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  • 1509.01247

    Rights statement: © 2015 American Physical Society

    Accepted author manuscript, 194 KB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

  • PhysRevD.92.124051

    Rights statement: © 2015 American Physical Society

    Final published version, 156 KB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

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Nonlocal gravity in D-dimensions: propagators, entropy, and bouncing cosmology

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Nonlocal gravity in D-dimensions : propagators, entropy, and bouncing cosmology. / Conroy, Aindriu; Mazumdar, Anupam; Talaganis, Spyridon; Teimouri, Ilia.

In: Physical Review D, Vol. 92, No. 12, 124501, 22.12.2015.

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@article{94b8992b5b6a4fb3badb4a4340a9a376,
title = "Nonlocal gravity in D-dimensions: propagators, entropy, and bouncing cosmology",
abstract = "We present the graviton propagator for an infinite derivative, D-dimensional, nonlocal action, up to quadratic order in curvature around a Minkowski background, and discuss the conditions required for this class of gravity theory to be ghost-free. We then study the gravitational entropy for de-Sitter and anti-de Sitter backgrounds, before comparing with a recently derived result for a Schwarzschild black hole, generalized to arbitrary D dimensions, whereby the entropy is given simply by the area law. A novel approach of decomposing the entropy into its (r,t) and spherical components is adopted in order to illustrate the differences more clearly. We conclude with a discussion of de-Sitter entropy in the framework of a nonsingular bouncing cosmology.",
keywords = "hep-th, astro-ph.CO, gr-qc, hep-ph",
author = "Aindriu Conroy and Anupam Mazumdar and Spyridon Talaganis and Ilia Teimouri",
note = "{\textcopyright} 2015 American Physical Society",
year = "2015",
month = dec,
day = "22",
doi = "10.1103/PhysRevD.92.124051",
language = "English",
volume = "92",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "12",

}

RIS

TY - JOUR

T1 - Nonlocal gravity in D-dimensions

T2 - propagators, entropy, and bouncing cosmology

AU - Conroy, Aindriu

AU - Mazumdar, Anupam

AU - Talaganis, Spyridon

AU - Teimouri, Ilia

N1 - © 2015 American Physical Society

PY - 2015/12/22

Y1 - 2015/12/22

N2 - We present the graviton propagator for an infinite derivative, D-dimensional, nonlocal action, up to quadratic order in curvature around a Minkowski background, and discuss the conditions required for this class of gravity theory to be ghost-free. We then study the gravitational entropy for de-Sitter and anti-de Sitter backgrounds, before comparing with a recently derived result for a Schwarzschild black hole, generalized to arbitrary D dimensions, whereby the entropy is given simply by the area law. A novel approach of decomposing the entropy into its (r,t) and spherical components is adopted in order to illustrate the differences more clearly. We conclude with a discussion of de-Sitter entropy in the framework of a nonsingular bouncing cosmology.

AB - We present the graviton propagator for an infinite derivative, D-dimensional, nonlocal action, up to quadratic order in curvature around a Minkowski background, and discuss the conditions required for this class of gravity theory to be ghost-free. We then study the gravitational entropy for de-Sitter and anti-de Sitter backgrounds, before comparing with a recently derived result for a Schwarzschild black hole, generalized to arbitrary D dimensions, whereby the entropy is given simply by the area law. A novel approach of decomposing the entropy into its (r,t) and spherical components is adopted in order to illustrate the differences more clearly. We conclude with a discussion of de-Sitter entropy in the framework of a nonsingular bouncing cosmology.

KW - hep-th

KW - astro-ph.CO

KW - gr-qc

KW - hep-ph

U2 - 10.1103/PhysRevD.92.124051

DO - 10.1103/PhysRevD.92.124051

M3 - Journal article

VL - 92

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 12

M1 - 124501

ER -