Results 81 to 90 of about 5,317 (165)

Fuzzy Euclidean wormholes in de Sitter space

, 2017
We investigate Euclidean wormholes in Einstein gravity with a massless scalar field in de Sitter space. Euclidean wormholes are possible due to the analytic continuation of the time as well as complexification of fields, where we need to impose the ...
Yao-Chieh Hu, Yeom, Dong-han, Chen, Pisin, Dong-han Yeom, Pisin Chen, Hu, Yao-Chieh,   +5 more
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Lorentzian path integrals and Jackiw-Teitelboim wormholes with imaginary scalars

Journal of High Energy Physics
The Lorentzian path integral was recently used to argue that standard Euclidean axion wormholes do not dominate computations of connected AdS/CFT partition functions.
Jesse Held, Molly Kaplan, Donald Marolf, Zhencheng Wang   +3 more
doaj   +1 more source

Sculpting Spacetime: Thin Shells in Wormhole Physics

Universe
In this work, we employ the Darmois–Israel thin-shell formalism to construct both static and dynamic thin-shell configurations surrounding traversable wormholes.
Francisco S. N. Lobo
doaj   +1 more source

Firewalls at exponentially late times

Journal of High Energy Physics
We consider a version of the typical state firewall setup recently reintroduced by Stanford and Yang, who found that wormholes may create firewalls. We examine a late-time scaling limit in JT gravity in which one can resum the expansion in the number of ...
Andreas Blommaert, Chang-Han Chen, Yasunori Nomura   +2 more
doaj   +1 more source

Observational Signatures of Traversable Wormholes [PDF]

In this paper, we study the observational signatures of traversable Simpson-Visser wormholes illuminated by luminous celestial spheres and orbiting hot spots. We demonstrate that when light sources and observers are on the same side of the wormholes, the
Wang, Peng, Cheng, Lang, Chen, Yiqian, Yang, Haitang   +3 more
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Traversable Wormhole Solutions through Decoupling Approach in Rastall Theory

East European Journal of Physics
This paper explores the construction of traversable wormhole solutions in the context of Rastall’s gravity using the extended gravitational decoupling method.
Muhammad Sharif, Malick Sallah, Tayyab Naseer   +2 more
doaj   +1 more source

Stable wormholes in conformal gravity

We present a class of Lorentzian traversable wormholes in conformal gravity, constructed via Weyl rescaling of Minkowski spacetime. As a result, these wormholes are solutions of every theory of gravity that is both conformally invariant and admits ...
Modesto, Leonardo, Sanna, Andrea P., Cadoni, Mariano, Pitzalis, Mirko   +3 more
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Semiclassical wormholes

, 2020
Smooth-throat wormholes are treated as possessing quantum fluctuation energy with a scalar massive field as its source. The heat kernel coefficients of the Laplace operator are calculated in the background of the arbitrary-profile throat wormhole with ...
Khusnutdinov N.
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Kiselev-inspired wormholes

Nuclear Physics B
In this study, we investigate traversable wormholes inspired by the Kiselev framework, which extends classical black hole solutions by incorporating anisotropic fluids.
Jureeporn Yuennan, Piyachat Panyasiripan, Phongpichit Channuie   +2 more
doaj   +1 more source

Brans Wormholes [PDF]

, 1997
It is shown that three of the four Brans solutions of classes I-IV admit wormhole geometry. Two-way traversable wormholes in the Brans-Dicke theory are allowed not only for the negative values of the coupling parameter omega ...
Islam, Anwarul, Nandi, Kamal K., Evans, James C.   +2 more
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