The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
Galilean genesis: an alternative to inflation
Open accessAbstract
We propose a novel cosmological scenario, in which standard inflation is replaced by an expanding phase with a drastic violation of the Null Energy Condition (NEC): >> H 2 . The model is based on the recently introduced Galileon theories, which allow NEC violating solutions without instabilities. The unperturbed solution describes a Universe that is asymptotically Minkowski in the past, expands with increasing energy density until it exits the regime of validity of the effective field theory and reheats. This solution is a dynamical attractor and the Universe is driven to it, even if it is initially contracting. The study of perturbations of the Galileon field reveals some subtleties, related to the gross violation of the NEC and it shows that adiabatic perturbations are cosmologically irrelevant. The model, however, suggests a new way to produce a scale invariant spectrum of isocurvature perturbations, which can later be converted to adiabatic: the Galileon is forced by symmetry to couple to the other fields as a dilaton; the effective metric it yields on the NEC violating solution is that of de Sitter space, so that all light scalars will automatically acquire a nearly scale-invariant spectrum of perturbations.
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“Because of their ability to violate the NEC, Galileon fields have been used to construct monsters of the type discussed above, including loitering, inflationary and bouncing cosmologies [37,40 -44] and other exotic cosmological solutions [45 -47].”
From Past-completeness of inflationary spacetimes (2023) · cites this paper as [40]
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Citations
Cites
Non-gaussian features of primordial fluctuations in single field inflationary models
Maldacena, J. (2003) · Journal of High Energy Physics · doi:10.1088/1126-6708/2003/05/013 · Cited by 2,906
Galileon as a local modification of gravity
Nicolis, A., Rattazzi, R., & Trincherini, E. (2009) · Physical Review D · doi:10.1103/physrevd.79.064036 · Cited by 1,863
Generating the curvature perturbation without an inflaton
Lyth, D. H., & Wands, D. (2002) · Physics Letters B · doi:10.1016/s0370-2693(01)01366-1 · Cited by 1,455
The effective field theory of inflation
Cheung, C., Fitzpatrick, A. L., Kaplan, J., Senatore, L., & Creminelli, P. (2008) · Journal of High Energy Physics · doi:10.1088/1126-6708/2008/03/014 · Cited by 1,175
Self-citationCausality, analyticity and an IR obstruction to UV completion
Adams, A. W., Nima Arkani-hamed, A., Dubovsky, S., Alberto Nicolis, A., & Riccardo Rattazzi, A. (2006) · Journal of High Energy Physics · doi:10.1088/1126-6708/2006/10/014 · Cited by 1,044
Ghost Condensation and a Consistent IR Modification of Gravity
Hamed, N. A., Cheng, H. S., Luty, M. A., & Mukohyama, S. (2004) · Journal of High Energy Physics · doi:10.1088/1126-6708/2004/05/074 · Cited by 996
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Strong interactions and stability in the DGP model
Luty, M. A., Porrati, M., & Rattazzi, R. (2003) · Journal of High Energy Physics · doi:10.1088/1126-6708/2003/09/029 · Cited by 672
New mechanism for generating density perturbations from inflation
Dvali, G., Gruzinov, A. V., & Zaldarriaga, M. (2004) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.69.023505 · Cited by 541
Starting the Universe: stable violation of the null energy condition and non-standard cosmologies
Creminelli, P., Luty, M. A., Nicolis, A., & Senatore, L. (2006) · Journal of High Energy Physics · doi:10.1088/1126-6708/2006/12/080 · Cited by 526
Self-citationk -Essence, superluminal propagation, causality and emergent geometry
Babichev, E., Mukhanov, V., & Vikman, A. (2008) · Journal of High Energy Physics · doi:10.1088/1126-6708/2008/02/101 · Cited by 496
Null energy condition and superluminal propagation
Dubovsky, S., Grégoire, T., Alberto Nicolis, A., & Riccardo Rattazzi, A. (2006) · Journal of High Energy Physics · doi:10.1088/1126-6708/2006/03/025 · Cited by 454
Weinberg, S. (2003) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.67.123504 · Cited by 314
Dbi and the galileon reunitedPreprint
de Rham, C., & Tolley, A. J. (2010) · Cited by 269
On the consistency relation of the three-point function in single-field inflation
Cheung, C., Fitzpatrick, A. L., Jared Kaplan, A., & Senatore, L. (2008) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2008/02/021 · Cited by 263
de Rham, C., & Tolley, A. J. (2010) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2010/05/015 · Cited by 260
A new approach to conformal invariant field theories
Fubini, S. (1976) · Nuovo cimento della Società italiana di fisica. A, Nuclei, particles and fields · doi:10.1007/bf02785664 · Cited by 250
Energy’s and amplitudes’ positivity
Alberto Nicolis, A., Riccardo Rattazzi, A., & Enrico Trincherini, A. (2010) · Journal of High Energy Physics · doi:10.1007/jhep05(2010)095 · Cited by 221
Null energy condition and superluminal propagation
Dubovsky, S., Gregoire, T., Nicolis, A., & Rattazzi, R. (2006) · Infoscience (Ecole Polytechnique Fédérale de Lausanne) · Cited by 217
Self-citationCosmological perturbations from inhomogeneous reheating, freeze-out, and mass domination
Dvali, G., Gruzinov, A. V., & Zaldarriaga, M. (2004) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.69.083505 · Cited by 194
Action approach to cosmological perturbations: the second-order metric in matter dominance
Lotfi Boubekeur, A., Creminelli, P., Noreña, J., & Vernizzi, F. (2008) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2008/08/028 · Cited by 73
Self-citationHarrison-Zel’dovich primordial spectrum is consistent with observations
Pandolfi, S., Cooray, A. R., Giusarma, E., Kolb, E. W., MELCHIORRI, A., Mena, O., & Serra, P. (2010) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.81.123509 · Cited by 20
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Imperfect dark energy from kinetic gravity braiding
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Metadata
- Authors
- Creminelli, P., Nicolis, A., & Trincherini, E.
- Affiliations
- The Abdus Salam International Centre for Theoretical Physics (ICTP) (IT)
- ORCID
- Creminelli, Paolo
- Venue
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Published
- 2010-11-17
- Volume
- 2010
- Issue
- 11
- Pages
- 021-021
- ISSN
- 1475-7508 (ISSN-L)
- 1475-7516
- OpenAlex
- W2086217832
- Cited by
- 328
- References
- 22
- Citations by year
- 2026: 9 · 2025: 13 · 2024: 15 · 2023: 12 · 2022: 6 · 2021: 18 · 2020: 20 · 2019: 13 · 2018: 16 · 2017: 18 · 2016: 37 · 2015: 23 · 2014: 26 · 2013: 27 · 2012: 34
- FWCI
- 18.23
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Cosmology and Astroparticle Physics (publishedVersion)
- arXiv (Cornell University) (publishedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion, other-oa)
- Scuola Normale Superiore di Pisa (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
- Keywords
- alternative to inflation, null energy condition violation, dynamical attractors, isocurvature perturbations, adiabatic perturbations, scale-invariant spectrum, dilaton coupling, reheating, primordial power spectrum
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