Electrodynamic effects of inflationary gravitons

Glavan, Dražen; Prokopec, Tomislav; Miao, S. P.; Woodard, R. P.

doi:10.1088/0264-9381/31/17/175002

Cited by 48 publications

(69 citation statements)

References 111 publications

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“…These include situations where other light fields are present during inflation, as electromagnetic spin one fields, or fermions. There has been some study of stochastic versions of scalar QED, see [119][120][121][122][123], Einstein-Maxwell systems [124,125] and the dynamics of minimally coupled fermions interacting with a scalar in de Sitter space [126][127][128][129] to which we hope our ability to systematize the stochastic framework can bring further insights, and against which predictions can be concretely tested.…”

Section: Jhep01(2016)153mentioning

confidence: 99%

Open EFTs, IR effects & late-time resummations: systematic corrections in stochastic inflation

Burgess¹,

Holman²,

Tasinato³

2016

J. High Energ. Phys.

118

122

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Though simple inflationary models describe the CMB well, their corrections are often plagued by infrared effects that obstruct a reliable calculation of late-time behaviour. We adapt to cosmology tools designed to address similar issues in other physical systems with the goal of making reliable late-time inflationary predictions. The main such tool is Open EFTs which reduce in the inflationary case to Stochastic Inflation plus calculable corrections. We apply this to a simple inflationary model that is complicated enough to have dangerous IR behaviour yet simple enough to allow the inference of late-time behaviour. We find corrections to standard Stochastic Inflationary predictions for the noise and drift, and we find these corrections ensure the IR finiteness of both these quantities. The latetime probability distribution, P(φ), for super-Hubble field fluctuations are obtained as functions of the noise and drift and so these too are IR finite. We compare our results to other methods (such as large-N models) and find they agree when these models are reliable. In all cases we can explore in detail we find IR secular effects describe the slow accumulation of small perturbations to give a big effect: a significant distortion of the late-time probability distribution for the field. But the energy density associated with this is only of order H 4 at late times and so does not generate a dramatic gravitational back-reaction.

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Section: Jhep01(2016)153mentioning

confidence: 99%

Open EFTs, IR effects & late-time resummations: systematic corrections in stochastic inflation

Burgess¹,

Holman²,

Tasinato³

2016

J. High Energ. Phys.

118

122

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“…We can also convert each of the three renormalization scales µ into 1 2 H plus arbitrary finite counterterms (denoted by the parameters α, β and γ) [48] F (x; …”

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confidence: 99%

Graviton corrections to vacuum polarization during inflation

Leonard¹,

Woodard²

2013

Class. Quantum Grav.

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108

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We use dimensional regularization to compute the one loop quantum gravitational contribution to the vacuum polarization on de Sitter background. Adding the appropriate BPHZ counterterms gives a fully renormalized result which can be used to quantum correct Maxwell's equations. We use the Hartree approximation to argue that the electric field strengths of photons experience a secular suppression during inflation.

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“…• For quantum gravity plus electrodynamics, inflationary gravitons induce secular effects on the dynamical photons and alter the electric field of a point charge and the magnetic field of a point magnetic dipole [24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

One loop corrected conformally coupled scalar mode equations during inflation

2017

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We employ a fully renormalized computation of the one loop contribution to the self-mass-squared of the conformally coupled (CC) scalar interacting with gravitons during inflation to study how inflationary produced gravitons affect the CC scalar evolution equation. The quantum corrected scalar mode functions turn out to get a secular growth effect, proportional to a logarithm of the scale factor at late times.

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Electrodynamic effects of inflationary gravitons

Cited by 48 publications

References 111 publications

Open EFTs, IR effects & late-time resummations: systematic corrections in stochastic inflation

Open EFTs, IR effects & late-time resummations: systematic corrections in stochastic inflation

Graviton corrections to vacuum polarization during inflation

One loop corrected conformally coupled scalar mode equations during inflation

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