Large slow-roll corrections to the bispectrum of noncanonical inflation

Journal of Cosmology and Astroparticle Physics

Volumn 2011, Issue 7, 2011, Pages

  Burrage, Clare ^a   Ribeiro, Raquel H ^b   Seery, David ^c  

^a UNIVERSITY OF GENEVA   (Switzerland)

^b UNIVERSITY OF CAMBRIDGE   (United Kingdom)

^c UNIVERSITY OF SUSSEX   (United Kingdom)

Author keywords

cosmological perturbation theory; ination; non gaussianity; physics of the early universe

Indexed keywords

EID: 79961236448     PISSN: None     EISSN: 14757516     Source Type: Journal    
DOI: 10.1088/1475-7516/2011/07/032     Document Type: Review

References (149)

1. E. Komatsu et al., Non-Gaussianity as a probe of the physics of the primordial universe and the astrophysics of the low redshift universe, [arXiv:09024759]
2. J.M. Bardeen, P.J. Steinhardt and M.S. Turner, 1983 Spontaneous creation of almost scale-free density perturbations in an inflationary universe, Phys. Rev. D 28 679
3. D. Wands, K.A. Malik, D.H. Lyth and A.R. Liddle, 2000 A new approach to the evolution of cosmological perturbations on large scales, Phys. Rev. D 62 043527 [astro-ph/0003278]
4. N. Jarosik et al., 2011 Seven-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: sky maps, systematic errors and basic results, Astrophys. J. Suppl. 192 14 [arXiv:10014744]
5. D. Larson et al., 2011 Seven-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: power spectra and WMAP-derived parameters, Astrophys. J. Suppl. 192 16 [arXiv:10014635]
6. WMAP collaboration, E. Komatsu et al., 2011 Seven-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: cosmological interpretation, Astrophys. J. Suppl. 192 18 [arXiv:10014538]
7. L. Verde, L.-M. Wang, A. Heavens and M. Kamionkowski, 2000 Large-scale structure, the cosmic microwave background and primordial non-Gaussianity, Mon. Not. Roy. Astron. Soc. 313 L141 [astro-ph/9906301]
8. E. Komatsu and D.N. Spergel, 2001 Acoustic signatures in the primary microwave background bispectrum, Phys. Rev. D 63 063002 [astro-ph/0005036]
9. F. Bernardeau, S. Colombi, E. Gaztanaga and R. Scoccimarro, 2002 Large-scale structure of the universe and cosmological perturbation theory, Phys. Rept. 367 1 [astro-ph/0112551]
10. NL) and a new consistency test of single-field inflation, Phys. Rev. D 81 123007 [arXiv:10041409]
11. J.R. Fergusson, D.M. Regan and E.P.S. Shellard, Optimal trispectrum estimators and WMAP constraints, [arXiv:10126039]
12. D.H. Lyth and A.R. Liddle, 2009 The primordial density perturbation: cosmology, inflation and the origin of structure, Cambridge University Press, Cambridge U.K. [http://www.slac.stanford.edu/spires/find/hep/www?key=8640165]
13. D.H. Lyth and Y. Rodriguez, 2005 The inflationary prediction for primordial non-Gaussianity, Phys. Rev. Lett. 95 121302 [astro-ph/0504045]
14. A.A. Starobinsky, 1985 Multicomponent de Sitter (inflationary) stages and the generation of perturbations JETP Lett. 42 152
15. A.A. Starobinsky, 1985 Pisma Zh. Eksp. Teor. Fiz. 42 124
16. M. Sasaki and E.D. Stewart, 1996 A general analytic formula for the spectral index of the density perturbations produced during inflation, Prog. Theor. Phys. 95 71 [astro-ph/9507001]
17. A.H. Guth and S.Y. Pi, 1982 Fluctuations in the new inflationary universe, Phys. Rev. Lett. 49 1110
18. S.W. Hawking, 1982 The development of irregularities in a single bubble inflationary universe, Phys. Lett. B 115 295
19. S.W. Hawking and I.G. Moss, 1983 Fluctuations in the inflationary universe, Nucl. Phys. B 224 180
20. D.H. Lyth, 1985 Large scale energy density perturbations and inflation, Phys. Rev. D 31 1792
21. V.F. Mukhanov, 1985 Gravitational instability of the universe filled with a scalar field JETP Lett. 41 493
22. V.F. Mukhanov, 1985 Pisma Zh. Eksp. Teor. Fiz. 41 402
23. M. Sasaki, 1986 Large scale quantum fluctuations in the inflationary universe, Prog. Theor. Phys. 76 1036
24. T. Falk, R. Rangarajan and M. Srednicki, 1993 The angular dependence of the three point correlation function of the Cosmic Microwave Background radiation as predicted by inflationary cosmologies, Astrophys. J. 403 L1 [astro-ph/9208001]
25. A. Gangui, F. Lucchin, S. Matarrese and S. Mollerach, 1994 The three point correlation function of the Cosmic Microwave Background in inflationary models, Astrophys. J. 430 447 [astro-ph/9312033] (Pubitemid 24808383)
26. T. Pyne and S.M. Carroll, 1996 Higher-order gravitational perturbations of the Cosmic Microwave Background, Phys. Rev. D 53 2920 [astro-ph/9510041]
27. L.-M. Wang and M. Kamionkowski, 2000 The Cosmic Microwave Background bispectrum and inflation, Phys. Rev. D 61 063504 [astro-ph/9907431]
28. J.M. Maldacena, 2003 Non-Gaussian features of primordial fluctuations in single field inflationary models J. High Energy Phys. JHEP05(2003)013 [astro-ph/0210603]
29. D. Seery and J.E. Lidsey, 2005 Primordial non-Gaussianities from multiple-field inflation J. Cosmol. Astropart. Phys. JCAP09(2005)011 [astro-ph/0506056]
30. D. Seery, J.E. Lidsey and M.S. Sloth, 2007 The inflationary trispectrum J. Cosmol. Astropart. Phys. JCAP01(2007)027 [astro-ph/0610210]
31. D. Seery, M.S. Sloth and F. Vernizzi, 2009 Inflationary trispectrum from graviton exchange J. Cosmol. Astropart. Phys. JCAP03(2009)018 [arXiv:08113934]
32. P. Creminelli, 2003 On non-Gaussianities in single-field inflation J. Cosmol. Astropart. Phys. JCAP10(2003)003 [astro-ph/0306122]
33. N. Arkani-Hamed, H.-C. Cheng, M.A. Luty and S. Mukohyama, 2004 Ghost condensation and a consistent infrared modification of gravity J. High Energy Phys. JHEP05(2004)074 [hep-th/0312099]
34. N. Arkani-Hamed, P. Creminelli, S. Mukohyama and M. Zaldarriaga, 2004 Ghost inflation J. Cosmol. Astropart. Phys. JCAP04(2004)001 [hep-th/0312100]
35. M. Alishahiha, E. Silverstein and D. Tong, 2004 DBI in the sky, Phys. Rev. D 70 123505 [hep-th/0404084]
36. C. Burrage, C. de Rham, D. Seery and A.J. Tolley, 2011 Galileon inflation J. Cosmol. Astropart. Phys. JCAP01(2011)014 [arXiv:10092497]
37. T. Kobayashi, M. Yamaguchi and J. Yokoyama, 2010 G-inflation: inflation driven by the Galileon field, Phys. Rev. Lett. 105 231302 [arXiv:10080603]
38. S. Mizuno and K. Koyama, 2010 Primordial non-Gaussianity from the DBI Galileons, Phys. Rev. D 82 103518 [arXiv:10090677]
39. P. Creminelli, G. D'Amico, M. Musso, J. Norena and E. Trincherini, 2011 Galilean symmetry in the effective theory of inflation: new shapes of non-Gaussianity J. Cosmol. Astropart. Phys. JCAP02(2011)006 [arXiv:10113004]
40. K. Kamada, T. Kobayashi, M. Yamaguchi and J. Yokoyama, 2011 Higgs G-inflation, Phys. Rev. D 83 083515 [arXiv:10124238]
41. C. Armendriz-Picón, T. Damour and V.F. Mukhanov, 1999 k-inflation, Phys. Lett. B 458 209 [hep-th/9904075]
42. J. Garriga and V.F. Mukhanov, 1999 Perturbations in k-inflation, Phys. Lett. B 458 219 [hep-th/9904176]
43. A. Gruzinov, 2005 Consistency relation for single scalar inflation, Phys. Rev. D 71 027301 [astro-ph/0406129]
44. D. Seery and J.E. Lidsey, 2005 Primordial non-Gaussianities in single field inflation J. Cosmol. Astropart. Phys. JCAP06(2005)003 [astro-ph/0503692]
45. X. Chen, M.-X. Huang, S. Kachru and G. Shiu, 2007 Observational signatures and non-Gaussianities of general single field inflation J. Cosmol. Astropart. Phys. JCAP01(2007)002 [hep-th/0605045]
46. D. Langlois and S. Renaux-Petel, 2008 Perturbations in generalized multi-field inflation J. Cosmol. Astropart. Phys. JCAP04(2008)017 [arXiv:08011085]
47. D. Langlois, S. Renaux-Petel, D.A. Steer and T. Tanaka, 2008 Primordial perturbations and non-Gaussianities in DBI and general multi-field inflation, Phys. Rev. D 78 063523 [arXiv:08060336]
48. F. Arroja, S. Mizuno and K. Koyama, 2008 Non-Gaussianity from the bispectrum in general multiple field inflation J. Cosmol. Astropart. Phys. JCAP08(2008)015 [arXiv:08060619]
49. X. Chen, M.-x. Huang and G. Shiu, 2006 The inflationary trispectrum for models with large non-Gaussianities, Phys. Rev. D 74 121301 [hep-th/0610235]
50. F. Arroja and K. Koyama, 2008 Non-Gaussianity from the trispectrum in general single field inflation, Phys. Rev. D 77 083517 [arXiv:08021167]
51. D. Langlois, S. Renaux-Petel, D.A. Steer and T. Tanaka, 2008 Primordial fluctuations and non-Gaussianities in multi-field DBI inflation, Phys. Rev. Lett. 101 061301 [arXiv:08043139]
52. F. Arroja, S. Mizuno, K. Koyama and T. Tanaka, 2009 On the full trispectrum in single field DBI-inflation, Phys. Rev. D 80 043527 [arXiv:09053641]
53. S. Mizuno, F. Arroja and K. Koyama, 2009 On the full trispectrum in multi-field DBI inflation, Phys. Rev. D 80 083517 [arXiv:09072439]
54. X. Gao and C. Lin, 2010 On primordial trispectrum from exchanging scalar modes in general multiple field inflationary models J. Cosmol. Astropart. Phys. JCAP11(2010)035 [arXiv:10091311]
55. CMBPol Study Team collaboration, D. Baumann et al., 2009 CMBPol mission concept study: probing inflation with CMB polarization, AIP Conf. Proc. 1141 10 [arXiv:08113919]
56. COrE collaboration, COrE (Cosmic Origins Explorer) a white paper, [arXiv:11022181]
57. E.D. Stewart and D.H. Lyth, 1993 A more accurate analytic calculation of the spectrum of cosmological perturbations produced during inflation, Phys. Lett. B 302 171 [gr-qc/9302019]
58. I.J. Grivell and A.R. Liddle, 1996 Accurate determination of inflationary perturbations, Phys. Rev. D 54 7191 [astro-ph/9607096]
59. J.-O. Gong and E.D. Stewart, 2001 The density perturbation power spectrum to second-order corrections in the slow-roll expansion, Phys. Lett. B 510 1 [astro-ph/0101225]
60. J.-O. Gong and E.D. Stewart, 2002 The power spectrum for a multi-component inflaton to second-order corrections in the slow-roll expansion, Phys. Lett. B 538 213 [astro-ph/0202098]
61. H. Wei, R.-G. Cai and A. Wang, 2004 Second-order corrections to the power spectrum in the slow-roll expansion with a time-dependent sound speed, Phys. Lett. B 603 95 [hep-th/0409130]
62. J.E. Lidsey et al., 1997 Reconstructing the inflaton potential: an overview, Rev. Mod. Phys. 69 373 [astro-ph/9508078]
63. E. Silverstein and D. Tong, 2004 Scalar speed limits and cosmology: acceleration from D-cceleration, Phys. Rev. D 70 103505 [hep-th/0310221]
64. D.H. Lyth, 1997 What would we learn by detecting a gravitational wave signal in the Cosmic Microwave Background anisotropy?, Phys. Rev. Lett. 78 1861 [hep-ph/9606387]
65. D. Baumann and L. McAllister, 2007 A microscopic limit on gravitational waves from D-brane inflation, Phys. Rev. D 75 123508 [hep-th/0610285]
66. J.E. Lidsey and I. Huston, 2007 Gravitational wave constraints on Dirac-Born-Infeld inflation J. Cosmol. Astropart. Phys. JCAP07(2007)002 [arXiv:07050240]
67. J.E. Lidsey and D. Seery, 2007 Primordial non-Gaussianity and gravitational waves: observational tests of brane inflation in string theory, Phys. Rev. D 75 043505 [astro-ph/0610398]
68. R. Bean, X. Chen, H. Peiris and J. Xu, 2008 Comparing infrared Dirac-Born-Infeld brane inflation to observations, Phys. Rev. D 77 023527 [arXiv:07101812]
69. A.J. Christopherson and K.A. Malik, 2009 The non-adiabatic pressure in general scalar field systems, Phys. Lett. B 675 159 [arXiv:08093518]
70. R.M. Wald, 1983 Asymptotic behavior of homogeneous cosmological models in the presence of a positive cosmological constant, Phys. Rev. D 28 2118
71. H. Kodama and M. Sasaki, 1984 Cosmological perturbation theory, Prog. Theor. Phys. Suppl. 78 1
72. K.A. Malik and D. Wands, 2009 Cosmological perturbations, Phys. Rept. 475 1 [arXiv:08094944]
73. R.L. Arnowitt, S. Deser and C.W. Misner, The dynamics of general relativity, [gr-qc/0405109]
74. S. Weinberg, 2008 A tree theorem for inflation, Phys. Rev. D 78 063534 [arXiv:08053781]
75. S. Weinberg, 2005 Quantum contributions to cosmological correlations, Phys. Rev. D 72 043514 [hep-th/0506236]
76. S. Weinberg, 2006 Quantum contributions to cosmological correlations. II: can these corrections become large?, Phys. Rev. D 74 023508 [hep-th/0605244]
77. M. van der Meulen and J. Smit, 2007 Classical approximation to quantum cosmological correlations J. Cosmol. Astropart. Phys. JCAP11(2007)023 [arXiv:07070842]
78. T. Prokopec and G. Rigopoulos, 2010 Path integral for inflationary perturbations, Phys. Rev. D 82 023529 [arXiv:10040882]
79. D.S. Salopek and J.R. Bond, 1990 Nonlinear evolution of long wavelength metric fluctuations in inflationary models, Phys. Rev. D 42 3936
80. C. Cheung, P. Creminelli, A.L. Fitzpatrick, J. Kaplan and L. Senatore, 2008 The effective field theory of inflation J. High Energy Phys. JHEP03(2008)014 [arXiv:07090293]
81. D. Baumann and D. Green, Equilateral non-Gaussianity and new physics on the horizon, [arXiv:11025343]
82. A.R. Liddle and D.H. Lyth, 1993 The cold dark matter density perturbation, Phys. Rept. 231 1 [astro-ph/9303019]
83. D.H. Lyth and A. Riotto, 1999 Particle physics models of inflation and the cosmological density perturbation, Phys. Rept. 314 1 [hep-ph/9807278]
84. J. Choe, J.-O. Gong and E.D. Stewart, 2004 Second order general slow-roll power spectrum J. Cosmol. Astropart. Phys. JCAP07(2004)012 [hep-ph/0405155]
85. X. Chen, R. Easther and E.A. Lim, 2007 Large non-Gaussianities in single field inflation J. Cosmol. Astropart. Phys. JCAP06(2007)023 [astro-ph/0611645]
86. X. Chen, R. Easther and E.A. Lim, 2008 Generation and characterization of large non-Gaussianities in single field inflation J. Cosmol. Astropart. Phys. JCAP04(2008)010 [arXiv:08013295]
87. X. Chen, 2010 Folded resonant non-Gaussianity in general single field inflation J. Cosmol. Astropart. Phys. JCAP12(2010)003 [arXiv:10082485]
88. L. Leblond and E. Pajer, 2011 Resonant trispectrum and a dozen more primordial N-point functions J. Cosmol. Astropart. Phys. JCAP01(2011)035 [arXiv:10104565]
89. P. Adshead, W. Hu, C. Dvorkin and H.V. Peiris, Fast computation of bispectrum features with generalized slow roll, [arXiv:11023435]
90. D. Seery, 2008 One-loop corrections to the curvature perturbation from inflation J. Cosmol. Astropart. Phys. JCAP02(2008)006 [arXiv:07073378]
91. C.P. Burgess, L. Leblond, R. Holman and S. Shandera, 2010 Super-Hubble de Sitter fluctuations and the dynamical RG J. Cosmol. Astropart. Phys. JCAP03(2010)033 [arXiv:09121608]
92. D. Seery, 2010 Infrared effects in inflationary correlation functions, Class. Quant Grav. 27 124005 [arXiv:10051649]
93. D.J. Mulryne, D. Seery and D. Wesley, 2010 Moment transport equations for non-Gaussianity J. Cosmol. Astropart. Phys. JCAP01(2010)024 [arXiv:09092256]
94. D.J. Mulryne, D. Seery and D. Wesley, 2011 Moment transport equations for the primordial curvature perturbation J. Cosmol. Astropart. Phys. JCAP04(2011)030 [arXiv:10083159]
95. C.M. Peterson and M. Tegmark, Non-Gaussianity in two-field inflation, [arXiv:10116675]
96. T.S. Bunch and P.C.W. Davies, 1978 Quantum field theory in de Sitter space: renormalization by point splitting, Proc. Roy. Soc. Lond. A 360 117
97. G.I. Rigopoulos and E.P.S. Shellard, 2003 The separate universe approach and the evolution of nonlinear superhorizon cosmological perturbations, Phys. Rev. D 68 123518 [astro-ph/0306620]
98. D.H. Lyth, K.A. Malik and M. Sasaki, 2005 A general proof of the conservation of the curvature perturbation J. Cosmol. Astropart. Phys. JCAP05(2005)004 [astro-ph/0411220]
99. A. Naruko and M. Sasaki, 2011 Conservation of the nonlinear curvature perturbation in generic single-field inflation, Class. Quant. Grav. 28 072001 [arXiv:11013180]
100. D. Seery and J.E. Lidsey, 2006 Non-Gaussian inflationary perturbations from the dS/CFT correspondence J. Cosmol. Astropart. Phys. JCAP06(2006)001 [astro-ph/0604209]
101. J.S. Schwinger, 1961 Brownian motion of a quantum oscillator, J. Math. Phys. 2 407
102. P.M. Bakshi and K.T. Mahanthappa, 1963 Expectation value formalism in quantum field theory. 1, J. Math. Phys. 4 1
103. P.M. Bakshi and K.T. Mahanthappa, 1963 Expectation value formalism in quantum field theory. 2, J. Math. Phys. 4 12
104. L.V. Keldysh, 1964 Diagram technique for nonequilibrium processes Zh. Eksp. Teor. Fiz. 47 1515
105. L.V. Keldysh, 1965 Sov. Phys. JETP 20 1018
106. R.D. Jordan, 1986 Effective field equations for expectation values, Phys. Rev. D 33 444
107. E. Calzetta and B.L. Hu, 1987 Closed time path functional formalism in curved space-time: application to cosmological back reaction problems, Phys. Rev. D 35 495
108. D. Seery, 2007 One-loop corrections to a scalar field during inflation J. Cosmol. Astropart. Phys. JCAP11(2007)025 [arXiv:07073377]
109. K. Koyama, 2010 Non-Gaussianity of quantum fields during inflation, Class. Quant. Grav. 27 124001 [arXiv:10020600]
110. E. Witten, Quantum gravity in de Sitter space, [hep-th/0106109]
111. L. Senatore, K.M. Smith and M. Zaldarriaga, 2010 Non-Gaussianities in single field inflation and their optimal limits from the WMAP 5-year data J. Cosmol. Astropart. Phys. JCAP01(2010)028 [arXiv:09053746]
112. M. Gell-Mann and F.E. Low, 1954 Quantum electrodynamics at small distances, Phys. Rev. 95 1300
113. D. Seery, 2009 A parton picture of de Sitter space during slow-roll inflation J. Cosmol. Astropart. Phys. JCAP05(2009)021 [arXiv:09032788]
114. J.C. Collins, D.E. Soper and G.F. Sterman, 1988 Factorization of hard processes in {QCD} Adv. Ser. Direct. High Energy Phys. 5 1 [hep-ph/0409313]
115. P. Creminelli and M. Zaldarriaga, 2004 Single field consistency relation for the 3-point function J. Cosmol. Astropart. Phys. JCAP10(2004)006 [astro-ph/0407059]
116. J. Ganc and E. Komatsu, 2010 A new method for calculating the primordial bispectrum in the squeezed limit J. Cosmol. Astropart. Phys. JCAP12(2010)009 [arXiv:10065457]
117. S. Renaux-Petel, 2010 On the squeezed limit of the bispectrum in general single field inflation J. Cosmol. Astropart. Phys. JCAP10(2010)020 [arXiv:10080260]
118. X. Chen, 2010 Primordial non-Gaussianities from inflation models, Adv. Astron. 2010 638979 [arXiv:10021416]
119. D. Babich, P. Creminelli and M. Zaldarriaga, 2004 The shape of non-Gaussianities J. Cosmol. Astropart. Phys. JCAP08(2004)009 [astro-ph/0405356]
120. J.R. Fergusson and E.P.S. Shellard, 2009 The shape of primordial non-Gaussianity and the CMB bispectrum, Phys. Rev. D 80 043510 [arXiv:08123413]
121. NL, Phys. Rev. D 82 023502 [arXiv:09125516]
122. P.D. Meerburg, J.P. van der Schaar and P.S. Corasaniti, 2009 Signatures of initial state modifications on bispectrum statistics J. Cosmol. Astropart. Phys. JCAP05(2009)018 [arXiv:09014044]
123. A. Kosowsky and M.S. Turner, 1995 CBR anisotropy and the running of the scalar spectral index, Phys. Rev. D 52 1739 [astro-ph/9504071]
124. X. Chen, 2005 Running non-gaussianities in DBI inflation, Phys. Rev. D 72 123518 [astro-ph/0507053]
125. M. LoVerde, A. Miller, S. Shandera and L. Verde, 2008 Effects of scale-dependent non-Gaussianity on cosmological structures J. Cosmol. Astropart. Phys. JCAP04(2008)014 [arXiv:07114126]
126. L. Leblond and S. Shandera, 2008 Simple bounds from the perturbative regime of inflation J. Cosmol. Astropart. Phys. JCAP08(2008)007 [arXiv:08022290]
127. E. Sefusatti, M. Liguori, A.P.S. Yadav, M.G. Jackson and E. Pajer, 2009 Constraining running non-Gaussianity J. Cosmol. Astropart. Phys. JCAP12(2009)022 [arXiv:09060232]
128. NL J. Cosmol. Astropart. Phys. JCAP02(2010)034 [arXiv:09112780]
129. C.T. Byrnes, M. Gerstenlauer, S. Nurmi, G. Tasinato and D. Wands, 2010 Scale-dependent non-Gaussianity probes inflationary physics J. Cosmol. Astropart. Phys. JCAP10(2010)004 [arXiv:10074277]
130. E.J. Copeland, E.W. Kolb, A.R. Liddle and J.E. Lidsey, 1993 Reconstructing the inflation potential, in principle and in practice, Phys. Rev. D 48 2529 [hep-ph/9303288]
131. E.J. Copeland, E.W. Kolb, A.R. Liddle and J.E. Lidsey, 1994 Reconstructing the inflaton potential: perturbative reconstruction to second order, Phys. Rev. D 49 1840 [astro-ph/9308044]
132. L.P. Grishchuk, 1975 Amplification of gravitational waves in an istropic universe Sov. Phys. JETP 40 409
133. L.P. Grishchuk, 1974 Zh. Eksp. Teor. Fiz. 67 825
134. F. Lucchin and S. Matarrese, 1985 Power law inflation, Phys. Rev. D 32 1316
135. F. Lucchin and S. Matarrese, 1985 Kinematical properties of generalized inflation, Phys. Lett. B 164 282
136. J. Khoury and F. Piazza, 2009 Rapidly-varying speed of sound, scale invariance and non-Gaussian signatures J. Cosmol. Astropart. Phys. JCAP07(2009)026 [arXiv:08113633]
137. C. de Rham and A.J. Tolley, 2010 DBI and the Galileon reunited J. Cosmol. Astropart. Phys. JCAP05(2010)015 [arXiv:10035917]
138. A.A. Tseytlin, Born-Infeld action, supersymmetry and string theory, [hep-th/9908105]
139. D.A. Easson and R. Gregory, 2009 Circumventing the eta problem, Phys. Rev. D 80 083518 [arXiv:09021798]
140. D. Baumann, L. Senatore and M. Zaldarriaga, 2011 Scale-invariance and the strong coupling problem J. Cosmol. Astropart. Phys. JCAP05(2011)004 [arXiv:11013320]
141. P. Franche, R. Gwyn, B. Underwood and A. Wissanji, 2010 Attractive Lagrangians for noncanonical inflation, Phys. Rev. D 81 123526 [arXiv:09121857]
142. X. Chen, 2005 Multi-throat brane inflation, Phys. Rev. D 71 063506 [hep-th/0408084]
143. X. Chen, 2005 Inflation from warped space J. High Energy Phys. JHEP08(2005)045 [hep-th/0501184]
144. R. Bean, S.E. Shandera, S.H. Henry Tye and J. Xu, 2007 Comparing brane inflation to WMAP J. Cosmol. Astropart. Phys. JCAP05(2007)004 [hep-th/0702107]
145. H.V. Peiris, D. Baumann, B. Friedman and A. Cooray, 2007 Phenomenology of D-brane inflation with general speed of sound, Phys. Rev. D 76 103517 [arXiv:07061240]
146. L. Alabidi and J.E. Lidsey, 2008 Single-field inflation after WMAP5, Phys. Rev. D 78 103519 [arXiv:08072181]
147. J. Noller and J. Magueijo, 2011 Non-Gaussianity in single field models without slow-roll, Phys. Rev. D 83 103511 [arXiv:11020275]
148. L.P.L. Colombo, E. Pierpaoli and J.R. Pritchard, 2009 Cosmological parameters after WMAP5: forecasts for Planck and future galaxy surveys, Mon. Not. Roy. Astron. Soc. 398 1621 [arXiv:08112622]
149. F. Arroja and T. Tanaka, 2011 A note on the role of the boundary terms for the non-Gaussianity in general k-inflation J. Cosmol. Astropart. Phys. JCAP05(2011)005 [arXiv:11031102]