Results 91 to 100 of about 28,658 (246)

Quadrupole Perturbations of Slowly Spinning Ellis–Bronnikov Wormholes

Universe
We study the axial and polar perturbations of slowly rotating Ellis–Bronnikov wormholes in General Relativity, applying a perturbative double expansion.
Bahareh Azad, Jose Luis Blázquez-Salcedo, Fech Scen Khoo, Jutta Kunz, Francisco Navarro-Lérida   +4 more
doaj   +1 more source

On the properties of stationary configurations of a rotating self-gravitating ideal fluid with a vortex gravitational field [PDF]

Известия Саратовского университета. Новая серия: Физика
Background and Objectives: Within the framework of Einstein’s general-relativistic theory of gravity, that is, the general theory of relativity (GR), the properties of stationary distributions of a self-gravitating rotating continuous medium in the
Krechet, Vladimir G., Oshurko, Vadim Borisovich, Kisser, Alexey Eduardovich   +2 more
doaj   +1 more source

Traversable Wormholes and Black Hole Complementarity

, 1994
Black hole complementarity is incompatible with the existence of traversable wormholes. In fact, traversable wormholes cause problems for any theory where information comes out in the Hawking radiation.Comment: 4 pages, CALT-68 ...
Daniel Gottesman, L. Susskind, L. Susskind, V. Frolov, Y. Aharonov   +4 more
core   +1 more source

Negative modes in the four-dimensional stringy wormholes [PDF]

, 1997
We study the Giddings-Strominger wormholes in string theories. We found negative modes among O(4)-symmetric fluctuations about the non-singular wormhole background.
A. A. Tseytlin, A. Hosoya, B. Grinstein, E. Witten, G. V. Lavrelashvili, G. W. Gibbons, G. W. Giddings, H. Fukutaka, H. W. Lee, J. Y. Kim, J. Y. Kim, Jin Young Kim, K. Lee, K. Yosida, M. Abramowitz, O. J. Kwon, O. J. Kwon, R. C. Myers, S. Chandrasekhar, S. Coleman, S. Giddings, S. J. Rey, T. Tanaka, V. A. Rubakov, V. Balasubramanian, Y. S. Myung   +25 more
core   +4 more sources

Weak deflection angle of black-bounce traversable wormholes usingGauss–Bonnet theorem in the dark matter medium [PDF]

Turkish Journal of Physics, 2020
In this paper, we first use the optical metrics of black-bounce traversable wormholes to calculate the Gaussiancurvature. Then we use the Gauss–Bonnet theorem to obtain the weak deflection angle of light from the black-bouncetraversable wormholes.
A. Övgün
semanticscholar   +1 more source

Wormholes and entanglement [PDF]

Classical 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

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

Geophysical 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

Tides and Energy Conditions in Einstein–Gauss–Bonnet Thin-Shell Wormholes

Universe
In this article we study spherical thin-shell wormholes in five-dimensional Einstein–Gauss–Bonnet gravity. We show that configurations supported by non-exotic matter, that is matter satisfying the weak energy condition, are possible at the same time that
Ernesto F. Eiroa, Emilio Rubín de Celis, Claudio Simeone   +2 more
doaj   +1 more source

The Stability of Asymmetric Cylindrical Thin-Shell Wormholes

, 2018
In continuation of a preceding work on introducing asymmetric thin-shell wormholes as an emerging class of traversable wormholes within the context, this time cylindrically symmetric spacetimes are exploited to construct such wormholes.
Forghani, S. Danial, Halilsoy, M., Mazharimousavi, S. Habib   +2 more
core   +1 more source

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

Advanced 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