Fetching the paper…

Reading the bibliography…

2011

Tilted Ekpyrosis

Fonseca, José, Wands, David

Original
PDF
Post on X

Understand

We consider a simple model of cosmological collapse driven by canonical fields with exponential potentials.

We generalise the two-field ekpyrotic collapse to consider non-orthogonal or tilted potentials and give the general condition for isocurvature field fluctuations to have a scale-invariant spectrum in this model.
In particular we show that tilted potentials allow for a slightly red spectrum of perturbations as required by current observations.
However a red spectrum of fluctuations implies that the two-field ekpyrotic phase must have a finite duration and requires a preceding phase which sets the initial conditions for what otherwise appears to be a fine-tuned trajectory in the phase space.

Tilted Ekpyrosis · Around

Built on

A. D. Linde, Chur, Switzerland: Harwood (1990) 362 p. (Contemporary concepts in physics, 5). [hep-th/0503203]
1990
Earlier work this paper cites.
M. Gasperini, G. Veneziano, Astropart. Phys. 1
1993
Earlier work this paper cites.
E. J. Copeland, A. RLiddle, D. Wands, Phys. Rev. D57
1998
Earlier work this paper cites.
K. A. Malik, D. Wands, Phys. Rev. D59
1999
Earlier work this paper cites.
E. J. Copeland, A. Mazumdar, N. J. Nunes, Phys. Rev. D60
1999
Earlier work this paper cites.
J. Khoury, B. A. Ovrut, P. J. Steinhardt, N. Turok, Phys. Rev. D64
2001
Earlier work this paper cites.
R. Kallosh, L. Kofman, A. D. Linde, Phys. Rev. D64
2001
Earlier work this paper cites.
C. Gordon, D. Wands, B. A. Bassett, R. Maartens, Phys. Rev. D63
2001
Earlier work this paper cites.
D. H. Lyth, Phys. Lett. B524
2002
Earlier work this paper cites.

Similar

F. Finelli, Phys. Lett. B545
2002
Cited alongside, same era.
I. P. C. Heard, D. Wands, Class. Quant. Grav. 19
2002
Cited alongside, same era.
P. J. Steinhardt, N. Turok, Phys. Rev. D65
2002
Cited alongside, same era.
J. Hartong, A. Ploegh, T. Van Riet, D. B. Westra, Class. Quant. Grav. 23
2006
Cited alongside, same era.
J. -L. Lehners, P. McFadden, N. Turok, P. J. Steinhardt, Phys. Rev. D76
2007
Cited alongside, same era.
E. I. Buchbinder, J. Khoury, B. A. Ovrut, Phys. Rev. D76
2007
Cited alongside, same era.
P. Creminelli, L. Senatore, JCAP 0711
2007

Then

K. Koyama, S. Mizuno, F. Vernizzi and D. Wands, JCAP 0711
Original
2007
Later among the works it cites.
A. J. Tolley, D. H. Wesley, JCAP 0705
2007
Later among the works it cites.
E. I. Buchbinder, J. Khoury, B. A. Ovrut, JHEP 0711
Original
2007
Later among the works it cites.
J. -L. Lehners, Phys. Rept. 465
Original
2008
Later among the works it cites.
T. Battefeld, Phys. Rev. D77
Original
2008
Later among the works it cites.

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.

K. Koyama, D. Wands, JCAP 0704

2007

Cited alongside, same era.

K. Koyama, S. Mizuno, D. Wands, Class. Quant. Grav. 24

2007

Cited alongside, same era.

E. Komatsu et al

Cited in the paper.

J. -L. Lehners, [arXiv:1107.4551 [hep-th]]

Cited in the paper.

D. H. Lyth, A. R. Liddle, Cambridge, UK: Cambridge Univ. Pr. (2009) 497 p

2009

Later among the works it cites.

D. Wands, Adv. Sci. Lett. 2

2009

Later among the works it cites.

D. Wands, Class. Quant. Grav. 27

2010

Later among the works it cites.