activity
20212026
most citedGravitational Waves and Conformal Time Transformations

11 citations · 19 across the 6 of their papers we have counts for

collaborators

7 papers

gr-qc2026

Gravitational Memory: an approximate description

Q. -L. Zhao, P. -M. Zhang, M. Elbistan +2

Plane gravitational waves play a role both in relativistic and in non-relativisitic physics, highlighted by two different mass parameters. The large-distance behaviour of a sandwic…

gr-qc2026

Approximate Models for Gravitational Memory

Q-L Zhao, P. -M. Zhang, M. Elbistan +1

The large-distance approximation of a sandwich gravitational wave by a continuous but not necessarily smooth profile provides us with an approximate analytic description of particl…

gr-qc2024

Gravitational wave memory: further examples

P. -M. Zhang, Q. -L. Zhao, M. Elbistan +1

Ehlers and Kundt [1] argued in favor of the velocity effect: particles initally at rest hit by a burst of gravitational waves should fly apart with constant velocity after the wave…

gr-qc2024★ 1 cited

Displacement memory for flyby

P. -M. Zhang, Q. -L. Zhao, J. Balog +1

Zel'dovich and Polnarev, in their seminal paper [1] suggested that a gravitational wave generated by flyby would merely displace the particles. We confirm their prediction numerica…

gr-qc2024★ 2 cited

Conformally related vacuum gravitational waves, and their symmetries

Q. L. Zhao, P. M. Zhang, P. A. Horvathy

A special conformal transformation which carries a vacuum gravitational wave into another vacuum one is built by using Möbius-redefined time. It can either transform a globally def…

gr-qc2023★ 5 cited

MultiCarroll dynamics

P. -M. Zhang, H-X. Zeng, P. A. Horvathy

Unlike a single Carroll particle, a multiparticle Carroll system can move under suitable conditions, as we demonstrate it explicitly for two particles with a momentum-dependent int…

gr-qc2021★ 11 cited

Gravitational Waves and Conformal Time Transformations

P. -M. Zhang, Q. -L. Zhao, P. A. Horvathy

Recent interest in the "memory effect" prompted us to revisit the relation of gravitational aves and oscillators. 50 years ago Niederer [1] found that an isotropic harmonic oscilla…