Weak gravity conjecture as a razor criterium for exotic <i>D</i>-brane instantons

Addazi, Andrea

doi:10.1142/s0217732317500146

Cited by 2 publications

(2 citation statements)

References 59 publications

(63 reference statements)

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“…This possibility seems highly bounded by the weak gravity conjecture, pointed out recently in Ref. [13].…”

Section: Gravitational Wave Signal From Majoronsmentioning

confidence: 94%

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Limiting majoron self-interactions from gravitational wave experiments

Addazi

Marcianò

2018

Chinese Phys. C

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We show how Majoron models may be tested/limited in gravitational waves experiments. In particular, the Majoron self-interaction potential may induce a first order phase transition, producing gravitational waves from bubble collisions. We dubbed such a new scenario violent Majoron model, because it would be associated to a violent phase transition in the early Universe. Sphaleron constraints can be avoided if the global U (1)B−L is broken at scales lower than the electroweak scale, provided that the B-L spontaneously breaking scale is lower than 10 TeV in order to satisfy the cosmological mass density bound. The possibility of a sub-electroweak phase transition is practically unconstrained by cosmological bounds and it may be detected within the sensitivity of next generation of gravitational waves experiments: eLISA, DECIGO and BBO. We also comment on the possible detection in CEPC collider, where Majorons's production can be observed from Higgs' portals in missing transverse energy channels.

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“…This possibility seems highly bounded by the weak gravity conjecture, pointed out recently in Ref. [13].…”

Section: Gravitational Wave Signal From Majoronsmentioning

confidence: 94%

“…For instance a global U (1) L might be thought as a local U (1) L from flavor branes, since in string theory no exact global U (1) symmetry can arise. This possibility seems highly bounded by the weak gravity conjecture, pointed out recently in Ref [13]…”

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confidence: 97%

Limiting majoron self-interactions from gravitational wave experiments

Addazi

Marcianò

2018

Chinese Phys. C

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Super-light baryo-photons, weak gravity conjecture and exotic instantons in neutron-antineutron transitions

Addazi

2018

Chinese Phys. C

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Abstract:In companion papers (A. Addazi, Nuovo Cim. C, 38(1): 21 (2015); A. Addazi, Z. Berezhiani, and Y. Kamyshkov, arXiv:1607.00348), we have discussed current bounds on a new super-light baryo-photon, associated with a U (1)B−L gauge, from current neutron-antineutron data, which are competitive with Eötvös-type experiments. Here, we discuss the implications of possible baryo-photon detection in string theory and quantum gravity. The discovery of a very light gauge boson should imply violation of the weak gravity conjecture, carrying deep consequences for our understanding of holography, quantum gravity and black holes. We also show how the detection of a baryophoton would exclude the generation of all B−L violating operators from exotic stringy instantons. We will argue against the common statement in the literature that neutron-antineutron data may indirectly test at least the 300− 1000 TeV scale. Searches for baryo-photons can provide indirect information on the Planck (or string) scale (quantum black holes, holography and non-perturbative stringy effects). This strongly motivates new neutron-antineutron experiments with adjustable magnetic fields dedicated to the detection of super-light baryo-photons.

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Weak gravity conjecture as a razor criterium for exotic D-brane instantons

Cited by 2 publications

References 59 publications

Limiting majoron self-interactions from gravitational wave experiments

Limiting majoron self-interactions from gravitational wave experiments

Super-light baryo-photons, weak gravity conjecture and exotic instantons in neutron-antineutron transitions

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