scholarly journals Gauge field production in axion inflation: Consequences for monodromy, non-Gaussianity in the CMB, and gravitational waves at interferometers

2012 ◽  
Vol 85 (2) ◽  
Author(s):  
Neil Barnaby ◽  
Enrico Pajer ◽  
Marco Peloso
Keyword(s):  
Gravitational Waves ◽  
Gauge Field ◽  
Field Production

scholarly journals Gravitational wave–gauge field dynamics

2017 ◽  
Vol 26 (12) ◽  
pp. 1742005 ◽  
Author(s):  
R. R. Caldwell ◽  
C. Devulder ◽  
N. A. Maksimova
Keyword(s):  
Quantum Gravity ◽  
Gravitational Wave ◽  
Gravitational Waves ◽  
Gauge Field ◽  
Linear Combination ◽  
Effective Mass ◽  
Normal Modes ◽  
New Approaches ◽  
Insight Into

The dynamics of a gravitational wave propagating through a cosmic gauge field are dramatically different than in vacuum. We show that a gravitational wave acquires an effective mass, is birefringent, and its normal modes are a linear combination of gravitational waves and gauge field excitations, leading to the phenomenon of gravitational wave–gauge field oscillations. These surprising results provide an insight into gravitational phenomena and may suggest new approaches to a theory of quantum gravity.

scholarly journals Constraints on gauge field production during inflation

2014 ◽  
Vol 2014 (07) ◽  
pp. 012-012 ◽  
Author(s):  
Sami Nurmi ◽  
Martin S. Sloth
Keyword(s):  
Gauge Field ◽  
Field Production

scholarly journals A General Free Plane Wave Ansatz to The Classcal SU(2) Yang-Mills Theory: with Application to Gravity

2019 ◽  
Vol 206 ◽  
pp. 09011
Author(s):  
W. Li ◽  
A. H. Chan ◽  
C. H. Oh
Keyword(s):  
Plane Wave ◽  
Gravitational Waves ◽  
Gauge Field ◽  
Nonlinear Interaction ◽  
The Other ◽  
Yang Mills ◽  
Energy And Momentum ◽  
Free Plane ◽  
Special Case ◽  
Exact Definition

In this project, the free plane wave conditions were imposed on the classical SU(2) gauge field to obtain a new general Ansatz. Although afterwards it was found that this Ansatz is similar to a special case of an existing Ansatz[1], there are important differences. The idea of this Ansatz was later applied to the other nonlinear interaction of nature, namely gravity. However, this effort encountered some complications, such as the lack of an exact definition or interpretation of energy and momentum of gravitational waves.

scholarly journals Gauge-field production during axion inflation in the gradient expansion formalism

2021 ◽  
Vol 104 (12) ◽  
Author(s):  
E. V. Gorbar ◽  
K. Schmitz ◽  
O. O. Sobol ◽  
S. I. Vilchinskii
Keyword(s):  
Gauge Field ◽  
Gradient Expansion ◽  
Field Production

Cosmic parity violation due to a flavor-space locked gauge field

2016 ◽  
Vol 25 (11) ◽  
pp. 1640011 ◽  
Author(s):  
Robert Caldwell
Keyword(s):  
Gravitational Waves ◽  
Gauge Field ◽  
Parity Violation ◽  
Wave Spectrum ◽  
Gauge Coupling ◽  
Line Of Sight ◽  
Microwave Background ◽  
Photon Polarization ◽  
Chiral Asymmetry ◽  
Cosmological Scenario

A flavor-space locked gauge field is shown to behave like a birefringent medium, imparting a preferred left- or right-circular polarization onto gravitational waves. In a cosmological scenario, such a gauge field can cause a primordial spectrum of gravitational waves to develop a net handedness. The degree of chiral asymmetry depends on the wavelength, the abundance of the gauge field, and the strength of the gauge coupling. An asymmetry in the gravitational wave spectrum would be imprinted on the photon polarization pattern of the cosmic microwave background at last scattering. In this scenario, cosmic parity violation is written on the sky, as we predict nonzero correlation of the curl polarization with the temperature, as well as curl with gradient polarization. We compare this phenomena with parity violation in models of chiral gravity, in which the chiral asymmetry is primordial, and with models of quintessence cosmic birefringence, in which parity-violating correlations are induced along the line of sight.

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