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Gravitational waves in modified teleparallel theories of gravity
Habib Abedi1, Salvatore Capozziello2,3,4,5
11Department of Physics, University of Tehran, North Kargar Ave, Tehran, Iran.
The European Physical Journal. C, Particles and Fields
|June 26, 2018
Summary
This study explores gravitational waves within teleparallel gravity theories. When a boundary term is minimally coupled, these waves exhibit polarization modes identical to those in General Relativity.
Area of Science:
- Cosmology and astrophysics
- Theoretical physics
- Gravitational wave research
Background:
- Teleparallel theory of gravity and its modifications are well-researched.
- Gravitational waves within teleparallel frameworks remain under-explored.
- Existing research provides a foundation for investigating new polarizations.
Purpose of the Study:
- To classify possible new gravitational wave polarizations in general teleparallel gravity theories.
- To generalize existing results on gravitational waves in modified gravity.
- To analyze the impact of torsion scalar, boundary term, and scalar fields on gravitational waves.
Main Methods:
- Analysis of gravitational waves in general teleparallel gravity theories.
- Inclusion of torsion scalar (T), boundary term (B), and a scalar field.
- Generalization of polarization modes based on theoretical frameworks.
Main Results:
- Gravitational waves in general teleparallel gravity theories were investigated.
- The study classified possible new polarization modes.
- It was shown that specific coupling conditions lead to standard General Relativity polarization modes.
Conclusions:
- The inclusion of a boundary term minimally coupled to the torsion scalar and scalar field results in gravitational waves with the same polarization modes as General Relativity.
- This finding contributes to understanding gravitational phenomena in modified gravity theories.
- Further research can explore deviations from General Relativity in other teleparallel gravity scenarios.
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