Results 91 to 100 of about 22,622 (206)
Bulk view of teleportation and traversable wormholes
Journal of High Energy Physics, 2018 We construct detailed AdS2 gravity solutions describing the teleportation through a traversable wormhole sending a state from one side of the wormhole to the other.
Dongsu Bak, Chanju Kim, Sang-Heon Yi
doaj +1 more source
Light‐Harvesting Nanomaterials Based on Dyes for Energy Transfer and Amplified Biosensing
Advanced Materials, Volume 37, Issue 45, November 13, 2025.Light harvesting (LH) in plants inspires researchers to develop artificial LH nanomaterials. Here, LH nanomaterials based on organic dyes are reviewed, considering fundamental challenges on aggregation‐caused quenching, excitation energy transfer, and exciton migration length.
Andrey S. Klymchenko +2 more
wiley +1 more source
Defect Wormhole: A Traversable Wormhole Without Exotic Matter
Acta Physica Polonica B, 2023 We present a traversable-wormhole solution of the gravitational field equation of general relativity without need of exotic matter (exotic matter can, for example, have negative energy density and vanishing isotropic pressure). Instead of exotic matter, the solution relies on a 3-dimensional "spacetime defect" characterized by a locally vanishing ...
openaire +3 more sources
Hyperbolic Casimir-like wormhole
European Physical Journal C: Particles and FieldsWe present a systematic study of exact solutions for traversable wormhole geometries in a static and hyperbolic symmetric spacetime. In the conventional form of studying wormhole geometry, traversability requires the presence of exotic matter, which also
R. Avalos +3 more
doaj +1 more source
A SURVEY ON DELAY AND NEIGHBOR NODE MONITORING BASED WORMHOLE ATTACK PREVENTION AND DETECTION
ICTACT Journal on Communication Technology, 2016 In Mobile Ad-hoc Networks (MANET), network layer attacks, for example wormhole attacks, disrupt the network routing operations and can be used for data theft. Wormhole attacks are of two types: hidden and exposed wormhole. There are various mechanisms in
Sudhir T Bagade, Vijay T Raisinghani
doaj +1 more source
Nonsingular Black Holes in $f(R)$ Theories
, 2015 We study the structure of a family of static, spherically symmetric space-times generated by an anisotropic fluid and governed by a particular type of $f(R)$ theory.
Olmo, Gonzalo J., Rubiera-Garcia, D.
core +1 more source
Probing Quantum Anomalous Heat Flow Using Mid‐Circuit Measurements
Advanced Quantum Technologies, Volume 8, Issue 11, November 2025.Using IBM's prototype quantum computers with mid‐circuit measurement capabilities, researchers caught heat flowing from a colder to a hotter qubit — impossible in everyday physics. This eye‐catching reversal, driven by quantum correlations between the qubits, doubles as a stress‐test for today's noisy hardware and a blueprint for future quantum ...
Aabhaas Vineet Mallik +3 more
wiley +1 more source
The Casimir Effect in Finite-Temperature and Gravitational Scenarios
PhysicsIn this paper, we review some recent findings related to the Casimir effect. Initially, the thermal corrections to the vacuum Casimir energy density are calculated, for a quantum scalar field, whose modes propagate in the (3+1)-dimensional Euclidean ...
Valdir Barbosa Bezerra +4 more
doaj +1 more source
Quasi-Normal Modes of a Natural AdS Wormhole in Einstein-Born-Infeld Gravity
, 2018 We study the matter perturbations of a new AdS wormhole in (3+1)-dimensional Einstein-Born-Infeld gravity, called "natural wormhole", which does not require exotic matters.
Kim, Jin Young +2 more
core +1 more source
Nuclear Physics BIn this study, we investigate traversable wormholes inspired by the Kiselev framework, which extends classical black hole solutions by incorporating anisotropic fluids. These exotic fluids play a crucial role in cosmology, particularly in explaining phenomena such as the accelerated expansion of the universe.
Jureeporn Yuennan +2 more
openaire +4 more sources