Quasi-Single Field Inflation and Non-Gaussianities
作者： Xingang Chen , Yi Wang
DOI: 10.1088/1475-7516/2010/04/027
关键词:
摘要: In quasi-single field inflation models, massive isocurvature modes, that are coupled to the inflaton and have mass of order Hubble parameter, can nontrivial impacts on density perturbations, especially non-Gaussianities. We study a simple example in terms turning trajectory. Large bispectra with one-parameter family novel shapes arise, lying between well-known local equilateral shape. The trispectra also be very large its magnitude tNL much larger than fNL2.
harvard.edu
core.ac.uk
sci-hub.se 参考文章(101)
David Langlois, Sébastien Renaux-Petel, Danièle A. Steer, Takahiro Tanaka, Primordial Fluctuations and Non-Gaussianities in Multifield Dirac-Born-Infeld Inflation Physical Review Letters. ,vol. 101, pp. 061301- ,(2008) , 10.1103/PHYSREVLETT.101.061301
Xingang Chen, Multithroat brane inflation Physical Review D. ,vol. 71, pp. 063506- ,(2005) , 10.1103/PHYSREVD.71.063506
Frederico Arroja, Shuntaro Mizuno, Kazuya Koyama, Takahiro Tanaka, Full trispectrum in single field DBI inflation Physical Review D. ,vol. 80, pp. 043527- ,(2009) , 10.1103/PHYSREVD.80.043527
Sabino Matarrese, Øystein Rudjord, Xiaohong Lan, Domenico Marinucci, Frode K. Hansen, Michele Liguori, Directional Variations of the Non-Gaussianity Parameter f_NL The Astrophysical Journal. ,vol. 708, pp. 1321- 1325 ,(2010) , 10.1088/0004-637X/708/2/1321
A.D. Linde, A new inflationary universe scenario: A possible solution of the horizon, flatness, homogeneity, isotropy and primordial monopole problems Physics Letters B. ,vol. 108, pp. 389- 393 ,(1982) , 10.1016/0370-2693(82)91219-9
G. I. Rigopoulos, E. P. S. Shellard, B. J. W. van Tent, Large non-Gaussianity in multiple-field inflation Physical Review D. ,vol. 73, pp. 083522- ,(2006) , 10.1103/PHYSREVD.73.083522
James E Lidsey, David Seery, Primordial non-Gaussianities from multiple-field inflation Journal of Cosmology and Astroparticle Physics. ,vol. 2005, pp. 011- 011 ,(2005) , 10.1088/1475-7516/2005/09/011
Licia Verde, Sabino Matarrese, DETECTABILITY OF THE EFFECT OF INFLATIONARY NON-GAUSSIANITY ON HALO BIAS The Astrophysical Journal. ,vol. 706, ,(2009) , 10.1088/0004-637X/706/1/L91
David H. Lyth, Yeinzon Rodríguez, Inflationary prediction for primordial non-gaussianity. Physical Review Letters. ,vol. 95, pp. 121302- ,(2005) , 10.1103/PHYSREVLETT.95.121302
David H Lyth, David Wands, Generating the curvature perturbation without an inflaton Physics Letters B. ,vol. 524, pp. 5- 14 ,(2002) , 10.1016/S0370-2693(01)01366-1