Výsledky vyhledávání - "Veselý, K."

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Chaos in a modified Henon-Heiles system describing geodesics in gravitational waves

Autor: Vesely, K., Podolsky, J.

Publikováno v: Phys.Lett. A271 (2000) 368-376

A Hamiltonian system with a modified Henon-Heiles potential is investigated. This describes the motion of free test particles in vacuum gravitational pp-wave spacetimes with both quadratic ("homogeneous") and cubic ("non-homogeneous") terms in the st

Externí odkaz: http://arxiv.org/abs/gr-qc/0006066

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Smearing of chaos in sandwich pp-waves

Autor: Podolsky, J., Vesely, K.

Publikováno v: Class.Quant.Grav. 16 (1999) 3599-3618

Recent results demonstrating the chaotic behavior of geodesics in non-homogeneous vacuum pp-wave solutions are generalized. Here we concentrate on motion in non-homogeneous sandwich pp-waves and show that chaos smears as the duration of these gravita

Externí odkaz: http://arxiv.org/abs/gr-qc/9909012

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Chaotic motion in pp-wave spacetimes

Autor: Podolsky, J., Vesely, K.

Publikováno v: Class.Quant.Grav. 15 (1998) 3505-3521

We investigate geodesics in non-homogeneous vacuum pp-wave solutions and demonstrate their chaotic behavior by rigorous analytic and numerical methods. For the particular class of solutions considered, distinct "outcomes" (channels to infinity) are i

Externí odkaz: http://arxiv.org/abs/gr-qc/9809065

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Chaos in pp-wave spacetimes

Autor: Podolsky, J., Vesely, K.

Publikováno v: Phys.Rev.D58:081501,1998

We demonstrate chaotic behavior of timelike, null and spacelike geodesics in non-homogeneous vacuum pp-wave solutions. This seems to be the first known example of a chaotic motion in exact radiative spacetime.
Comment: 4 pages, revtex, 3 figures

Externí odkaz: http://arxiv.org/abs/gr-qc/9805078

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Continuous coordinates for all impulsive pp - waves

Autor: Podolsky, J., Vesely, K.

Publikováno v: Phys.Lett. A241 (1998) 145-147

We present a coordinate system for a general impulsive gravitational pp - wave in vacuum in which the metric is explicitly continuous, synchronous and "transverse". Also, it is more appropriate for investigation of particle motions.
Comment: 4 p

Externí odkaz: http://arxiv.org/abs/gr-qc/9803016

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New examples of sandwich gravitational waves and their impulsive limit

Autor: Podolsky, J., Vesely, K.

Publikováno v: Czech.J.Phys. 48 (1998) 871-878

Non-standard sandwich gravitational waves are constructed from the homogeneous pp vacuum solution and the motions of free test particles in the space-times are calculated explicitly. They demonstrate the caustic property of sandwich waves. By perform

Externí odkaz: http://arxiv.org/abs/gr-qc/9801054

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