Yayınlanmış 28 Ekim 2025
| Sürüm v1
Dergi makalesi
Açık
Gravitational memory effects in Tachyon gravity
Oluşturanlar
- 1. Faculty of Physics, University of Tabriz, Tabriz, 51666-16471, Iran
- 2. Leuven Gravity Institute, KU Leuven, Celestijnenlaan 200D box 2415, Leuven, 3001, Belgium
Açıklama
In this paper, we explore how a massless Tachyon field, when non-minimally coupled to gravity, affects gravitational memory, soft theorems, and symmetries near null infinity. We set up the model using both the Jordan and Einstein frames, work out the equations of motion and study the behavior of fields at large distances with the Bondi-Sachs gauge. The Tachyon adds a "breathing" polarization mode to the gravitational radiation, which modifies the Bondi mass loss formula and leaves a trace in the displacement memory effect. We also derived the leading and subleading soft factors, involving the radiation of a soft graviton or a soft scalar.
Dosyalar
13130_2025_Article_27524_a.pdf
Dosyalar
(339.5 kB)
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