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Loop quantum cosmology and slow roll inflation

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Loop quantum cosmology and slow roll inflation. / Ashtekar, Abhay; Sloan, David.
In: Physics Letters B, Vol. 694, No. 2, 2010, p. 108-112.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Ashtekar, A & Sloan, D 2010, 'Loop quantum cosmology and slow roll inflation', Physics Letters B, vol. 694, no. 2, pp. 108-112. https://doi.org/10.1016/j.physletb.2010.09.058

APA

Ashtekar, A., & Sloan, D. (2010). Loop quantum cosmology and slow roll inflation. Physics Letters B, 694(2), 108-112. https://doi.org/10.1016/j.physletb.2010.09.058

Vancouver

Ashtekar A, Sloan D. Loop quantum cosmology and slow roll inflation. Physics Letters B. 2010;694(2):108-112. doi: 10.1016/j.physletb.2010.09.058

Author

Ashtekar, Abhay ; Sloan, David. / Loop quantum cosmology and slow roll inflation. In: Physics Letters B. 2010 ; Vol. 694, No. 2. pp. 108-112.

Bibtex

@article{d43108730fc24bb3a250119ca60c8572,
title = "Loop quantum cosmology and slow roll inflation",
abstract = "In loop quantum cosmology (LQC) the big bang is replaced by a quantum bounce which is followed by a robust phase of super-inflation. Rather than growing unboundedly in the past, the Hubble parameter vanishes at the bounce and attains a finite universal maximum at the end of super-inflation. These novel features lead to an unforeseen implication: in presence of suitable potentials all LQC dynamical trajectories are funneled to conditions which virtually guarantee slow roll inflation with more than 68 e-foldings, without any input from the pre-big bang regime. This is in striking contrast to certain results in general relativity, where it is argued that the a priori probability of obtaining a slow roll with 68 or more e-foldings is suppressed by a factor e−204.",
keywords = "Loop quantum cosmology, Inflation probability",
author = "Abhay Ashtekar and David Sloan",
year = "2010",
doi = "10.1016/j.physletb.2010.09.058",
language = "English",
volume = "694",
pages = "108--112",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "2",

}

RIS

TY - JOUR

T1 - Loop quantum cosmology and slow roll inflation

AU - Ashtekar, Abhay

AU - Sloan, David

PY - 2010

Y1 - 2010

N2 - In loop quantum cosmology (LQC) the big bang is replaced by a quantum bounce which is followed by a robust phase of super-inflation. Rather than growing unboundedly in the past, the Hubble parameter vanishes at the bounce and attains a finite universal maximum at the end of super-inflation. These novel features lead to an unforeseen implication: in presence of suitable potentials all LQC dynamical trajectories are funneled to conditions which virtually guarantee slow roll inflation with more than 68 e-foldings, without any input from the pre-big bang regime. This is in striking contrast to certain results in general relativity, where it is argued that the a priori probability of obtaining a slow roll with 68 or more e-foldings is suppressed by a factor e−204.

AB - In loop quantum cosmology (LQC) the big bang is replaced by a quantum bounce which is followed by a robust phase of super-inflation. Rather than growing unboundedly in the past, the Hubble parameter vanishes at the bounce and attains a finite universal maximum at the end of super-inflation. These novel features lead to an unforeseen implication: in presence of suitable potentials all LQC dynamical trajectories are funneled to conditions which virtually guarantee slow roll inflation with more than 68 e-foldings, without any input from the pre-big bang regime. This is in striking contrast to certain results in general relativity, where it is argued that the a priori probability of obtaining a slow roll with 68 or more e-foldings is suppressed by a factor e−204.

KW - Loop quantum cosmology

KW - Inflation probability

U2 - 10.1016/j.physletb.2010.09.058

DO - 10.1016/j.physletb.2010.09.058

M3 - Journal article

VL - 694

SP - 108

EP - 112

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 2

ER -