +1 more source
Advanced Science, Volume 12, Issue 47, December 18, 2025.The hydrolysis rate matching strategy, crystallization rate matching strategy of the titanium and silicon sources, dissolution‐recrystallization strategy in the synthesis process can be designed to regulate the microenvironment of active centers to design TS‐1 enriched in Ti active species.
Yan Xue +9 more
wiley +1 more source
Traversable Schwarzschild-like wormholes
European Physical Journal C: Particles and Fields, 2017 In this paper we study relativistic static traversable wormhole solutions which are a slight generalization of Schwarzschild wormholes. In order to do this we assume a shape function with a linear dependence on the radial coordinate r.
Mauricio Cataldo +2 more
doaj +1 more source
Defect Wormhole: A Traversable Wormhole Without Exotic Matter
Acta Physica Polonica B, 2023 We present a traversable-wormhole solution of the gravitational field equation of general relativity without need of exotic matter (exotic matter can, for example, have negative energy density and vanishing isotropic pressure). Instead of exotic matter, the solution relies on a 3-dimensional "spacetime defect" characterized by a locally vanishing ...
openaire +3 more sources
Interstellar Migration, the Population ‘Problem’ and the Climate Emergency
Critical Quarterly, Volume 68, Issue 1, Page 103-119, April 2026.
Anna Hartnell
wiley +1 more source
Gels for CO2 geo‐storage and conformance control: A systemic review of behavior and performance
Deep Underground Science and Engineering, Volume 4, Issue 4, Page 612-637, December 2025.This review provides a systemic evaluation of potential sealants used in CO2 subsurface storage practices. Critical analyses of how external factors like CO2, pH, brine salinity and hardness, rock mineralogy, pressure, temperature, and injectivity could affect the performance of different sealants are provided. Abstract Carbon capture and storage (CCS)
Funsho Afolabi +6 more
wiley +1 more source