Results 101 to 110 of about 28,658 (246)
Radial perturbations of charged wormholes
Physics Letters BEllis-Bronnikov wormholes suffer from an unstable radial mode. Here we investigate the evolution of the unstable mode(s) for charged wormholes. We show that the instability remains in the presence of charge, but exhibits a very fast decrease to zero.
Jose Luis Blázquez-Salcedo +4 more
doaj +1 more source
Thin-shell wormholes in de Rham–Gabadadze–Tolley massive gravity
European Physical Journal C: Particles and Fields, 2020 In this work, we study the thin-shell wormholes in dRGT massive gravity. In order to glue two bulks of the spacetime geometry, we first derive junction conditions of the dRGT spacetime.
Takol Tangphati +3 more
doaj +1 more source
Mean Field Approach to the Giant Wormhole Problem
, 1992 We introduce a gaussian probability density for the space-time distribution of wormholes, thus taking effectively into account wormhole interaction. Using a mean-field approximation for the free energy, we show that giant wormholes are probabilistically ...
Gamba, A., Kolokolov, I., Martellini, M.
core +1 more source
Yukawa–Casimir wormholes [PDF]
The European Physical Journal C, 2021 AbstractIn this work, we consider a Yukawa modification of the Casimir wormhole. With the help of an Equation of State, we impose Zero Tidal Forces. We will examine two different approaches: in a first approach, we will fix the form of the shape function of the Casimir wormholes modified by a Yukawa term in three different ways and finally a ...
openaire +3 more sources
Engineering Reports, Volume 8, Issue 4, April 2026.Rat swarm position update mechanism in HRSA‐RSO, illustrating the collective exploration behavior around the prey target (A*, B*). ABSTRACT The permutation flow shop scheduling problem (PFSSP) is a classical NP‐hard problem that aims to determine an optimal job sequence across machines to minimize makespan.
Mourad Mzili +5 more
wiley +1 more source
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Dynamic thin-shell black-bounce traversable wormholes [PDF]
, 2020 Based on the recently introduced black-bounce spacetimes, we shall consider the construction of the related spherically symmetric thin-shell traversable wormholes within the context of standard general relativity.
F. Lobo, Alex Simpson, M. Visser
semanticscholar +1 more source
The Dynamics of Reading Genre Fiction: Researching and Teaching Interpretive Practices
Reading Research Quarterly, Volume 61, Issue 2, April/May/June 2026.Conceptual model positioning genre fiction as a site for studying how narrative form organizes reader interpretation, identifying four dynamics—iterability, narrative interest, serialization, and spectacle—to guide empirical research on reading processes.
Robert Jean LeBlanc, Amy Stornaiuolo
wiley +1 more source
Existence of non-exotic traversable wormholes in squared trace extended gravity theory
Nuclear Physics BAn extended gravity theory is used to explore the possibility of non-exotic matter traversable wormholes. In the extended gravity theory, additional terms linear and quadratic in the trace of the energy momentum tensor are considered in the Einstein ...
S.K. Tripathy +4 more
doaj +1 more source
Giant wormholes in ghost-free bigravity theory
, 2015 We study Lorentzian wormholes in the ghost-free bigravity theory described by two metrics, g and f. Wormholes can exist if only the null energy condition is violated, which happens naturally in the bigravity theory since the graviton energy-momentum ...
Sushkov, Sergey V., Volkov, Mikhail S.
core +3 more sources