Results 71 to 80 of about 8,712 (220)
Time and Matter, 2006 To predict the outcome of (almost) any experiment we have to assume that our spacetime is globally hyperbolic. The wormholes, if they exist, cast doubt on the validity of this assumption. At the same time, no evidence has been found so far (either observational, or theoretical) that the possibility of their existence can be safely neglected.
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Fortschritte der Physik, Volume 74, Issue 6, June 2026.ABSTRACT We present a clear, step‐by‐step method for counting degrees of freedom and identifying constraints in general field theories. This approach, grounded in the works of Einstein, Hilbert, Cartan, Kuranishi, and, more recently, Seiler, is neither Lagrangian nor Hamiltonian in nature. Instead, it applies directly to the field equations. We offer a
Lavinia Heisenberg
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Axion Wormholes in Gauged Supergravity and their String Theory Uplift [PDF]
, 2023 openEuclidean wormholes have attracted a renewed interest in Quantum Gravity as relevant saddle points in the path integral. To understand them, we still need to fully describe them from a String Theory point of view.
FIESOLI, EDOARDO
core
UniverseSpacetime wormholes are evidently an essential component of the construction of a time machine. Within the context of general relativity, such objects require, for their formation, exotic matter—matter that violates at least one of the standard energy ...
Mengqi Lu, Jiayue Yang, Robert B. Mann
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Transient Porosity During Fluid‐Mineral Interaction. Part 1: In Situ 4D Tomography
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.Abstract Fluid‐induced mineral replacement reactions play a key role in controlling porosity generation and permeability evolution in geologic systems. However, the dynamic feedback between pore structure development and fluid transport remains poorly quantified. This study investigates the spatiotemporal evolution of reaction‐induced pore space in the
Hamed Amiri +7 more
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Physical Review D, 2000 The paper has been withdrawn by the author, due to a fatal error. A horse stumbles that has four legs.
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Energy of a Charged Wormhole [PDF]
International Journal of Theoretical Physics, 2006 This paper has been removed by arXiv administrators because it overlaps gr-qc/0102077 and others. This paper also has excessive overlap with the following papers also written by the authors or their collaborators: gr-qc/0603027, gr-qc/0606022, gr-qc/0512080, gr-qc/0603108, gr-qc/0601141, gr-qc/0603063, gr-qc/0608050, gr-qc/0607095, gr-qc/0607011, gr-qc/
Saltı, Mustafa, Aydogdu, Oktay
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Water Resources Research, Volume 62, Issue 6, June 2026.Abstract Predictive models for reactive flow in fractured media often adopt single‐mineral simplifications, neglecting feedback between mineralogical heterogeneity and hydrological evolution. This study investigates the pore‐scale dynamics of fracture evolution in dual‐mineral systems characterized by contrasting mineral reactivities and morphologies ...
Heewon Jung, Sunwong Lim
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Real-Time Detection and Response to Wormhole and Sinkhole Attacks in Wireless Sensor Networks
TechnologiesWireless sensor networks have become a vital technology that is extensively applied across multiple industries, including agriculture, industrial operations, and smart cities, as well as residential smart homes and environmental monitoring systems ...
Tamara Zhukabayeva +5 more
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