Inflation as an amplifier: The case of Lorentz violation
Modified gravity theories are supposed to incorporate low-energy quantum-gravity effects and, at the same time, they could shed light into the dark matter and dark energy problems. Here we study a particular modification of general relativity where local Lorentz invariance is spontaneously broken an...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_24700010_v96_n4_p_Bonder |
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todo:paper_24700010_v96_n4_p_Bonder2023-10-03T16:42:07Z Inflation as an amplifier: The case of Lorentz violation Bonder, Y. León, G. Modified gravity theories are supposed to incorporate low-energy quantum-gravity effects and, at the same time, they could shed light into the dark matter and dark energy problems. Here we study a particular modification of general relativity where local Lorentz invariance is spontaneously broken and whose physical effects, despite a decade-long effort, were unknown. We show that, during inflation, this modification produces anisotropies that would generate measurable effects on the cosmic microwave background. Then, by using empirical constraints on the B-mode polarization spectrum, we can estimate that the "coefficient" components absolute value have to be smaller than 10-43. This is a remarkably strong limit; in fact, it is 29 orders of magnitude better than the best constraints on similar coefficients. Thus, we propose that inflation could stringently test other modified gravity theories. © 2017 American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_24700010_v96_n4_p_Bonder |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
Modified gravity theories are supposed to incorporate low-energy quantum-gravity effects and, at the same time, they could shed light into the dark matter and dark energy problems. Here we study a particular modification of general relativity where local Lorentz invariance is spontaneously broken and whose physical effects, despite a decade-long effort, were unknown. We show that, during inflation, this modification produces anisotropies that would generate measurable effects on the cosmic microwave background. Then, by using empirical constraints on the B-mode polarization spectrum, we can estimate that the "coefficient" components absolute value have to be smaller than 10-43. This is a remarkably strong limit; in fact, it is 29 orders of magnitude better than the best constraints on similar coefficients. Thus, we propose that inflation could stringently test other modified gravity theories. © 2017 American Physical Society. |
| format |
JOUR |
| author |
Bonder, Y. León, G. |
| spellingShingle |
Bonder, Y. León, G. Inflation as an amplifier: The case of Lorentz violation |
| author_facet |
Bonder, Y. León, G. |
| author_sort |
Bonder, Y. |
| title |
Inflation as an amplifier: The case of Lorentz violation |
| title_short |
Inflation as an amplifier: The case of Lorentz violation |
| title_full |
Inflation as an amplifier: The case of Lorentz violation |
| title_fullStr |
Inflation as an amplifier: The case of Lorentz violation |
| title_full_unstemmed |
Inflation as an amplifier: The case of Lorentz violation |
| title_sort |
inflation as an amplifier: the case of lorentz violation |
| url |
http://hdl.handle.net/20.500.12110/paper_24700010_v96_n4_p_Bonder |
| work_keys_str_mv |
AT bondery inflationasanamplifierthecaseoflorentzviolation AT leong inflationasanamplifierthecaseoflorentzviolation |
| _version_ |
1807318282115481600 |