Results 81 to 90 of about 35,096 (197)
Complex Riemannian Spacetime and Singularity-Free Black Holes and Cosmology
AxiomsAn approach is presented to address singularities in general relativity using a complex Riemannian spacetime extension. We demonstrate how this method can be applied to both black hole and cosmological singularities, specifically focusing on the ...
John W. Moffat
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Naked Singularities in the Vaidya Spacetime [PDF]
Progress of Theoretical Physics, 1984 Summary: We investigate the property of a singularity which is formed by the spherical collapse of pure radiation from past null infinity, in terms of the congruence of null geodesics in the Vaidya spacetime. When the initial increase of mass due to the inflow of radiation is not so fast, the so-called shell-focusing singularity appears at the center ...
openaire +1 more source
When does the story end? Presence, the present and ‘the contemporary world’
The Australian Journal of Anthropology, EarlyView.Abstract We write and read ethnography in the wake of time passing: a fact that has long thrown up a host of epistemological and ethical issues for the doing of anthropology. In this essay I revisit this classic problem—the problem of the ethnographic present—asking what happens when we rethink the relationship between ‘the present’ and ‘presence’, the
Michael Edwards
wiley +1 more source
Temporal Passage in a Fragmented World
Analytic Philosophy, Volume 67, Issue 2, Page 192-198, June 2026.ABSTRACT Fragmentalism is a relatively recent and striking addition to the debate between tensed and tenseless theories of time. First introduced by Fine in “Tense and Reality,” it presents a rare instance of both a theoretically intriguing and novel theory of time.
Kyley Ewing
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Narrative formatting, chronotopic orderings, and moralization in ex‐gay stories
Journal of Linguistic Anthropology, Volume 36, Issue 1, May 2026.Abstract Formatted stories rely on spatiotemporal cues to evoke recognizability through linearity, which prescribes a particular template for meaning‐making. This article examines stories narrated by ex‐gay members of a Christian organization in Singapore and considers how chronotopes within the stories are ordered to regiment ways of feeling for ...
Vincent Pak
wiley +1 more source
Advanced Functional Materials, Volume 36, Issue 28, 7 April 2026.From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang +8 more
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Frozen firewall: generic singularity formation on an extremal horizon
Journal of High Energy PhysicsIt is known that linearized perturbations of extremal black holes result in growing curvature on the horizon. However, nonlinear perturbations typically do not evolve to extremal black holes and do not have growing curvature at late times. We show that a
Gary T. Horowitz +2 more
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Topology-changing horizons at large D as Ricci flows
Journal of High Energy Physics, 2019 The topology-changing transition between black strings and black holes localized in a Kaluza-Klein circle is investigated in an expansion in the inverse of the number of dimensions D.
Roberto Emparan, Ryotaku Suzuki
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Holographic flows from CFT to the Kasner universe
Journal of High Energy Physics, 2020 The Schwarzschild singularity is known to be classically unstable. We demonstrate a simple holographic consequence of this fact, focusing on a perturbation that is uniform in boundary space and time.
Alexander Frenkel +3 more
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A Comment on Bonnor-Steadman Closed Timelike Curves
, 2008 The existence and stability closed timelike curves in a Bonnor-Ward spacetime without torsion line singularities is shown by exhibiting particular examples.Comment: 2 pages, RevTex, minor ...
P.S. Letelier +8 more
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