Introduction to the Number of e-Folds in Slow-Roll Inflation

被引：2

作者：

Di Marco, Alessandro ^{[1
,2
]}

Orazi, Emanuele ^{[3
,4
]}

Pradisi, Gianfranco ^{[2
,5
]}

机构：

[1] Ist Astrofis & Planetol Spaziali INAF IAPS, Ist Nazl Astrofis, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[2] Ist Nazl Fis Nucleare INFN, Sez Roma Tor Vergata, Via Ric Sci 1, I-00133 Rome, Italy

[3] Univ Fed Rio Grande do Norte, Escola Ciencia, Campus Univ, BR-59078970 Lagoa Nova, RN, Brazil

[4] Univ Fed Rio Grande do Norte, Int Inst Phys, Campus Univ, BR-59078970 Lagoa Nova, RN, Brazil

[5] Univ Roma Tor Vergata, Dipartimento Fis, Via Ric Sci 1, I-00133 Rome, Italy

来源：

UNIVERSE | 2024年 / 10卷 / 07期

关键词：

cosmology; early universe cosmology; inflation; number of e-folds; SCALAR FIELD-DYNAMICS; CHAOTIC INFLATION; DENSITY PERTURBATIONS; GRAVITATIONAL-WAVES; PARTICLE-PRODUCTION; INITIAL CONDITIONS; QUANTUM FLUCTUATIONS; TENSOR PERTURBATIONS; COSMOLOGICAL MODELS; UNIVERSE SCENARIO;

D O I：

10.3390/universe10070284

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this review, a pedagogical introduction to the concepts of slow-roll inflationary universe and number of e-folds is provided. In particular, the differences between the basic notion of number of e-folds (N-e), total number of e-folds (N-T) and number of e-folds before the end of inflation (N) are outlined. The proper application of the number of e-folds before the end of inflation is discussed both as a time-like variable for the scalar field evolution and as a key parameter for computing inflationary predictions.

引用

页数：24

共 50 条

[1] Inflation story: slow-roll and beyond
Hazra, Dhiraj Kumar
Paoletti, Daniela
Debono, Ivan
Shafieloo, Arman
Smoot, George F.
Starobinsky, Alexei A.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2021, (12):
[2] Generalized slow-roll inflation
Faraoni, V
PHYSICS LETTERS A, 2000, 269 (04) : 209 - 213
[3] Slow-roll inflation in scalar-tensor models
Granda, L. N.
Jimenez, D. F.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2019, (09):
[4] Fast Bayesian inference for slow-roll inflation
Ringeval, Christophe
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 439 (04) : 3253 - 3261
[5] Non-canonical generalizations of slow-roll inflation models
Tzirakis, Konstantinos
Kinney, William H.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2009, (01):
[6] Violation of slow-roll in nonminimal inflation
Takahashi, Tomo
Tenkanen, Tommi
Yokoyama, Shuichiro
PHYSICAL REVIEW D, 2020, 102 (04):
[7] Slow-roll inflation in the Jordan frame
Karciauskas, Mindaugas
Diaz, Jose Jaime Terente
PHYSICAL REVIEW D, 2022, 106 (08)
[8] Large slow-roll corrections to the bispectrum of noncanonical inflation
Burrage, Clare
Ribeiro, Raquel H.
Seery, David
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2011, (07):
[9] The importance of slow-roll corrections during multi-field inflation
Avgoustidis, Anastasios
Cremonini, Sera
Davis, Anne-Christine
Ribeiro, Raquel H.
Turzynski, Krzysztof
Watson, Scott
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2012, (02):
[10] Slow-roll inflation at N3LO
Auclair, Pierre
Ringeval, Christophe
PHYSICAL REVIEW D, 2022, 106 (06)

← 1 2 3 4 5 →