Built on

A. Kehagias and A. Riotto, “The Four-Point Correlator in Multifield Inflation, the Operator Product Expansion and the Symmetries of de Sitter,” Nucl. Phys
Original
1918
Earlier work this paper cites.
M. Fierz and W. Pauli, “On Relativistic Wave Equations for Particles of Arbitrary Spin in an Electromagnetic Field,” Proc. Roy. Soc. Lond
1939
Earlier work this paper cites.
L. Thomas, “On Unitary Representations of the Group of De Sitter Space,” Annals of Mathematics
1941
Earlier work this paper cites.
V. Bargmann and E. Wigner, “Group Theoretical Discussion of Relativistic Wave Equations,” Proc. Nat. Acad. Sci
1948
Earlier work this paper cites.
T. Newton, “A Note on the Representations of the De Sitter Group,” Annals of Mathematics
1950
Earlier work this paper cites.
S. Weinberg, “Photons and Gravitons in S S -Matrix Theory: Derivation of Charge Conservation and Equality of Gravitational and Inertial Mass,” Phys. Rev
1964
Earlier work this paper cites.
S. Coleman and J. Mandula, “All Possible Symmetries of the S S Matrix,” Phys. Rev
1967
Earlier work this paper cites.
S. Deser, “Self-Interaction and Gauge Invariance,” Gen. Rel. Grav
1970
Earlier work this paper cites.
D. Boulware and S. Deser, “Can Gravitation have a Finite Range?,” Phys. Rev
1972
Earlier work this paper cites.
C. Fronsdal, “Singletons and Massless, Integral Spin Fields on de Sitter Space,” Phys. Rev
1979
Earlier work this paper cites.
S. Weinberg and E. Witten, “Limits on Massless Particles,” Phys. Lett
1980
Earlier work this paper cites.
R. Wald, “Spin-2 Fields and General Covariance,” Phys. Rev
1986
Earlier work this paper cites.
A. Higuchi, “Forbidden Mass Range for Spin-2 Field Theory in de Sitter Spacetime,” Nucl. Phys
1987
Earlier work this paper cites.
E. Wigner, “On Unitary Representations of the Inhomogeneous Lorentz Group,” Annals Math
1989
Earlier work this paper cites.
M. Vasiliev, “Consistent Equation for Interacting Gauge Fields of all Spins in (3+1)-Dimensions,” Phys. Lett
1990
Earlier work this paper cites.
M. Vasiliev, “More on Equations of Motion for Interacting Massless Fields of All Spins in (3+1)-Dimensions,” Phys. Lett
1992
Earlier work this paper cites.
A. Riess et al
1998
Earlier work this paper cites.
S. Perlmutter et al
1999
Earlier work this paper cites.
S. Deser and A. Waldron, “Null Propagation of Partially Massless Higher Spins in (A)dS and Cosmological Constant Speculations,” Phys. Lett
2001
Earlier work this paper cites.
S. Deser and A. Waldron, “Gauge Invariances and Phases of Massive Higher Spins in (A)dS,” Phys. Rev. Lett
2001
Earlier work this paper cites.
S. Deser and A. Waldron, “Partial Masslessness of Higher Spins in (A)dS,” Nucl. Phys
2001
Earlier work this paper cites.
S. Deser and A. Waldron, “Arbitrary Spin Representations in de Sitter from dS/CFT with Applications to dS Supergravity,” Nucl. Phys
2003
Earlier work this paper cites.
J. Maldacena, “Non-Gaussian Features of Primordial Fluctuations in Single-Field Inflationary Models,” JHEP
2003
Earlier work this paper cites.
P. Creminelli and M. Zaldarriaga, “Single-Field Consistency Relation for the Three-Point Function,” JCAP
2004
Earlier work this paper cites.
R. Manvelyan and W. Ruhl, “Conformal Coupling of Higher Spin Gauge Fields to a Scalar Field in AdS(4) and Generalized Weyl Invariance,” Phys. Lett
2004
Earlier work this paper cites.
P. Creminelli, M. A. Luty, A. Nicolis, and L. Senatore, “Starting the Universe: Stable Violation of the Null Energy Condition and Non-Standard Cosmologies,” JHEP
2006
Earlier work this paper cites.
C. Cheung, P. Creminelli, A. L. Fitzpatrick, J. Kaplan, and L. Senatore, “The Effective Field Theory of Inflation,” JHEP
Original
2008
Earlier work this paper cites.
T. Suyama and M. Yamaguchi, “Non-Gaussianity in the Modulated Reheating Scenario,” Phys. Rev
Original
2008
Earlier work this paper cites.
A. Cooray, C. Li, and A. Melchiorri, “The Trispectrum of 21-cm Background Anisotropies as a Probe of Primordial Non-Gaussianity,” Phys. Rev
Original
2008
Earlier work this paper cites.
D. Seery, M. Sloth, and F. Vernizzi, “Inflationary Trispectrum from Graviton Exchange,” JCAP
Original
2009
Earlier work this paper cites.

Similar

X. Chen and Y. Wang, “Large Non-Gaussianities with Intermediate Shapes from Quasi-Single Field Inflation,” Phys. Rev
Original
2010
Cited alongside, same era.
X. Chen and Y. Wang, “Quasi-Single Field Inflation and Non-Gaussianities,” JCAP
Original
2010
Cited alongside, same era.
C. Byrnes and K.-Y. Choi, “Review of Local Non-Gaussianity from Multi-Field Inflation,” Adv. Astron
Original
2010
Cited alongside, same era.
R. Manvelyan and K. Mkrtchyan, “Conformal Invariant Interaction of a Scalar Field with the Higher Spin Field in AdS(D),” Mod. Phys. Lett
Original
2010
Cited alongside, same era.
X. Bekaert and E. Meunier, “Higher Spin Interactions with Scalar Matter on Constant Curvature Spacetimes: Conserved Current and Cubic Coupling Generating Functions,” JHEP

Then

G. L. Pimentel, “Inflationary Consistency Conditions from a Wavefunctional Perspective,” JHEP
Original
2014
Later among the works it cites.
E. Dimastrogiovanni, M. Fasiello, D. Jeong, and M. Kamionkowski, “Inflationary Tensor Fossils in Large-Scale Structure,” JCAP
Original
2014
Later among the works it cites.
A. Bzowski and K. Skenderis, “Comments on Scale and Conformal Invariance,” JHEP
Original
2014
Later among the works it cites.
A. Ghosh, N. Kundu, S. Raju, and S. Trivedi, “Conformal Invariance and the Four-Point Scalar Correlator in Slow-Roll Inflation,” JHEP
Original
2014
Later among the works it cites.
K. B. Alkalaev, M. Grigoriev, and E. D. Skvortsov, “Uniformizing Higher-Spin Equations,” J. Phys

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2017

Partially Massless Fields During Inflation

Baumann, Daniel, Goon, Garrett, Lee, Hayden et al.

Understand

The representation theory of de Sitter space allows for a category of partially massless particles which have no flat space analog, but could have existed during inflation.

We study the couplings of these exotic particles to inflationary perturbations and determine the resulting signatures in cosmological correlators.
When inflationary perturbations interact through the exchange of these fields, their correlation functions inherit scalings that cannot be mimicked by extra massive fields.
We discuss in detail the squeezed limit of the tensor-scalar-scalar bispectrum, and show that certain partially massless fields can violate the tensor consistency relation of single-field inflation.

Built on

A. Kehagias and A. Riotto, “The Four-Point Correlator in Multifield Inflation, the Operator Product Expansion and the Symmetries of de Sitter,” Nucl. Phys
Original
1918
Earlier work this paper cites.
M. Fierz and W. Pauli, “On Relativistic Wave Equations for Particles of Arbitrary Spin in an Electromagnetic Field,” Proc. Roy. Soc. Lond
1939
Earlier work this paper cites.
L. Thomas, “On Unitary Representations of the Group of De Sitter Space,” Annals of Mathematics
1941
Earlier work this paper cites.
V. Bargmann and E. Wigner, “Group Theoretical Discussion of Relativistic Wave Equations,” Proc. Nat. Acad. Sci
1948
Earlier work this paper cites.
T. Newton, “A Note on the Representations of the De Sitter Group,” Annals of Mathematics
1950
Earlier work this paper cites.
S. Weinberg, “Photons and Gravitons in S S -Matrix Theory: Derivation of Charge Conservation and Equality of Gravitational and Inertial Mass,” Phys. Rev
1964
Earlier work this paper cites.
S. Coleman and J. Mandula, “All Possible Symmetries of the S S Matrix,” Phys. Rev
1967
Earlier work this paper cites.
S. Deser, “Self-Interaction and Gauge Invariance,” Gen. Rel. Grav
1970
Earlier work this paper cites.
D. Boulware and S. Deser, “Can Gravitation have a Finite Range?,” Phys. Rev
1972
Earlier work this paper cites.
C. Fronsdal, “Singletons and Massless, Integral Spin Fields on de Sitter Space,” Phys. Rev
1979
Earlier work this paper cites.
S. Weinberg and E. Witten, “Limits on Massless Particles,” Phys. Lett
1980
Earlier work this paper cites.
R. Wald, “Spin-2 Fields and General Covariance,” Phys. Rev
1986
Earlier work this paper cites.
A. Higuchi, “Forbidden Mass Range for Spin-2 Field Theory in de Sitter Spacetime,” Nucl. Phys
1987
Earlier work this paper cites.
E. Wigner, “On Unitary Representations of the Inhomogeneous Lorentz Group,” Annals Math
1989
Earlier work this paper cites.
M. Vasiliev, “Consistent Equation for Interacting Gauge Fields of all Spins in (3+1)-Dimensions,” Phys. Lett
1990
Earlier work this paper cites.
M. Vasiliev, “More on Equations of Motion for Interacting Massless Fields of All Spins in (3+1)-Dimensions,” Phys. Lett
1992
Earlier work this paper cites.
A. Riess et al
1998
Earlier work this paper cites.
S. Perlmutter et al
1999
Earlier work this paper cites.
S. Deser and A. Waldron, “Null Propagation of Partially Massless Higher Spins in (A)dS and Cosmological Constant Speculations,” Phys. Lett
2001
Earlier work this paper cites.
S. Deser and A. Waldron, “Gauge Invariances and Phases of Massive Higher Spins in (A)dS,” Phys. Rev. Lett
2001
Earlier work this paper cites.
S. Deser and A. Waldron, “Partial Masslessness of Higher Spins in (A)dS,” Nucl. Phys
2001
Earlier work this paper cites.
S. Deser and A. Waldron, “Arbitrary Spin Representations in de Sitter from dS/CFT with Applications to dS Supergravity,” Nucl. Phys
2003
Earlier work this paper cites.
J. Maldacena, “Non-Gaussian Features of Primordial Fluctuations in Single-Field Inflationary Models,” JHEP
2003
Earlier work this paper cites.
P. Creminelli and M. Zaldarriaga, “Single-Field Consistency Relation for the Three-Point Function,” JCAP
2004
Earlier work this paper cites.
R. Manvelyan and W. Ruhl, “Conformal Coupling of Higher Spin Gauge Fields to a Scalar Field in AdS(4) and Generalized Weyl Invariance,” Phys. Lett
2004
Earlier work this paper cites.
P. Creminelli, M. A. Luty, A. Nicolis, and L. Senatore, “Starting the Universe: Stable Violation of the Null Energy Condition and Non-Standard Cosmologies,” JHEP
2006
Earlier work this paper cites.
C. Cheung, P. Creminelli, A. L. Fitzpatrick, J. Kaplan, and L. Senatore, “The Effective Field Theory of Inflation,” JHEP
Original
2008
Earlier work this paper cites.
T. Suyama and M. Yamaguchi, “Non-Gaussianity in the Modulated Reheating Scenario,” Phys. Rev
Original
2008
Earlier work this paper cites.
A. Cooray, C. Li, and A. Melchiorri, “The Trispectrum of 21-cm Background Anisotropies as a Probe of Primordial Non-Gaussianity,” Phys. Rev
Original
2008
Earlier work this paper cites.
D. Seery, M. Sloth, and F. Vernizzi, “Inflationary Trispectrum from Graviton Exchange,” JCAP
Original
2009
Earlier work this paper cites.