Fetching the paper…

Reading the bibliography…

2012

Local Features with Large Spiky non-Gaussianities during Inflation

Abolhasani, Ali Akbar, Firouzjahi, Hassan, Khosravi, Shahram et al.

Original
PDF
Post on X

Understand

We provide a dynamical mechanism to generate localized features during inflation.

The local feature is due to a sharp waterfall phase transition which is coupled to the inflaton field.
The key effect is the contributions of waterfall quantum fluctuations which induce a sharp peak on the curvature perturbation which can be as large as the background curvature perturbation from inflaton field.
Due to non-Gaussian nature of waterfall quantum fluctuations a large spike non-Gaussianity is produced which is narrowly peaked at modes which leave the Hubble radius at the time of phase transition.

Local Features with Large Spiky non-Gaussianities during Inflation · Around

Built on

A. A. Starobinsky, “Spectrum of adiabatic perturbations in the universe when there are singularities in the inflation potential,” JETP Lett. 55
1992
Earlier work this paper cites.
A. D. Linde, “Hybrid inflation,” Phys. Rev. D 49
1994
Earlier work this paper cites.
A. R. Liddle, D. H. Lyth, E. D. Stewart and D. Wands, “False vacuum inflation with Einstein gravity,” Phys. Rev. D 49
1994
Earlier work this paper cites.
L. Randall, M. Soljacic, A. H. Guth, “Supernatural inflation: Inflation from supersymmetry with no (very) small parameters,” Nucl. Phys. B472
1996
Earlier work this paper cites.
J. Garcia-Bellido, A. D. Linde, D. Wands, “Density perturbations and black hole formation in hybrid inflation,” Phys. Rev. D54
1996
Earlier work this paper cites.
M. Sasaki, E. D. Stewart, “A General analytic formula for the spectral index of the density perturbations produced during inflation,” Prog. Theor. Phys. 95
1996
Earlier work this paper cites.
M. Sasaki and T. Tanaka, “Superhorizon scale dynamics of multiscalar inflation,” Prog. Theor. Phys. 99
1998
Earlier work this paper cites.
D. Wands, K. A. Malik, D. H. Lyth et al
2000
Earlier work this paper cites.
S. M. Leach, M. Sasaki, D. Wands and A. R. Liddle, Phys. Rev. D 64
2001
Earlier work this paper cites.
J. A. Adams, B. Cresswell, R. Easther, “Inflationary perturbations from a potential with a step,” Phys. Rev. D64
2001
Earlier work this paper cites.
E. Komatsu and D. N. Spergel, “Acoustic signatures in the primary microwave background bispectrum,” Phys. Rev. D 63
2001
Earlier work this paper cites.
J. M. Maldacena, “Non-Gaussian features of primordial fluctuations in single field inflationary models,” JHEP 0305
2003
Earlier work this paper cites.
K. Enqvist and A. Vaihkonen, “Non-Gaussian perturbations in hybrid inflation,” JCAP 0409
2004
Earlier work this paper cites.
J. -O. Gong, “Breaking scale invariance from a singular inflaton potential,” JCAP 0507
2005
Earlier work this paper cites.
K. Enqvist, A. Jokinen, A. Mazumdar, T. Multamaki and A. Vaihkonen, “Non-Gaussianity from Preheating,” Phys. Rev. Lett. 94
2005
Earlier work this paper cites.
N. Barnaby and J. M. Cline, “Nongaussianity from Tachyonic Preheating in Hybrid Inflation,” Phys. Rev. D 75
2006
Earlier work this paper cites.

Similar

X. Chen, R. Easther and E. A. Lim, “Large Non-Gaussianities in Single Field Inflation,” JCAP 0706
2007
Cited alongside, same era.
M. Joy, V. Sahni, A. A. Starobinsky, “A New Universal Local Feature in the Inflationary Perturbation Spectrum,” Phys. Rev. D77
Original
2008
Cited alongside, same era.
X. Chen, R. Easther and E. A. Lim, “Generation and Characterization of Large Non-Gaussianities in Single Field Inflation,” JCAP 0804
Original
2008
Cited alongside, same era.
A. E. Romano and M. Sasaki, Phys. Rev. D 78
Original
2008
Cited alongside, same era.
E. Silverstein and A. Westphal, “Monodromy in the CMB: Gravity Waves and String Inflation,” Phys. Rev. D 78
Original
2008

Then

X. Chen, “Fingerprints of Primordial Universe Paradigms as Features in Density Perturbations,” Phys. Lett. B 706
Original
2011
Later among the works it cites.
F. Arroja, A. E. Romano and M. Sasaki, “Large and strong scale dependent bispectrum in single field inflation from a sharp feature in the mass,” Phys. Rev. D 84
Original
2011
Later among the works it cites.
H. Firouzjahi and S. Khoeini-Moghaddam, “Fields Annihilation and Particles Creation in DBI inflation,” JCAP 1102
Original
2011
Later among the works it cites.
D. Battefeld, T. Battefeld, J. T. Giblin, Jr. and E. K. Pease, “Observable Signatures of Inflaton Decays,” JCAP 1102
Original
2011
Later among the works it cites.
R. Flauger and E. Pajer, “Resonant Non-Gaussianity,” JCAP 1101

Beyond the bibliography

alphaXiv searches the wider corpus for related work and actual follow-ups.

Open on alphaXiv

alphaXiv is searching for related work…

Cited alongside, same era.

R. Bean, X. Chen, G. Hailu, S. -H. H. Tye and J. Xu, “Duality Cascade in Brane Inflation,” JCAP 0803

2008

Cited alongside, same era.

N. Barnaby and Z. Huang, “Particle Production During Inflation: Observational Constraints and Signatures,” Phys. Rev. D 80

2009

Cited alongside, same era.

D. H. Lyth and A. R. Liddle, Primordial Density Perturbation

2009

Cited alongside, same era.

J. R. Bond, A. V. Frolov, Z. Huang and L. Kofman, “Non-Gaussian Spikes from Chaotic Billiards in Inflation Preheating,” Phys. Rev. Lett. 103

2009

Cited alongside, same era.

S. Hotchkiss and S. Sarkar, “Non-Gaussianity from violation of slow-roll in multiple inflation,” JCAP 1005

2010

Cited alongside, same era.

D. Battefeld, T. Battefeld, H. Firouzjahi and N. Khosravi, “Brane Annihilations during Inflation,” JCAP 1007

2010

Cited alongside, same era.

N. Barnaby, “On Features and Nongaussianity from Inflationary Particle Production,” Phys. Rev. D 82

2010

Cited alongside, same era.

2011

Later among the works it cites.

A. A. Abolhasani, H. Firouzjahi, “No Large Scale Curvature Perturbations during Waterfall of Hybrid Inflation,” Phys. Rev. D83

2011

Later among the works it cites.

J. -O. Gong, M. Sasaki, “Waterfall field in hybrid inflation and curvature perturbation,” JCAP 1103

2011

Later among the works it cites.

A. Mazumdar, J. Rocher, “Particle physics models of inflation and curvaton scenarios,” Phys. Rept. 497

2011

Later among the works it cites.

S. Clesse, “Hybrid inflation along waterfall trajectories,” Phys. Rev. D 83

2011

Later among the works it cites.

D. Mulryne, S. Orani and A. Rajantie, “Non-Gaussianity from the hybrid potential,” Phys. Rev. D 84

2011

Later among the works it cites.

H. Kodama, K. Kohri and K. Nakayama, “On the waterfall behavior in hybrid inflation,” Prog. Theor. Phys. 126

2011

Later among the works it cites.

E. Bugaev and P. Klimai, “Curvature perturbation spectra from waterfall transition, black hole constraints and non-Gaussianity,” JCAP 1111

2011

Later among the works it cites.

X. Chen, “Primordial Features as Evidence for Inflation,” JCAP 1201

2012

Closest in time.

P. Adshead, C. Dvorkin, W. Hu and E. A. Lim, “Non-Gaussianity from Step Features in the Inflationary Potential,” Phys. Rev. D 85

2012

Closest in time.

A. Avgoustidis, S. Cremonini, A. -C. Davis, R. H. Ribeiro, K. Turzynski and S. Watson, “The Importance of Slow-roll Corrections During Multi-field Inflation,” JCAP 1202

2012

Closest in time.

J. Martin and V. Vennin, “Stochastic Effects in Hybrid Inflation,” Phys. Rev. D 85

2070

Closest in time.