Open string multi-branched and Kähler potentials

Carta, Federico; Marchesano, Fernando; Staessens, Wieland; Zoccarato, Gianluca

doi:10.1007/jhep09(2016)062

Cited by 79 publications

(159 citation statements)

References 118 publications

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“…To convince ourselves that this is not a mere coincidence, in the following section we will compute the on-shell values of (4.18) by solving the equations of motion of A A 3 andÃ 3A , which follow from the dual Lagrangian (4.14). As we will see, these on-shell values perfectly match those obtained by ten-to-four-dimensional reduction [25,44].…”

Section: Dualization To the Three-form Effective Theorysupporting

confidence: 78%

“…Note that the four-forms F A 4 andF 4 A have exactly the same structure as the four-forms obtained in [25,44] upon dimensional reduction of the type IIA RR field strengths, 11 which is quite encouraging. To convince ourselves that this is not a mere coincidence, in the following section we will compute the on-shell values of (4.18) by solving the equations of motion of A A 3 andÃ 3A , which follow from the dual Lagrangian (4.14).…”

Section: Dualization To the Three-form Effective Theorysupporting

confidence: 64%

“…These are exactly (modulo some conventions) the on-shell values of the four-forms obtained in [25,44] by dimensionally reducing the ten-dimensional Hodge duality relations between the type IIA RR field strengths. Substituting (4.25) back into the bosonic Lagrangian (4.23) and (4.24), one obtains the scalar potential of the original theory which coincides with the well-known form of the type IIA RR flux potential [50,57],…”

Section: Back To the Original Theorymentioning

confidence: 61%

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Three-forms in supergravity and flux compactifications

et al. 2017

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We present a duality procedure that relates conventional four-dimensional matter-coupled N = 1 supergravities to dual formulations in which auxiliary fields are replaced by field strengths of gauge three-forms. The duality promotes specific coupling constants appearing in the superpotential to vacuum expectation values of the field strengths. We then apply this general duality to type IIA string compactifications on Calabi-Yau orientifolds with RR fluxes. This gives a new supersymmetric formulation of the corresponding effective four-dimensional theories which includes gauge three-forms.

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Section: Dualization To the Three-form Effective Theorysupporting

confidence: 78%

Section: Dualization To the Three-form Effective Theorysupporting

confidence: 64%

Section: Back To the Original Theorymentioning

confidence: 61%

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Three-forms in supergravity and flux compactifications

et al. 2017

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“…Support for this conjecture can be found on the four-dimensional effective theories obtained upon dimensional reduction of Type IIA/B in a Calabi-Yau manifold. There, all 3-form fields appear either coupling an axion with a 4-form coupling or playing the role of G 0 in another 4-form coupling [95,96]. This extension of our conjecture may also have implications for the Bousso-Polchinski mechanism [97], which relies on the presence of (many) non-dynamical 3-forms to provide JHEP07(2017)123 a landscape finely scanning the cosmological constant value.…”

Section: Jhep07(2017)123supporting

confidence: 51%

A Chern-Simons pandemic

Uranga

Valenzuela

2017

J. High Energ. Phys.

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In this paper we study the consistency of generalized global symmetries in theories of quantum gravity, in particular string theory. Such global symmetries arise in theories with (p + 1)-form gauge fields, and for spacetime dimension d ≤ p + 3 there are obstructions to their breaking even by quantum effects of charged objects. In 4d theories with a 2-form gauge field (or with an axion scalar), these fields endow Schwarzschild black holes with quantum hair, a global charge leading to usual trouble with remnants. We describe precise mechanisms, and examples from string compactifications and holographic pairs, in which these problems are evaded by either gauging or breaking the global symmetry, via (suitable versions of) Stuckelberg or 4-form couplings. We argue that even in the absence of such couplings, the generic solution in string theory is the breaking of the global symmetries by cubic Chern-Simons terms involving different antisymmetric tensor fields. We conjecture that any theory with (standard or higher-degree antisymmetric tensor) gauge fields is in the Swampland unless its effective action includes such Chern-Simons terms. This conjecture implies that many familiar theories, like QED (even including the charged particles required by the Weak Gravity Conjecture) or N = 8 supergravity in four dimensions, are inconsistent in quantum gravity unless they are completed by these Chern-Simons terms.

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“…The explicit form of Z(s) and ρ(φ ) (which we display in section 4.1) was obtained by dimensionally reducing the 10d action and keeping track of all the 4-forms present in the compactification. A first analysis including open string fields has been performed in [31].…”

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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Open string multi-branched and Kähler potentials

Cited by 79 publications

References 118 publications

Three-forms in supergravity and flux compactifications

Three-forms in supergravity and flux compactifications

A Chern-Simons pandemic

Backreaction in Axion Monodromy, 4-forms and the Swampland

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