Dynamical axion misalignment with small instantons

Buen-Abad, Manuel A.; Fan, JiJi

doi:10.1007/JHep12(2019)161

Title: Dynamical axion misalignment with small instantons

Abstract

We present a new mechanism to relax the initial misalignment angle of the QCD axion and raise the cosmological bound on the axion decay constant. The QCD axion receives a contribution from small UV instantons during inflation, which raises its mass to the inflationary Hubble scale. This makes the axion start rolling down its potential early on. In the scenario, the standard model Yukawa couplings of quarks are dynamical, being of order one during the inflationary era and reducing to their standard model values once it ends. This means that after inflation the contribution of the small instantons is suppressed, and the axion potential reduces to the standard one from the usual IR instantons. As a result, when the axion starts to oscillate again after inflation, the initial misalignment angle is suppressed due to the dynamics during inflation. While the general idea of dynamical axion misalignment has been discussed in the literature before, we present in detail the major bottleneck on the mismatching between the minima of the axion potentials during and after inflation, and how it is circumvented in our scenario via the Froggatt-Nielsen mechanism. Taking into account of all the constraints, we find that the axion decay constantmore »« less

Authors:

Buen-Abad, Manuel A. ^[1]; Fan, JiJi ^[1]

Brown Univ., Providence, RI (United States)

Publication Date:: 2019-12-30

Research Org.:: Brown Univ., Providence, RI (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)

OSTI Identifier:: 1596979

Grant/Contract Number:: SC0010010; PHY-1748958

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: 12; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Solitons Monopoles and Instantons; Cosmology of Theories beyond the SM; Spontaneous Symmetry Breaking

Citation Formats


                    Buen-Abad, Manuel A., and Fan, JiJi. Dynamical axion misalignment with small instantons.  United States: N. p., 2019. 
Web.  doi:10.1007/JHep12(2019)161.

Copy to clipboard


                    Buen-Abad, Manuel A., & Fan, JiJi. Dynamical axion misalignment with small instantons.  United States.  https://doi.org/10.1007/JHep12(2019)161

Copy to clipboard


                    Buen-Abad, Manuel A., and Fan, JiJi. Mon .  
"Dynamical axion misalignment with small instantons".  United States.  https://doi.org/10.1007/JHep12(2019)161.  https://www.osti.gov/servlets/purl/1596979.

Copy to clipboard


                    
@article{osti_1596979,

  title        = {Dynamical axion misalignment with small instantons},

  author       = {Buen-Abad, Manuel A. and Fan, JiJi},

  abstractNote = {We present a new mechanism to relax the initial misalignment angle of the QCD axion and raise the cosmological bound on the axion decay constant. The QCD axion receives a contribution from small UV instantons during inflation, which raises its mass to the inflationary Hubble scale. This makes the axion start rolling down its potential early on. In the scenario, the standard model Yukawa couplings of quarks are dynamical, being of order one during the inflationary era and reducing to their standard model values once it ends. This means that after inflation the contribution of the small instantons is suppressed, and the axion potential reduces to the standard one from the usual IR instantons. As a result, when the axion starts to oscillate again after inflation, the initial misalignment angle is suppressed due to the dynamics during inflation. While the general idea of dynamical axion misalignment has been discussed in the literature before, we present in detail the major bottleneck on the mismatching between the minima of the axion potentials during and after inflation, and how it is circumvented in our scenario via the Froggatt-Nielsen mechanism. Taking into account of all the constraints, we find that the axion decay constant could be raised to the GUT scale, 1015 GeV, in our scenario.},

  doi          = {10.1007/JHep12(2019)161},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 12,

  volume       = 2019,

  place        = {United States},

  year         = {2019},

  month        = {12}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1007/JHep12(2019)161

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 2 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

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

Kim, Jihn E.
Physical Review Letters, Vol. 43, Issue 2
DOI: 10.1103/PhysRevLett.43.103

Hunting the flavon
journal, September 2016

Bauer, Martin; Schell, Torben; Plehn, Tilman
Physical Review D, Vol. 94, Issue 5
DOI: 10.1103/PhysRevD.94.056003

The not-so-harmless axion
journal, January 1983

Dine, Michael; Fischler, Willy
Physics Letters B, Vol. 120, Issue 1-3
DOI: 10.1016/0370-2693(83)90639-1

Axions in string theory
journal, June 2006

Svrcek, Peter; Witten, Edward
Journal of High Energy Physics, Vol. 2006, Issue 06
DOI: 10.1088/1126-6708/2006/06/051

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

Cosmology of the invisible axion
journal, January 1983

Preskill, John; Wise, Mark B.; Wilczek, Frank
Physics Letters B, Vol. 120, Issue 1-3
DOI: 10.1016/0370-2693(83)90637-8

The anatomy of neutral scalars with FCNCs in the flavour precision era
journal, June 2013

Buras, Andrzej J.; De Fazio, Fulvia; Girrbach, Jennifer
Journal of High Energy Physics, Vol. 2013, Issue 6
DOI: 10.1007/JHEP06(2013)111

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

Shifman, M. A.; Vainshtein, A. I.; Zakharov, V. I.
Nuclear Physics B, Vol. 166, Issue 3
DOI: 10.1016/0550-3213(80)90209-6

The cosmology of string theoretic axions
journal, November 1997

Banks, Tom; Dine, Michael
Nuclear Physics B, Vol. 505, Issue 1-2
DOI: 10.1016/S0550-3213(97)00413-6

Cosmological abundance of the QCD axion coupled to hidden photons
journal, June 2018

Kitajima, Naoya; Sekiguchi, Toyokazu; Takahashi, Fuminobu
Physics Letters B, Vol. 781
DOI: 10.1016/j.physletb.2018.04.024

Mass Renormalization by Instantons and the Strong $CP$ Problem
journal, August 1988

Choi, Kiwoon; Kim, C. W.; Sze, W. K.
Physical Review Letters, Vol. 61, Issue 7
DOI: 10.1103/PhysRevLett.61.794

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

Wilczek, F.
Physical Review Letters, Vol. 40, Issue 5
DOI: 10.1103/PhysRevLett.40.279

A simple solution to the strong CP problem with a harmless axion
journal, August 1981

Dine, Michael; Fischler, Willy; Srednicki, Mark
Physics Letters B, Vol. 104, Issue 3
DOI: 10.1016/0370-2693(81)90590-6

Opening up the QCD axion window
journal, March 2018

Agrawal, Prateek; Marques-Tavares, Gustavo; Xue, Wei
Journal of High Energy Physics, Vol. 2018, Issue 3
DOI: 10.1007/JHEP03(2018)049

Raising the axion mass
journal, December 1982

Holdom, Bob; Peskin, Michael E.
Nuclear Physics B, Vol. 208, Issue 3
DOI: 10.1016/0550-3213(82)90228-0

A computation of the small instanton contribution to the axion potential
journal, January 1987

Flynn, Jonathan M.; Randall, Lisa
Nuclear Physics B, Vol. 293
DOI: 10.1016/0550-3213(87)90089-7

Factoring the strong CP problem
journal, December 2018

Agrawal, Prateek; Howe, Kiel
Journal of High Energy Physics, Vol. 2018, Issue 12
DOI: 10.1007/JHEP12(2018)029

Flavor cosmology: dynamical yukawas in the Froggatt-Nielsen mechanism
journal, December 2016

Baldes, Iason; Konstandin, Thomas; Servant, Géraldine
Journal of High Energy Physics, Vol. 2016, Issue 12
DOI: 10.1007/JHEP12(2016)073

Hybrid inflation
journal, January 1994

Linde, Andrei
Physical Review D, Vol. 49, Issue 2
DOI: 10.1103/PhysRevD.49.748

A cosmological bound on the invisible axion
journal, January 1983

Abbott, L. F.; Sikivie, P.
Physics Letters B, Vol. 120, Issue 1-3
DOI: 10.1016/0370-2693(83)90638-X

Hierarchy of quark masses, cabibbo angles and CP violation
journal, January 1979

Froggatt, C. D.; Nielsen, H. B.
Nuclear Physics B, Vol. 147, Issue 3-4
DOI: 10.1016/0550-3213(79)90316-X

Color unified dynamical axion
journal, November 2018

Gaillard, M. K.; Gavela, M. B.; Houtz, R.
The European Physical Journal C, Vol. 78, Issue 11
DOI: 10.1140/epjc/s10052-018-6396-6

The ALP miracle: unified inflaton and dark matter
journal, May 2017

Daido, Ryuji; Takahashi, Fuminobu; Yin, Wen
Journal of Cosmology and Astroparticle Physics, Vol. 2017, Issue 05
DOI: 10.1088/1475-7516/2017/05/044

Chiral dynamics in the large N limit
journal, January 1980

Di Vecchia, P.; Veneziano, G.
Nuclear Physics B, Vol. 171
DOI: 10.1016/0550-3213(80)90370-3

Axion cosmology
journal, July 2016

Marsh, David J. E.
Physics Reports, Vol. 643
DOI: 10.1016/j.physrep.2016.06.005

String theory and the strong CP problem
journal, August 1986

Dine, Michael; Seiberg, Nathan
Nuclear Physics B, Vol. 273, Issue 1
DOI: 10.1016/0550-3213(86)90043-X

The quark electric dipole moment and the induced θ-term in the Kobayashi-Maskawa model
journal, June 1986

Khriplovich, I. B.
Physics Letters B, Vol. 173, Issue 2
DOI: 10.1016/0370-2693(86)90245-5

The ALP miracle revisited
journal, February 2018

Daido, Ryuji; Takahashi, Fuminobu; Yin, Wen
Journal of High Energy Physics, Vol. 2018, Issue 2
DOI: 10.1007/JHEP02(2018)104

Broadband and Resonant Approaches to Axion Dark Matter Detection
journal, September 2016

Kahn, Yonatan; Safdi, Benjamin R.; Thaler, Jesse
Physical Review Letters, Vol. 117, Issue 14
DOI: 10.1103/PhysRevLett.117.141801

$CP$ Conservation in the Presence of Pseudoparticles
journal, June 1977

Peccei, R. D.; Quinn, Helen R.
Physical Review Letters, Vol. 38, Issue 25
DOI: 10.1103/PhysRevLett.38.1440

A New Light Boson?
journal, January 1978

Weinberg, Steven
Physical Review Letters, Vol. 40, Issue 4
DOI: 10.1103/PhysRevLett.40.223

Dimensionless constants, cosmology, and other dark matters
journal, January 2006

Tegmark, Max; Aguirre, Anthony; Rees, Martin J.
Physical Review D, Vol. 73, Issue 2
DOI: 10.1103/PhysRevD.73.023505

Can decaying particles raise the upperbound on the Peccei-Quinn scale?
journal, September 1996

Kawasaki, M.; Moroi, T.; Yanagida, T.
Physics Letters B, Vol. 383, Issue 3
DOI: 10.1016/0370-2693(96)00743-5

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

Choi, Kiwoon; Kim, Jihn E.
Nuclear Physics B, Vol. 490, Issue 1-2
DOI: 10.1016/S0550-3213(97)00066-7

Stochastic axion scenario
journal, August 2018

Graham, Peter W.; Scherlis, Adam
Physical Review D, Vol. 98, Issue 3
DOI: 10.1103/PhysRevD.98.035017

QCD axion window and low-scale inflation
journal, July 2018

Takahashi, Fuminobu; Yin, Wen; Guth, Alan H.
Physical Review D, Vol. 98, Issue 1
DOI: 10.1103/PhysRevD.98.015042

Strong QCD at high energies and a heavy axion
journal, May 1985

Holdom, Bob
Physics Letters B, Vol. 154, Issue 4
DOI: 10.1016/0370-2693(85)90371-5

Small instanton contribution to the axion potential in supersymmetric models
journal, March 1999

Choi, Kiwoon; Do Kim, Hyung
Physical Review D, Vol. 59, Issue 7
DOI: 10.1103/PhysRevD.59.072001

Minimal $S U (3) \times S U (3)$ symmetry breaking patterns
journal, March 2018

Bai, Yang; Dobrescu, Bogdan A.
Physical Review D, Vol. 97, Issue 5
DOI: 10.1103/PhysRevD.97.055024

Computation of the quantum effects due to a four-dimensional pseudoparticle
journal, December 1976

't Hooft, G.
Physical Review D, Vol. 14, Issue 12
DOI: 10.1103/PhysRevD.14.3432

Flavor-phenomenology of two-Higgs-doublet models with generic Yukawa structure
journal, May 2013

Crivellin, Andreas; Greub, Christoph; Kokulu, Ahmet
Physical Review D, Vol. 87, Issue 9
DOI: 10.1103/PhysRevD.87.094031

Model-independent constraints on Δ F = 2 operators and the scale of new physics
journal, March 2008

Bona, M.; Ciuchini, M.; Franco, E.
Journal of High Energy Physics, Vol. 2008, Issue 03
DOI: 10.1088/1126-6708/2008/03/049

Strong-weak CP hierarchy from nonrenormalization theorems
journal, May 2002

Hiller, Gudrun; Schmaltz, Martin
Physical Review D, Vol. 65, Issue 9
DOI: 10.1103/PhysRevD.65.096009

Axions, instantons, and the lattice
journal, November 2017

Dine, Michael; Draper, Patrick; Stephenson-Haskins, Laurel
Physical Review D, Vol. 96, Issue 9
DOI: 10.1103/PhysRevD.96.095001

New observables for direct detection of axion dark matter
journal, August 2013

Graham, Peter W.; Rajendran, Surjeet
Physical Review D, Vol. 88, Issue 3
DOI: 10.1103/PhysRevD.88.035023

Proposal for a Cosmic Axion Spin Precession Experiment (CASPEr)
journal, May 2014

Budker, Dmitry; Graham, Peter W.; Ledbetter, Micah
Physical Review X, Vol. 4, Issue 2
DOI: 10.1103/PhysRevX.4.021030

Flavor Cosmology: Dynamical Yukawas in the Froggatt-Nielsen Mechanism
text, January 2016

Baldes, Iason; Konstandin, Thomas; Servant, Géraldine
Deutsches Elektronen-Synchrotron, DESY, Hamburg
DOI: 10.3204/pubdb-2017-00589

Axion Cosmology
text, January 2018

Ringwald, Andreas
Deutsches Elektronen-Synchrotron, DESY, Hamburg
DOI: 10.3204/pubdb-2018-01986

Axion Cosmology
text, January 2015

Marsh, David J. E.
arXiv
DOI: 10.48550/arxiv.1510.07633

The ALP miracle: unified inflaton and dark matter
text, January 2017

Daido, Ryuji; Takahashi, Fuminobu; Yin, Wen
arXiv
DOI: 10.48550/arxiv.1702.03284

Cosmological abundance of the QCD axion coupled to hidden photons
text, January 2017

Kitajima, Naoya; Sekiguchi, Toyokazu; Takahashi, Fuminobu
arXiv
DOI: 10.48550/arxiv.1711.06590

Color Unifed Dynamical Axion
text, January 2018

Gaillard, M. K.; Gavela, M. B.; Houtz, R.
arXiv
DOI: 10.48550/arxiv.1805.06465

Axion Misalignment Driven to the Bottom
text, January 2018

Co, Raymond T.; Gonzalez, Eric; Harigaya, Keisuke
arXiv
DOI: 10.48550/arxiv.1812.11186

Hybrid Inflation
text, January 1993

Linde, Andrei
arXiv
DOI: 10.48550/arxiv.astro-ph/9307002

The Cosmology of String Theoretic Axions
text, January 1996

Banks, Tom; Dine, Michael
arXiv
DOI: 10.48550/arxiv.hep-th/9608197

Similar Records in DOE PAGES and OSTI.GOV collections:

Axion kinetic misalignment and parametric resonance from inflation

Journal Article Co, Raymond T. ; Hall, Lawrence J. ; Harigaya, Keisuke ; ... - Journal of Cosmology and Astroparticle Physics

Axion cold dark matter from standard misalignment typically requires a decay constantmore »« less
https://doi.org/10.1088/1475-7516/2020/08/036

Full Text Available
Axion misalignment driven to the bottom

Journal Article Co, Raymond T. ; Gonzalez, Eric ; Harigaya, Keisuke - Journal of High Energy Physics (Online)

Several theoretical motivations point to ultralight QCD axions with large decay constantsmore »« less
Cited by 11
https://doi.org/10.1007/JHEP05(2019)162

Full Text Available
Large-misalignment mechanism for the formation of compact axion structures: Signatures from the QCD axion to fuzzy dark matter

Journal Article Arvanitaki, Asimina ; Dimopoulos, Savas ; Galanis, Marios ; ... - Physical Review D

Axions are some of the best motivated particles beyond the Standard Model. We show how the attractive self-interactions of dark matter (DM) axions over a broad range of masses, from 10^–22 eV to 10⁷ GeV, can lead to nongravitational growth of density fluctuations and the formation of bound objects. This structure formation enhancement is driven by parametric resonance when the initial field misalignment is large, and it affects axion density perturbations on length scales of order the Hubble horizon when the axion field starts oscillating, deep inside the radiation-dominated era. This effect can turn an otherwise nearly scale-invariant spectrum ofmore »« less
Cited by 6
https://doi.org/10.1103/physrevd.101.083014

Full Text Available
Axion cosmology revisited

Journal Article Wantz, Olivier ; Shellard, E P. S. - Physical Review. D, Particles Fields

The misalignment mechanism for axion production depends on the temperature-dependent axion mass. The latter has recently been determined within the interacting instanton liquid model, and provides for the first time a well-motivated axion mass for all temperatures. We reexamine the constraints placed on the axion parameter space in the light of this new mass function. Taking this mass at face value, we find an accurate and updated constraint f{sub a{<=}}2.8({+-}2)x10{sup 11} GeV or m{sub a{>=}}21({+-}2) {mu}eV from the misalignment mechanism in the classic axion window (thermal scenario). However, this is superseded by axion string radiation which leads to f{sub a}more »« less
https://doi.org/10.1103/PHYSREVD.82.123508
Axion misalignment driven to the hilltop

Journal Article Co, Raymond T. ; Gonzalez, Eric ; Harigaya, Keisuke - Journal of High Energy Physics (Online)

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 constantmore »« less
Cited by 12
https://doi.org/10.1007/JHEP05(2019)163

Full Text Available

Similar Records

Title: Dynamical axion misalignment with small instantons

Abstract

Citation Formats

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

Hunting the flavon journal, September 2016

The not-so-harmless axion journal, January 1983

Axions in string theory journal, June 2006

Axion misalignment driven to the bottom journal, May 2019

Cosmology of the invisible axion journal, January 1983

The anatomy of neutral scalars with FCNCs in the flavour precision era journal, June 2013

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

The cosmology of string theoretic axions journal, November 1997

Cosmological abundance of the QCD axion coupled to hidden photons journal, June 2018

Mass Renormalization by Instantons and the Strong CP Problem journal, August 1988

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

A simple solution to the strong CP problem with a harmless axion journal, August 1981

Opening up the QCD axion window journal, March 2018

Raising the axion mass journal, December 1982

A computation of the small instanton contribution to the axion potential journal, January 1987

Factoring the strong CP problem journal, December 2018

Flavor cosmology: dynamical yukawas in the Froggatt-Nielsen mechanism journal, December 2016

Hybrid inflation journal, January 1994

A cosmological bound on the invisible axion journal, January 1983

Hierarchy of quark masses, cabibbo angles and CP violation journal, January 1979

Color unified dynamical axion journal, November 2018

The ALP miracle: unified inflaton and dark matter journal, May 2017

Chiral dynamics in the large N limit journal, January 1980

Axion cosmology journal, July 2016

String theory and the strong CP problem journal, August 1986

The quark electric dipole moment and the induced θ-term in the Kobayashi-Maskawa model journal, June 1986

The ALP miracle revisited journal, February 2018

Broadband and Resonant Approaches to Axion Dark Matter Detection journal, September 2016

CP Conservation in the Presence of Pseudoparticles journal, June 1977

A New Light Boson? journal, January 1978

Dimensionless constants, cosmology, and other dark matters journal, January 2006

Can decaying particles raise the upperbound on the Peccei-Quinn scale? journal, September 1996

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

Stochastic axion scenario journal, August 2018

QCD axion window and low-scale inflation journal, July 2018

Strong QCD at high energies and a heavy axion journal, May 1985

Small instanton contribution to the axion potential in supersymmetric models journal, March 1999

Minimal S U ( 3 ) × S U ( 3 ) symmetry breaking patterns journal, March 2018

Computation of the quantum effects due to a four-dimensional pseudoparticle journal, December 1976

Flavor-phenomenology of two-Higgs-doublet models with generic Yukawa structure journal, May 2013

Model-independent constraints on Δ F = 2 operators and the scale of new physics journal, March 2008

Strong-weak CP hierarchy from nonrenormalization theorems journal, May 2002

Axions, instantons, and the lattice journal, November 2017

New observables for direct detection of axion dark matter journal, August 2013

Proposal for a Cosmic Axion Spin Precession Experiment (CASPEr) journal, May 2014

Flavor Cosmology: Dynamical Yukawas in the Froggatt-Nielsen Mechanism text, January 2016

Axion Cosmology text, January 2018

Axion Cosmology text, January 2015

The ALP miracle: unified inflaton and dark matter text, January 2017

Cosmological abundance of the QCD axion coupled to hidden photons text, January 2017

Color Unifed Dynamical Axion text, January 2018

Axion Misalignment Driven to the Bottom text, January 2018

Hybrid Inflation text, January 1993

The Cosmology of String Theoretic Axions text, January 1996

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

Hunting the flavon
journal, September 2016

The not-so-harmless axion
journal, January 1983

Axions in string theory
journal, June 2006

Axion misalignment driven to the bottom
journal, May 2019

Cosmology of the invisible axion
journal, January 1983

The anatomy of neutral scalars with FCNCs in the flavour precision era
journal, June 2013

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

The cosmology of string theoretic axions
journal, November 1997

Cosmological abundance of the QCD axion coupled to hidden photons
journal, June 2018

Mass Renormalization by Instantons and the Strong $CP$ Problem
journal, August 1988

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

A simple solution to the strong CP problem with a harmless axion
journal, August 1981

Opening up the QCD axion window
journal, March 2018

Raising the axion mass
journal, December 1982

A computation of the small instanton contribution to the axion potential
journal, January 1987

Factoring the strong CP problem
journal, December 2018

Flavor cosmology: dynamical yukawas in the Froggatt-Nielsen mechanism
journal, December 2016

Hybrid inflation
journal, January 1994

A cosmological bound on the invisible axion
journal, January 1983

Hierarchy of quark masses, cabibbo angles and CP violation
journal, January 1979

Color unified dynamical axion
journal, November 2018

The ALP miracle: unified inflaton and dark matter
journal, May 2017

Chiral dynamics in the large N limit
journal, January 1980

Axion cosmology
journal, July 2016

String theory and the strong CP problem
journal, August 1986

The quark electric dipole moment and the induced θ-term in the Kobayashi-Maskawa model
journal, June 1986

The ALP miracle revisited
journal, February 2018

Broadband and Resonant Approaches to Axion Dark Matter Detection
journal, September 2016

$CP$ Conservation in the Presence of Pseudoparticles
journal, June 1977

A New Light Boson?
journal, January 1978

Dimensionless constants, cosmology, and other dark matters
journal, January 2006

Can decaying particles raise the upperbound on the Peccei-Quinn scale?
journal, September 1996

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

Stochastic axion scenario
journal, August 2018

QCD axion window and low-scale inflation
journal, July 2018

Strong QCD at high energies and a heavy axion
journal, May 1985

Small instanton contribution to the axion potential in supersymmetric models
journal, March 1999

Minimal $S U (3) \times S U (3)$ symmetry breaking patterns
journal, March 2018

Computation of the quantum effects due to a four-dimensional pseudoparticle
journal, December 1976

Flavor-phenomenology of two-Higgs-doublet models with generic Yukawa structure
journal, May 2013

Model-independent constraints on Δ F = 2 operators and the scale of new physics
journal, March 2008

Strong-weak CP hierarchy from nonrenormalization theorems
journal, May 2002

Axions, instantons, and the lattice
journal, November 2017

New observables for direct detection of axion dark matter
journal, August 2013

Proposal for a Cosmic Axion Spin Precession Experiment (CASPEr)
journal, May 2014

Flavor Cosmology: Dynamical Yukawas in the Froggatt-Nielsen Mechanism
text, January 2016

Axion Cosmology
text, January 2018

Axion Cosmology
text, January 2015

The ALP miracle: unified inflaton and dark matter
text, January 2017

Cosmological abundance of the QCD axion coupled to hidden photons
text, January 2017

Color Unifed Dynamical Axion
text, January 2018

Axion Misalignment Driven to the Bottom
text, January 2018

Hybrid Inflation
text, January 1993

The Cosmology of String Theoretic Axions
text, January 1996