Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Hiroshi Kozaki"'
Publikováno v:
The Astrophysical Journal. 655:691-703
The distance-redshift relation determined by means of gravitational waves in the clumpy universe is simulated numerically by taking into account the effects of gravitational lensing. It is assumed that all of the matter in the universe takes the form
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6eaca671d39d3e1902f7008363ff6af8
https://doi.org/10.1086/510011
https://doi.org/10.1086/510011
Publikováno v:
Physical Review D. 91
We study the dynamics of the Nambu-Goto membranes with cohomogeneity one symmetry, i.e., the membranes whose trajectories are foliated by homogeneous surfaces. It is shown that the equation of motion reduces to a geodesic equation on a certain manifo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb616632e4772fe85d67a45a057e7fbd
https://doi.org/10.1103/physrevd.91.025007
https://doi.org/10.1103/physrevd.91.025007
Publikováno v:
Proceedings of Black Holes in General Relativity and String Theory — PoS(BHs, GR and Strings).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4e8da1bf22cf94d1e8e9e507a35bb4d
https://doi.org/10.22323/1.075.0009
https://doi.org/10.22323/1.075.0009
We study the integrability of the equations of motion for the Nambu-Goto strings with a cohomogeneity-one symmetry in Minkowski spacetime. A cohomogeneity-one string has a world surface which is tangent to a Killing vector field. By virtue of the Kil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b61fd39fe67ba12b73638a9bed0750e2
http://arxiv.org/abs/0907.2273
http://arxiv.org/abs/0907.2273
Publikováno v:
The Eleventh Marcel Grossmann Meeting.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69c708460e5cde91f96aec21357dc284
https://doi.org/10.1142/9789812834300_0239
https://doi.org/10.1142/9789812834300_0239
Publikováno v:
Physical Review D. 77
The equation of motion of an extended object in spacetime reduces to an ordinary differential equation in the presence of symmetry. By properly defining the symmetry with the notion of cohomogeneity, we discuss the method for classifying all these ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b0fe5015eba0fd86d5f51fce17860d4
https://doi.org/10.1103/physrevd.77.125003
https://doi.org/10.1103/physrevd.77.125003
Stationary rotating strings can be viewed as geodesic motions in appropriate metrics on a two-dimensional space. We obtain all solutions describing stationary rotating strings in flat spacetime as an application. These rotating strings have infinite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30d8f6784db8f1621f8a00192c21bf1c
http://arxiv.org/abs/0803.4072
http://arxiv.org/abs/0803.4072
We consider the metric perturbations around a stationary rotating Nambu-Goto string in Minkowski spacetime. By solving the linearized Einstein equations, we study the effects of azimuthal frame-dragging around the rotation axis and linear frame-dragg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6b67d3adc0ad70b1001d4d9e9d99911
If expanding and contracting regions coexist in the universe, the speed of the cosmic volume expansion can be accelerated. We construct simple inhomogeneous dust-filled universe models in which the speed of the cosmic volume expansion is accelerated
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::745c9afaddfcfa8b4b5bfca5fdcf950f
http://arxiv.org/abs/gr-qc/0605120
http://arxiv.org/abs/gr-qc/0605120
Autor:
Hiroshi Kozaki, Hideki Ishihara
We define the cohomogeneity one string, string with continuous symmetries, as its world surface is tangent to a Killing vector field of a target space. We classify the Killing vector fields by an equivalence relation using isometries of the target sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e0274f896a7b5dcda7f2783c6848a6c
http://arxiv.org/abs/gr-qc/0506018
http://arxiv.org/abs/gr-qc/0506018