Results 31 to 40 of about 2,770 (52)

Comment on 'Stability of the semiclassical Einstein equation'

, 2001
Some mathematical errors of the paper commented upon [W.-M. Suen, Phys. Rev. D 40, (1989) 315] are corrected.Comment: 3 pages, LaTeX, reprinted from Phys. Rev.
G. T. Horowitz, Hans-Jürgen Schmidt, J. Simon, V. Müller, W. M. Suen, W. M. Suen   +5 more
core   +1 more source

Complementary wave solutions for the long-short wave resonance model via the extended trial equation method and the generalized Kudryashov method

Open Physics, 2018
In this paper the nonlinear long-short (LS) wave resonance model is analyzed through a new perspective. We obtain the classification of exact solutions by making use of the complete discrimination system for the trial equation method and through the ...
Cimpoiasu Rodica, Pauna Alina Streche
doaj   +1 more source

Continuous coordinates for all impulsive pp - waves [PDF]

, 1998
We present a coordinate system for a general impulsive gravitational pp - wave in vacuum in which the metric is explicitly continuous, synchronous and "transverse".
Aichelburg, Balasin, Balasin, Balasin, D'Eath, D'Eath, Ferrari, Griffiths, J. Podolský, K. Veselý, Kramer, Loustó, Penrose, Podolský, Rindler   +14 more
core   +2 more sources

Bilinearization and new multi-soliton solutions of mKdV hierarchy with time-dependent coefficients

Open Physics, 2016
In this paper, Hirota’s bilinear method is extended to a new modified Kortweg–de Vries (mKdV) hierarchy with time-dependent coefficients. To begin with, we give a bilinear form of the mKdV hierarchy. Based on the bilinear form, we then obtain one-soliton,
Zhang Sheng, Zhang Luyao
doaj   +1 more source

Kerr-AdS and Kerr-dS solutions revisited [PDF]

, 1999
We reconsider the Kerr metric with cosmological term $\Lambda$ imposing the condition that the angular velocity $\omega$ of the dragging of the inertial frames vanishes at spatial boundaries.
Agnese, A. G., La Camera, M.
core   +3 more sources

A note on cosmological Levi-Civita spacetimes in higher dimensions

, 2009
We find a class of solutions to cosmological Einstein equations that generalizes the four dimensional cylindrically symmetric spacetimes to higher dimensions.
Bayram Tekin, H. Stephani, Özgür Sarıoğlu   +2 more
core   +1 more source

Non-Singular Charged Black Hole Solution for Non-Linear Source [PDF]

, 1999
A non-singular exact black hole solution in General Relativity is presented. The source is a non-linear electromagnetic field, which reduces to the Maxwell theory for weak field.
A. A. Tseytlin, A. Borde, A. Borde, Alberto Garcia, C. Barrabès, Eloy Ayon-Beato, H. P. Oliveira, H. Salazar, J. H. Horne, M. Cvetic, M. Mars, S. Chandrasekhar, S. W. Hawking   +12 more
core   +2 more sources

On a static charged fluid around a magnetized mass

, 2008
We show that any magnetostatic axially symmetric solution of the Einstein-Maxwell equations can be endowed with a specific charged fluid source of the Polanco et al type via a simple procedure requiring the knowledge of exclusively the magnetostatic seed
Cabrera-Munguia, I., Manko, V. S.
core   +1 more source

Note on cosmology of dimensionally reduced gravitational Chern-Simons

, 2009
We present cosmological solutions from the dimensionally reduced Chern-Simons term and obtain the smooth transition solution from the decelerated phase (AdS) to the accelerated phase (dS).Comment: 3 pages, minor changes, references added, version to ...
Edwin J. Son, R. Jackiw, S. Deser, Wontae Kim   +3 more
core   +1 more source

Our World as an Expanding Shell

, 1998
In the model where the Universe is considered as a thin shell expanding in 5-dimensional hyper-space there is a possibility to have just one scale for a particle theory corresponding to the Universe thickness.
Barnaveli A., Barnaveli A., Barnaveli A., Beciu M. I., Gogberashvili M., Gogberashvili M., Gogberashvili M., Gogberashvili M., in, Israel W., Israel W., M Gogberashvili, Misner C. W.   +12 more
core   +1 more source