Non-linear plane gravitational waves as space-time defects
نویسندگان
چکیده
منابع مشابه
Gravitational Waves: Just Plane Symmetry
We present some remarkable properties of the symmetry group for gravitational plane waves. Our main observation is that metrics with plane wave symmetry satisfy every system of generally covariant vacuum field equations except the Einstein equations. The proof uses the homothety admitted by metrics with plane wave symmetry and the scaling behavior of generally covariant field equations. We also...
متن کاملQuantization of pure gravitational plane waves
Pure gravitational plane waves are considered as a special case of spacetimes with two commuting spacelike Killing vector elds. Starting with a midisuperspace that describes this kind of spacetimes, we introduce gaugexing and symmetry conditions that remove all non-physical degrees of freedom and ensure that the classical solutions are plane waves. In this way, we arrive at a reduced model with...
متن کاملConformal geometry of gravitational plane waves
It is well known that the conformal group of a non-flat vacuum pp-wave is at most 7-dimensional. Here we explicitly determine all solutions with a 7-dimensional group in three particular families of gravitational plane waves. All of them are exact solutions in terms of elementary functions. Furthermore, it turns out that a gravitational plane wave with a 6-dimensional homothety group (larger th...
متن کاملColliding gravitational plane waves in dilaton gravity.
Collision of plane waves in dilaton gravity theories and low energy limit of string theory is considered. The formulation of the problem and some exact solutions are presented PACS: 04.20.Jb , 04.40.Nr , 04.30.Nk , 11.27.+d
متن کاملGravitational lens time delays and gravitational waves.
Using Fermat’s principle, we analyze the effects of very long wavelength gravitational waves upon the images of a gravitationally lensed quasar. We show that the lens equation in the presence of gravity waves is equivalent to that of a lens with different alignment between source, deflector, and observer in the absence of gravity waves. Contrary to a recent claim, we conclude that measurements ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2021
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-021-08862-x