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Title: Inflatable Dark Matter

Abstract

We describe a general scenario, dubbed “Inflatable Dark Matter”, in which the density of dark matter particles can be reduced through a short period of late-time inflation in the early universe. The overproduction of dark matter that is predicted within many otherwise well-motivated models of new physics can be elegantly remedied within this context, without the need to tune underlying parameters or to appeal to anthropic considerations. Thermal relics that would otherwise be disfavored can easily be accommodated within this class of scenarios, including dark matter candidates that are very heavy or very light. Furthermore, the non-thermal abundance of GUT or Planck scale axions can be brought to acceptable levels, without invoking anthropic tuning of initial conditions. Additionally, a period of late-time inflation could have occurred over a wide range of scales from ~ MeV to the weak scale or above, and could have been triggered by physics within a hidden sector, with small but not necessarily negligible couplings to the Standard Model.

Authors:
 [1];  [2];  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. C.N. Yang Inst. for Theoretical Physics, Stony Brook, NY (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1221332
Alternate Identifier(s):
OSTI ID: 1235763; OSTI ID: 1260146
Report Number(s):
FERMILAB-PUB-15-318-A; YITP-SB-15-26; BNL-112230-2016-JA
Journal ID: ISSN 0031-9007; arXiv eprint number arXiv:1507.08660
Grant/Contract Number:  
AC02-07CH11359; SC0012704; FG02-13ER41958; SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 116; Journal Issue: 3; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; HEP; matter; phenomenology; planck; SM; scales

Citation Formats

Davoudiasl, Hooman, Hooper, Dan, and McDermott, Samuel D. Inflatable Dark Matter. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.116.031303.
Davoudiasl, Hooman, Hooper, Dan, & McDermott, Samuel D. Inflatable Dark Matter. United States. doi:10.1103/PhysRevLett.116.031303.
Davoudiasl, Hooman, Hooper, Dan, and McDermott, Samuel D. Fri . "Inflatable Dark Matter". United States. doi:10.1103/PhysRevLett.116.031303. https://www.osti.gov/servlets/purl/1221332.
@article{osti_1221332,
title = {Inflatable Dark Matter},
author = {Davoudiasl, Hooman and Hooper, Dan and McDermott, Samuel D.},
abstractNote = {We describe a general scenario, dubbed “Inflatable Dark Matter”, in which the density of dark matter particles can be reduced through a short period of late-time inflation in the early universe. The overproduction of dark matter that is predicted within many otherwise well-motivated models of new physics can be elegantly remedied within this context, without the need to tune underlying parameters or to appeal to anthropic considerations. Thermal relics that would otherwise be disfavored can easily be accommodated within this class of scenarios, including dark matter candidates that are very heavy or very light. Furthermore, the non-thermal abundance of GUT or Planck scale axions can be brought to acceptable levels, without invoking anthropic tuning of initial conditions. Additionally, a period of late-time inflation could have occurred over a wide range of scales from ~ MeV to the weak scale or above, and could have been triggered by physics within a hidden sector, with small but not necessarily negligible couplings to the Standard Model.},
doi = {10.1103/PhysRevLett.116.031303},
journal = {Physical Review Letters},
number = 3,
volume = 116,
place = {United States},
year = {2016},
month = {1}
}

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Cited by: 10 works
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    Works referencing / citing this record:

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