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Gravitational wave spectrum induced by primordial scalar perturbations
Open accessAbstract
We derive the complete spectrum of gravitational waves induced by primordial scalar perturbations ranging over all observable wavelengths. This scalar-induced contribution can be computed directly from the observed scalar perturbations and general relativity and is, in this sense, independent of the cosmological model for generating the perturbations. The spectrum is scale invariant on small scales, but has an interesting scale dependence on large and intermediate scales, where scalar-induced gravitational waves do not redshift and are hence enhanced relative to the background density of the Universe. This contribution to the tensor spectrum is significantly different in form from the direct model-dependent primordial tensor spectrum and, although small in magnitude, it dominates the primordial signal for some cosmological models. We confirm our analytical results by direct numerical integration of the equations of motion.
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Spergel, D. N., Verde, L., Peiris, H. V., Komatsu, E., Nolta, M. R., Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Kogut, A., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377226 · Cited by 10,976
Inflationary universe: A possible solution to the horizon and flatness problems
Guth, A. H. (1981) · Physical Review D · doi:10.1103/physrevd.23.347 · Cited by 9,983
Linde, A. D. (1982) · Physics Letters B · doi:10.1016/0370-2693(82)91219-9 · Cited by 6,405
Cosmology for Grand Unified Theories with Radiatively Induced Symmetry Breaking
Albrecht, A., & Steinhardt, P. J. (1982) · Physical Review Letters · doi:10.1103/physrevlett.48.1220 · Cited by 4,981
Self-citationPhysical Foundations of Cosmology
Mukhanov, V. (2005) · doi:10.1017/cbo9780511790553 · Cited by 2,316
Cosmic evolution in a cyclic universe
Steinhardt, P. J., & Turok, N. (2002) · Physical Review D · doi:10.1103/physrevd.65.126003 · Cited by 813
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Cited by
Primordial black holes—perspectives in gravitational wave astronomy
Sasaki, M., Suyama, T., Tanaka, T., & Yokoyama, S. (2018) · Classical and Quantum Gravity · doi:10.1088/1361-6382/aaa7b4 · Cited by 894
Gravitational Waves Induced by Non-Gaussian Scalar Perturbations
Cai, R.-G., Pi, S., & Sasaki, M. (2019) · Physical Review Letters · doi:10.1103/physrevlett.122.201101 · Cited by 435
Ekpyrotic and Cyclic Cosmology
Lehners, J.-L. (2008) · Physics Reports · doi:10.1016/j.physrep.2008.06.001 · Cited by 381
Gravitational wave signatures of inflationary models from Primordial Black Hole dark matter
García-Bellido, J., Peloso, M., & Unal, C. (2017) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2017/09/013 · Cited by 267
Ijjas, A., & Steinhardt, P. J. (2019) · Physics Letters B · doi:10.1016/j.physletb.2019.06.056 · Cited by 145
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Metadata
- Authors
- Baumann, D., Steinhardt, P., Takahashi, K., & Ichiki, K.
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 2007-10-17
- Volume
- 76
- Issue
- 8
- ISSN
- 0556-2821 (ISSN-L)
- 1550-7998
- 1550-2368
- OpenAlex
- W2058841045
- Cited by
- 731
- References
- 6
- FWCI
- 8.05
- Type
- journal article
- Language
- en
- Open access
- green
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