On matched asymptotic expansions of backreacting metastable anti-branes

Nguyen, Nam; Niarchos, Vasilis

doi:10.1007/jhep06(2022)055

Cited by 7 publications

(1 citation statement)

References 43 publications

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“…Using Smarr relations and blackfold techniques, brane polarisation has been discussed beyond probe level in for instance [38][39][40][41][42]. The more pedestrian 4d GR-inspired method uses Israel junction conditions instead as in the original proposal of [5].…”

Section: Brane Polarisation Beyond Probe Level Using Junction Conditionsmentioning

confidence: 99%

Over-extremal brane shells from string theory?

Danielsson¹,

Hemelryck²,

Riet³

2022

Class. Quantum Grav.

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We demonstrate that, if the usual phenomenological compactifications of IIB string theory with warped throats and anti-branes make sense, there must exist spherical brane shells in 4d that are overcharged. They correspond to classical over-extremal objects but without the usual naked singularities. The objects are made from D3-particles that puff into spherical 5-branes that stabilise at finite radii in 4d and whose inside corresponds to the supersymmetric AdS vacuum. One can think of these shells as stabilised Brown-Teitelboim bubbles. We find that these objects can be significantly larger than the string scale depending on the details of the warped compactification.

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Section: Brane Polarisation Beyond Probe Level Using Junction Conditionsmentioning

confidence: 99%

Over-extremal brane shells from string theory?

Danielsson¹,

Hemelryck²,

Riet³

2022

Class. Quantum Grav.

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Moduli Stabilization in String Theory

McAllister,

Quevedo

2024

Handbook of Quantum Gravity

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Cosmological phase transitions and the swampland

Venken

2024

J. High Energ. Phys.

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I consider the Festina Lente Swampland bound and argue taking thermal effects, as for instance occur during reheating, into account significantly strengthens the implications of this bound. I argue that the confinement scale should be higher than a scale proportional to the vacuum energy, while Festina Lente without thermal effects only bounds the confinement scale to be above the Hubble scale. For Higgsing of nonabelian gauge fields, I find that the magnitude of the Higgs mass should be heavier than a bound proportional to the Electroweak scale (or generally the scale set by the Higgs VEV). The measured values of the Higgs in the SM satisfy the bound. A way to avoid the bound being violated during inflation is to have a large number of species becoming light. If one wants the inflationary scale to lie below the species scale in this case, this bounds the inflationary scale to be ≪ 105 GeV. These bounds have phenomenological implications for BSM physics such as GUTs, suggesting for example a weak or absent gravitational wave signature from the GUT Higgsing phase transition.

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On matched asymptotic expansions of backreacting metastable anti-branes

Cited by 7 publications

References 43 publications

Over-extremal brane shells from string theory?

Over-extremal brane shells from string theory?

Moduli Stabilization in String Theory

Cosmological phase transitions and the swampland

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