DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Axion misalignment driven to the hilltop

Abstract

The QCD axion serves as a well-motivated dark matter candidate and the misalignment mechanism is known to reproduce the observed abundance with a decay constant $$f_a \simeq \mathcal{O}(10^{12})$$ GeV for a misalignment angle $$\theta_{\rm mis} \simeq \mathcal{O}(1)$$. While $$f_a \ll 10^{12}$$ GeV is of great experimental interest, the misalignment mechanism requires the axion to be very close to the hilltop, i.e. $$\theta_{\rm mis} \simeq \pi$$. This particular choice of $$\theta_{\rm mis}$$ has been understood as fine-tuning the initial condition. We offer a dynamical explanation for $$\theta_{\rm mis} \simeq \pi$$ in a class of models. The axion dynamically relaxes to the minimum of the potential by virtue of an enhanced mass in the early universe. This minimum is subsequently converted to a hilltop because the CP phase of the theory shifts by $$\pi$$ when one contribution becomes subdominant to another with an opposite sign. We demonstrate explicit and viable examples in supersymmetric models where the higher dimensional Higgs coupling with the inflaton naturally achieves both criteria. Associated phenomenology includes a strikingly sharp prediction of $$3 \times 10^9$$ GeV $$\lesssim f_a \lesssim 10^{10}$$ GeV and the absence of isocurvature perturbation.

Authors:
 [1]; ORCiD logo [1];  [2]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Leinweber Center for Theoretical Physics
  2. Inst. for Advanced Study, Princeton, NJ (United States)
Publication Date:
Research Org.:
Institute for Advanced Study, Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1596295
Grant/Contract Number:  
SC0009988; SC0019225
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 5; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Cosmology of Theories beyond the SM; Confi nement; Supersymmetric Gauge Theory; Supersymmetric Standard Model

Citation Formats

Co, Raymond T., Gonzalez, Eric, and Harigaya, Keisuke. Axion misalignment driven to the hilltop. United States: N. p., 2019. Web. doi:10.1007/JHEP05(2019)163.
Co, Raymond T., Gonzalez, Eric, & Harigaya, Keisuke. Axion misalignment driven to the hilltop. United States. https://doi.org/10.1007/JHEP05(2019)163
Co, Raymond T., Gonzalez, Eric, and Harigaya, Keisuke. Mon . "Axion misalignment driven to the hilltop". United States. https://doi.org/10.1007/JHEP05(2019)163. https://www.osti.gov/servlets/purl/1596295.
@article{osti_1596295,
title = {Axion misalignment driven to the hilltop},
author = {Co, Raymond T. and Gonzalez, Eric and Harigaya, Keisuke},
abstractNote = {The QCD axion serves as a well-motivated dark matter candidate and the misalignment mechanism is known to reproduce the observed abundance with a decay constant $f_a \simeq \mathcal{O}(10^{12})$ GeV for a misalignment angle $\theta_{\rm mis} \simeq \mathcal{O}(1)$. While $f_a \ll 10^{12}$ GeV is of great experimental interest, the misalignment mechanism requires the axion to be very close to the hilltop, i.e. $\theta_{\rm mis} \simeq \pi$. This particular choice of $\theta_{\rm mis}$ has been understood as fine-tuning the initial condition. We offer a dynamical explanation for $\theta_{\rm mis} \simeq \pi$ in a class of models. The axion dynamically relaxes to the minimum of the potential by virtue of an enhanced mass in the early universe. This minimum is subsequently converted to a hilltop because the CP phase of the theory shifts by $\pi$ when one contribution becomes subdominant to another with an opposite sign. We demonstrate explicit and viable examples in supersymmetric models where the higher dimensional Higgs coupling with the inflaton naturally achieves both criteria. Associated phenomenology includes a strikingly sharp prediction of $3 \times 10^9$ GeV $\lesssim f_a \lesssim 10^{10}$ GeV and the absence of isocurvature perturbation.},
doi = {10.1007/JHEP05(2019)163},
journal = {Journal of High Energy Physics (Online)},
number = 5,
volume = 2019,
place = {United States},
year = {2019},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Constraints on axions from SN 1987A
journal, March 1988


The not-so-harmless axion
journal, January 1983


Naturally weak CP violation
journal, March 1984


Sine-Gordon parametric resonance
journal, March 1999


Cosmology of the invisible axion
journal, January 1983


Resonant absorption of bosonic dark matter in molecules
text, January 2017


Axion Isocurvature and Magnetic Monopoles
text, January 2015


Topological susceptibility and QCD axion mass: QED and NNLO corrections
journal, March 2019

  • Gorghetto, Marco; Villadoro, Giovanni
  • Journal of High Energy Physics, Vol. 2019, Issue 3
  • DOI: 10.1007/JHEP03(2019)033

QCD Axion Dark Matter with a Small Decay Constant
journal, May 2018


The dark-matter axion mass
text, January 2017


The dark-matter axion mass
journal, November 2017


The cosmology of string theoretic axions
journal, November 1997


Solving the tension between high-scale inflation and axion isocurvature perturbations
journal, June 2014


Can confinement ensure natural CP invariance of strong interactions?
journal, April 1980


Dynamical supersymmetry breaking in supersymmetric QCD
journal, July 1984


Axion Dark Matter Detection Using Atomic Transitions
journal, November 2014


Problem of Strong P and T Invariance in the Presence of Instantons
journal, January 1978


Resonantly Detecting Axion-Mediated Forces with Nuclear Magnetic Resonance
journal, October 2014


What is the value of the neutron electric dipole moment in the Kobayashi-Maskawa model?
journal, March 1982


Strongly broken Peccei-Quinn symmetry in the early Universe
journal, October 2015


Inflation and Invisible Axions
journal, May 1988


Axion Misalignment Driven to the Bottom
text, January 2018


Early Cosmological Period of QCD Confinement
text, January 2018


Flavor conserving CP violation in invisible axion models
journal, October 1986


Solving the Strong CP Problem without the Peccei-Quinn Symmetry
journal, July 1984


Towards a medium-scale axion helioscope and haloscope
journal, November 2017


Diluting the inflationary axion fluctuation by a stronger QCD in the early Universe
text, January 2015


Thermalization after/during reheating
journal, May 2014

  • Harigaya, Keisuke; Mukaida, Kyohei
  • Journal of High Energy Physics, Vol. 2014, Issue 5
  • DOI: 10.1007/JHEP05(2014)006

Suppressing the QCD Axion Abundance by Hidden Monopoles
text, January 2015


Strongly broken Peccei-Quinn symmetry in the early Universe
text, January 2015


Suppressing the QCD axion abundance by hidden monopoles
journal, February 2016


CP Conservation in the Presence of Pseudoparticles
journal, June 1977


Evolution of string-wall networks and axionic domain wall problem
journal, August 2011

  • Hiramatsu, Takashi; Kawasaki, Masahiro; Saikawa, Ken'ichi
  • Journal of Cosmology and Astroparticle Physics, Vol. 2011, Issue 08
  • DOI: 10.1088/1475-7516/2011/08/030

Calculation of the axion mass based on high-temperature lattice quantum chromodynamics
text, January 2016


Diluting the inflationary axion fluctuation by a stronger QCD in the early Universe
journal, November 2015


Weak-Interaction Singlet and Strong CP Invariance
journal, July 1979


Cosmologically safe QCD axion as a present from extra dimension
journal, November 2015


Axion misalignment driven to the bottom
journal, May 2019

  • Co, Raymond T.; Gonzalez, Eric; Harigaya, Keisuke
  • Journal of High Energy Physics, Vol. 2019, Issue 5
  • DOI: 10.1007/JHEP05(2019)162

QCD axion dark matter from long-lived domain walls during matter domination
text, January 2018


Moduli decay in the hot early Universe
text, January 2006


Unified models of the QCD axion and supersymmetry breaking
journal, August 2017


Axion miniclusters and Bose stars
journal, November 1993


Axions from strings: the attractive solution
journal, July 2018

  • Gorghetto, Marco; Hardy, Edward; Villadoro, Giovanni
  • Journal of High Energy Physics, Vol. 2018, Issue 7
  • DOI: 10.1007/JHEP07(2018)151

Suppressing Isocurvature Perturbations of QCD Axion Dark Matter
text, January 2013


Calculation of the axion mass based on high-temperature lattice quantum chromodynamics
journal, November 2016


Towards a medium-scale axion helioscope and haloscope
text, January 2017


Dynamics of oscillating scalar field in thermal environment
journal, January 2013


Scaling properties of cosmological axion strings
journal, January 2019


Axions from SN1987A
journal, May 1988


Cosmic axions from cosmic strings
journal, November 1986


Resonant Absorption of Bosonic Dark Matter in Molecules
journal, October 2018


A cosmological bound on the invisible axion
journal, January 1983


Bounds on exotic-particle interactions from SN1987A
journal, May 1988


A minimal model with natural suppresion of strong CP violation
journal, September 1991


Updating the axion cold dark matter energy density
journal, September 2008

  • Bae, Kyu Jung; Huh, Ji-Haeng; Kim, Jihn E.
  • Journal of Cosmology and Astroparticle Physics, Vol. 2008, Issue 09
  • DOI: 10.1088/1475-7516/2008/09/005

Topology in full QCD at high temperature: a multicanonical approach
text, January 2018


Axion cosmology with long-lived domain walls
journal, January 2013

  • Hiramatsu, Takashi; Kawasaki, Masahiro; Saikawa, Ken'ichi
  • Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 01
  • DOI: 10.1088/1475-7516/2013/01/001

The topological susceptibility in finite temperature QCD and axion cosmology
journal, November 2016


Chiral quarks and the non-relativistic quark model
journal, March 1984


QCD axion dark matter from long-lived domain walls during matter domination
journal, July 2018


Topology in full QCD at high temperature: a multicanonical approach
journal, November 2018

  • Bonati, Claudio; D’Elia, Massimo; Martinelli, Guido
  • Journal of High Energy Physics, Vol. 2018, Issue 11
  • DOI: 10.1007/JHEP11(2018)170

Early Cosmological Period of QCD Confinement
journal, March 2019


Moduli decay in the hot early Universe
journal, June 2006


Axion Isocurvature and Magnetic Monopoles
journal, April 2016


Constraints on light particles from supernova SN 1987A
journal, July 1987


Axion Miniclusters and Bose Stars
text, January 1993


Unified Models of the QCD Axion and Supersymmetry Breaking
text, January 2017


A New Light Boson?
journal, January 1978


Thermalization after/during Reheating
text, January 2013


Suppressing isocurvature perturbations of QCD axion dark matter
journal, December 2013


The Cosmology of String Theoretic Axions
text, January 1996


Chiral estimate of the electric dipole moment of the neutron in quantum chromodynamics
journal, December 1979


Improved Experimental Limit on the Electric Dipole Moment of the Neutron
journal, September 2006


Symmetry Breaking through Bell-Jackiw Anomalies
journal, July 1976


Long-term dynamics of cosmological axion strings
journal, September 2018

  • Kawasaki, Masahiro; Sekiguchi, Toyokazu; Yamaguchi, Masahide
  • Progress of Theoretical and Experimental Physics, Vol. 2018, Issue 9
  • DOI: 10.1093/ptep/pty098

Dielectric Haloscopes: A New Way to Detect Axion Dark Matter
journal, March 2017


Search for Invisible Axion Dark Matter with the Axion Dark Matter Experiment
journal, April 2018


Anharmonic evolution of the cosmic axion density spectrum
journal, December 1994


Axion cosmology with a stronger QCD in the early universe
journal, April 1997


Solving the strong CP problem with supersymmetry
journal, August 2001


Improved limit on the electric dipole moment of the electron
October 2018


Naive dimensional analysis and supersymmetry
journal, February 1998


Counting 4π's in strongly coupled supersymmetry
journal, October 1997


Nonlinear axion dynamics and the formation of cosmological pseudosolitons
journal, May 1994


Works referencing / citing this record:

Misalignment & Co.: (pseudo-)scalar and vector dark matter with curvature couplings
journal, February 2020

  • Alonso-Álvarez, Gonzalo; Hugle, Thomas; Jaeckel, Joerg
  • Journal of Cosmology and Astroparticle Physics, Vol. 2020, Issue 02
  • DOI: 10.1088/1475-7516/2020/02/014