Tunneling in axion monodromy

Brown, Jon; Cottrell, William; Shiu, Gary; Soler, Pablo

doi:10.1007/jhep10(2016)025

Cited by 29 publications

(59 citation statements)

References 37 publications

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“…This structre is also present in models of axion monodromy where it has been argued that tunneling between branches can compete with the perturbative evolution of the inflaton [40][41][42][43][44][45][46]. A rough estimate of the size of non-perturbative effects is given by the Coleman-De Luccia thin-wall approximation [47] of the tunneling rate:…”

Section: Jhep05(2018)075mentioning

confidence: 96%

Towards an explicit model of large field inflation

Dorronsoro¹,

Schillo²

2018

J. High Energ. Phys.

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Abstract:The unwinding inflation mechanism is studied in a type IIB flux compactification where all moduli are stabilized using flux, non-perturbative effects, and the leading α corrections of the large volume scenario. We consider the backreaction on the geometry due to the presence of anti-D3 branes as well as the backreaction of inflation on the Kähler moduli, and compute the resulting corrections to the slow-roll potential. By taking large flux numbers, we are able to find inflationary epochs where backreaction effects are under control, the inflaton traverses a super-Planckian field range, and the resulting amplitude of scalar perturbations is consistent with observation.

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Section: Jhep05(2018)075mentioning

confidence: 96%

Towards an explicit model of large field inflation

Dorronsoro¹,

Schillo²

2018

J. High Energ. Phys.

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“…So the viability of inflation requires that these membranes are not so light that their emission 'discharges' the initial field displacement too quickly, spoiling slow roll [4,5,51]. It appears reasonable to assume that the WGC places an upper bound on such charged membranes, though opinions differ as to how prohibitive this constraint is [54][55][56][57].…”

Section: The Weak Gravity Conjecture and Membranesmentioning

confidence: 99%

London equation for monodromy inflation

Kaloper

Lawrence

2017

Phys. Rev. D

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We focus on the massive gauge theory formulation of axion monodromy inflation. We argue that a gauge symmetry hidden in these models is the key mechanism protecting inflation from dangerous field theory and quantum gravity corrections. The effective theory of large field inflation is dual to a massive U(1) 4-form gauge theory, which is similar to a massive gauge theory description of superconductivity. The gauge theory explicitly realizes the old Julia-Toulouse proposal for a low energy description of a gauge theory in a defect condensate. While we work mostly with the example of quadratic axion potential induced by flux monodromy, we discuss how other types of potentials can arise from inclusion of gauge invariant corrections to the theory.

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“…Tunneling between the different branches is mediated by nucleating a membrane electrically charged under the 3-form field, but the tunneling rate is not fast enough to constrain large field inflation significantly [24][25][26]. Invariance under the gauge symmetry of the 3-form field also constrains the form of the higher dimensional corrections, which should appear as functions of the field strength F 4 or ρ(φ ) over the cut-off scale [7,8,27].…”

Section: Description In Terms Of Minkowski 4-formsmentioning

confidence: 99%

Backreaction in Axion Monodromy, 4-forms and the Swampland

Valenzuela¹

2017

Proceedings of Corfu Summer Institute 2016 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2016)

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Axion monodromy models can always be described in terms of an axion coupled to 3-form gauge fields with non-canonical kinetic terms. The presence of the saxions parametrising the kinetic metrics of the 3-form fields leads to backreaction effects in the inflationary dynamics. We review the case in which saxions backreact on the Kähler metric of the inflaton leading to a logarithmic scaling of the proper field distance at large field. This behaviour is universal in Type II string flux compactifications and consistent with a refinement of the Swampland Conjecture. The critical point at which this behaviour appears depends on the mass hierarchy between the inflaton and the saxions. However, in tractable compactifications, such a hierarchy cannot be realised without leaving the regime of validity of the effective theory, disfavouring transplanckian excursions in string theory.

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Tunneling in axion monodromy

Cited by 29 publications

References 37 publications

Towards an explicit model of large field inflation

Towards an explicit model of large field inflation

London equation for monodromy inflation

Backreaction in Axion Monodromy, 4-forms and the Swampland

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