Results 51 to 60 of about 22,622 (206)

Dependence of Mineral Dissolution Rates on Two‐Phase Hydrodynamics in Single Pores

open access: yesGeophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Multiphase flow and mineral reactions co‐exist in many subsurface systems, and thus elucidating and quantifying the impacts of multiphase flow on mineral reaction rates are crucial. Our study established a benchmark experiment on calcite dissolution in cylindrical pores in slug flow, and performed a series of simulations using a validated pore‐
Xin Wang, Hang Deng
wiley   +1 more source

Wormholes and entanglement [PDF]

open access: yesClassical and Quantum Gravity, 2014
Maldacena and Susskind have proposed a correspondence between wormholes and entanglement, dubbed ER=EPR. We study this in the context of three-dimensional topological quantum field theory (TQFT), where we show that the formation of a wormhole is the same process as creating a particle–antiparticle pair.
Baez, John C, Vicary, Jamie
openaire   +6 more sources

Advances in Solid‐Phase Processing Techniques: Innovations, Applications, and Future Perspectives

open access: yesAdvanced Materials Technologies, Volume 11, Issue 9, 6 May 2026.
Based on practical manufacturing challenges, this review examines advanced solid‐phase processing techniques that overcome the inherent limitations of conventional melting‐based and traditional solid‐phase manufacturing, enabling the production of higher‐performance components at reduced cost through process innovation and improved supply‐chain ...
Tianhao Wang
wiley   +1 more source

Notes on wormhole existence in scalar-tensor and F(R) gravity

open access: yes, 2010
Some recent papers have claimed the existence of static, spherically symmetric wormhole solutions to gravitational field equations in the absence of ghost (or phantom) degrees of freedom.
A. A. Starobinsky   +38 more
core   +1 more source

A Negative Mode About Euclidean Wormhole [PDF]

open access: yes, 1996
Wormholes -- solutions to the euclidean Einstein equations with non-trivial topology -- are usually assumed to make real contributions to amplitudes in quantum gravity.
Rubakov, V. A., Shvedov, O. Yu.
core   +2 more sources

A Novel Hybrid Recruit Simulated Annealing and Rat Swarm Optimization Algorithm for Permutation Flow Shop Scheduling

open access: yesEngineering 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

Yukawa–Casimir wormholes [PDF]

open access: yesThe 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

Rotation effects on the graphene wormhole energy levels

open access: yesNuclear Physics B
In this work, we are interested in how spinning effects influence the electronic properties of the graphene wormhole. For this purpose, we have described the graphene by wormhole background based on the model developed by González and his co-workers.
G.Q. Garcia   +3 more
doaj   +1 more source

Deflection Angle of Photons through Dark Matter by Black Holes and Wormholes Using Gauss–Bonnet Theorem

open access: yesUniverse, 2019
In this research, we used the Gibbons–Werner method (Gauss–Bonnet theorem) on the optical geometry of a black hole and wormhole, extending the calculation of weak gravitational lensing within the Maxwell’s fish eye-like profile and dark-
Ali Övgün
doaj   +1 more source

Exactly Soluble Quantum Wormhole in Two Dimensions

open access: yes, 2004
We are presenting a quantum traversable wormhole in an exactly soluble two-dimensional model. This is different from previous works since the exotic negative energy that supports the wormhole is generated from the quantization of classical energy ...
Edwin J. Son   +5 more
core   +1 more source

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