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Title: Swampland conjectures and slow-roll thawing quintessence

Abstract

We examine the Swampland conjectures in the context of generic slow-roll thawing quintessence models. Defining λ≡|V′(ϕi)/V(ϕi)| and K≡1−4V′′(ϕi)/3V(ϕi)−−−−−−−−−−−−−−−−√, where ϕi is the initial value of ϕ, we find regions of parameter space consistent with both observational data and with the refined de Sitter conjecture, and we show that all such models satisfy the distance conjecture. We quantify the degree of fine-tuning on λ needed to achieve these results.

Authors:
ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1661699
Alternate Identifier(s):
OSTI ID: 1670438; OSTI ID: 1783238
Grant/Contract Number:  
SC0019207
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 102 Journal Issue: 6; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Dark energy; Strings & branes

Citation Formats

Storm, S. David, and Scherrer, Robert J. Swampland conjectures and slow-roll thawing quintessence. United States: N. p., 2020. Web. https://doi.org/10.1103/PhysRevD.102.063519.
Storm, S. David, & Scherrer, Robert J. Swampland conjectures and slow-roll thawing quintessence. United States. https://doi.org/10.1103/PhysRevD.102.063519
Storm, S. David, and Scherrer, Robert J. Tue . "Swampland conjectures and slow-roll thawing quintessence". United States. https://doi.org/10.1103/PhysRevD.102.063519.
@article{osti_1661699,
title = {Swampland conjectures and slow-roll thawing quintessence},
author = {Storm, S. David and Scherrer, Robert J.},
abstractNote = {We examine the Swampland conjectures in the context of generic slow-roll thawing quintessence models. Defining λ≡|V′(ϕi)/V(ϕi)| and K≡1−4V′′(ϕi)/3V(ϕi)−−−−−−−−−−−−−−−−√, where ϕi is the initial value of ϕ, we find regions of parameter space consistent with both observational data and with the refined de Sitter conjecture, and we show that all such models satisfy the distance conjecture. We quantify the degree of fine-tuning on λ needed to achieve these results.},
doi = {10.1103/PhysRevD.102.063519},
journal = {Physical Review D},
number = 6,
volume = 102,
place = {United States},
year = {2020},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.102.063519

Figures / Tables:

FIG. 1 FIG. 1: For slow-roll thawing quintessence, the field excursion |Δϕ| divided by λ≡ |V' (ϕi)/V(ϕi)| as a function of K ≡ $\sqrt{1 − 4V ''(ϕ_{i})/3V(ϕ_{i}})$ , where ϕi is the initial value of ϕ.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.