Results 61 to 70 of about 22,622 (206)
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
Rotating traversable wormholes in AdS
In this work we explore the effect of rotation in the size of a traversable wormhole obtained via a double trace boundary deformation. We find that at fixed temperature the size of the wormhole increases with the angular momentum J/M ℓ.
Elena Caceres +2 more
doaj +1 more source
Astrometric Image Centroid Displacements due to Gravitational Microlensing by the Ellis Wormhole
Continuing work initiated in an earlier publication (Abe, ApJ, 725 (2010) 787), we study the gravitational microlensing effects of the Ellis wormhole in the weak-field limit.
Abe +21 more
core +1 more source
Stable Dyonic Thin-Shell Wormholes in Low-Energy String Theory [PDF]
Considerable attention has been devoted to the wormhole physics in the past 30 years by exploring the possibilities of finding traversable wormholes without the need of exotic matter.
Jusufi, Kimet, Övgün, Ali
core +3 more sources
Wormhole Structures in Logarithmic-Corrected $R^2$ Gravity
This paper is devoted to find the feasible shape functions for the construction of static wormhole geometry in the frame work of logarithmic-corrected $R^2$ gravity model.
Fayyaz, I., Shamir, M. Farasat
core +1 more source
A New Padé Approach to Modeling Wormholes in Dekel‐Zhao Dark Matter Halos
A matter‐first Padé strategy is introduced to build traversable wormholes from prescribed dark‐matter halos. Rational Padé fits approximately the Dekel–Zhao density and are analytically integrated to obtain a shape function that exactly reproduces the intended matter content, avoiding spurious poles of geometry‐first schemes.
Jonathan Alves Rebouças +4 more
wiley +1 more source
Black Hole as a Wormhole Factory
On general grounds, one may argue that a black hole stops radiation at the Planck mass, where the radiated energy is comparable to the black hole's mass.
Kim, Sung-Won, Park, Mu-In
core +2 more sources
Estimating saturated hydraulic conductivity of soil samples from Kansas mesonet database
Abstract In soil physics, saturated hydraulic conductivity, Ksat${{K}_{{\mathrm{sat}}}}$, is a key soil hydraulic parameter governing the movement of water and solutes, with broad implications for transport processes under variably saturated conditions. Its accurate estimation, however, is challenging and requires precise characterization of pore space.
Behzad Ghanbarian, Andres Patrignani
wiley +1 more source
The paper has been withdrawn by the author, due to a fatal error. A horse stumbles that has four legs.
openaire +2 more sources
Abstract We investigate how mineral dissolution reshapes flow pathways and solute transport in three‐dimensional discrete fracture networks using a computationally efficient graph‐based reactive transport model. The DFNs are inspired by field‐site observations of fractured carbonate and represent realistic connectivity and structural heterogeneity ...
Jeffrey D. Hyman +3 more
wiley +1 more source

