Home > Research > Publications & Outputs > Extra dimensions and inflation
View graph of relations

Extra dimensions and inflation

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published

Standard

Extra dimensions and inflation. / Mazumdar, Anupam.
In: Physics Letters B, Vol. 469, No. 1-4, 09.12.1999, p. 55-60.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Mazumdar, A 1999, 'Extra dimensions and inflation', Physics Letters B, vol. 469, no. 1-4, pp. 55-60. https://doi.org/10.1016/S0370-2693(99)01256-3

APA

Vancouver

Mazumdar A. Extra dimensions and inflation. Physics Letters B. 1999 Dec 9;469(1-4):55-60. doi: 10.1016/S0370-2693(99)01256-3

Author

Mazumdar, Anupam. / Extra dimensions and inflation. In: Physics Letters B. 1999 ; Vol. 469, No. 1-4. pp. 55-60.

Bibtex

@article{f02bbdca15bf4b788feba65659b351a0,
title = "Extra dimensions and inflation",
abstract = "It has been proposed that, without invoking supersymmetry, it is possible to solve the hierarchy problem provided the fundamental scale in the higher dimensional theory is at a much lower scale than the Planck scale. In this paper we consider a toy model where we allow $4+d$ dimensions to evolve from a region determined by the new fundamental scale, which is in our case is electro-weak scale. We further investigate whether it is possible to inflate not only the 3 uncompactified dimensions but also the extra dimensions. We require around 70 e-foldings to stabilize the size of two extra dimensions from $M_{\rm EW}^{-1}$ to the required 1 mm size. This can be easily achieved during inflation, but once inflation ends their evolution is governed by the dynamical history of the universe in a similar way that of Brans-Dicke field in generalized Einstein theories. We also show that we achieve the right level of density contrast without invoking any specific potential. The density contrast depends on the number of extra dimensions and upon the amplitude of the potential.",
author = "Anupam Mazumdar",
note = "4 pages, Final version to appear in Physics Letters B",
year = "1999",
month = dec,
day = "9",
doi = "10.1016/S0370-2693(99)01256-3",
language = "English",
volume = "469",
pages = "55--60",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "1-4",

}

RIS

TY - JOUR

T1 - Extra dimensions and inflation

AU - Mazumdar, Anupam

N1 - 4 pages, Final version to appear in Physics Letters B

PY - 1999/12/9

Y1 - 1999/12/9

N2 - It has been proposed that, without invoking supersymmetry, it is possible to solve the hierarchy problem provided the fundamental scale in the higher dimensional theory is at a much lower scale than the Planck scale. In this paper we consider a toy model where we allow $4+d$ dimensions to evolve from a region determined by the new fundamental scale, which is in our case is electro-weak scale. We further investigate whether it is possible to inflate not only the 3 uncompactified dimensions but also the extra dimensions. We require around 70 e-foldings to stabilize the size of two extra dimensions from $M_{\rm EW}^{-1}$ to the required 1 mm size. This can be easily achieved during inflation, but once inflation ends their evolution is governed by the dynamical history of the universe in a similar way that of Brans-Dicke field in generalized Einstein theories. We also show that we achieve the right level of density contrast without invoking any specific potential. The density contrast depends on the number of extra dimensions and upon the amplitude of the potential.

AB - It has been proposed that, without invoking supersymmetry, it is possible to solve the hierarchy problem provided the fundamental scale in the higher dimensional theory is at a much lower scale than the Planck scale. In this paper we consider a toy model where we allow $4+d$ dimensions to evolve from a region determined by the new fundamental scale, which is in our case is electro-weak scale. We further investigate whether it is possible to inflate not only the 3 uncompactified dimensions but also the extra dimensions. We require around 70 e-foldings to stabilize the size of two extra dimensions from $M_{\rm EW}^{-1}$ to the required 1 mm size. This can be easily achieved during inflation, but once inflation ends their evolution is governed by the dynamical history of the universe in a similar way that of Brans-Dicke field in generalized Einstein theories. We also show that we achieve the right level of density contrast without invoking any specific potential. The density contrast depends on the number of extra dimensions and upon the amplitude of the potential.

U2 - 10.1016/S0370-2693(99)01256-3

DO - 10.1016/S0370-2693(99)01256-3

M3 - Journal article

VL - 469

SP - 55

EP - 60

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1-4

ER -