Gravity and the domain-wall problem

Rai, B.; Senjanović, Goran

doi:10.1103/physrevd.49.2729

Cited by 101 publications

(88 citation statements)

References 28 publications

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“…In this case, it can be shown that the vacuum degeneracy connecting the two sides of the CP domain wall is lifted, resulting in a wall annihilation driven by the decay of a false vacuum. More interestingly, assuming that gravity breaks global discrete symmetries explicitly, then there is probably no domain-wall problem at all (Dvali and Senjanovic, 1995;Rai and Senjanovic, 1994). These few examples show that although this problem arises whenever CP is spontaneously broken, it is possible to overcome it independently of the dynamics behind the symmetry breaking.…”

Section: F On the Origin Of Cp Violationmentioning

confidence: 99%

LeptonicCPviolation

Branco¹,

Felipe

Joaquim³

2012

Rev. Mod. Phys.

209

188

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Several topics on CP violation in the lepton sector are reviewed. A few theoretical aspects concerning neutrino masses, leptonic mixing, and CP violation will be covered, with special emphasis on seesaw models. A discussion is provided on observable effects which are manifest in the presence of CP violation, particularly, in neutrino oscillations and neutrinoless double beta decay processes, and their possible implications in collider experiments such as the LHC. The role that leptonic CP violation may have played in the generation of the baryon asymmetry of the Universe through the mechanism of leptogenesis is also discussed.

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Section: F On the Origin Of Cp Violationmentioning

confidence: 99%

LeptonicCPviolation

Branco¹,

Felipe

Joaquim³

2012

Rev. Mod. Phys.

209

188

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“…This cosmological catastrophe can of course be avoided by allowing explicit Z 3 breaking by terms suppressed by powers of the Planck mass which will ultimately dominate the wall evolution [851,852,853,854] without affecting the phenomenology of the model. One can also construct variations of the NMSSM which solve this domain wall problem.…”

Section: The Nmssmmentioning

confidence: 99%

The soft supersymmetry-breaking Lagrangian: theory and applications

Chung

Everett

Kane³

et al. 2005

Physics Reports

415

339

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After an introduction recalling the theoretical motivation for low energy (100 GeV to TeV scale) supersymmetry, this review describes the theory and experimental implications of the soft supersymmetry-breaking Lagrangian of the general minimal supersymmetric standard model (MSSM). Extensions to include neutrino masses and nonminimal theories are also discussed. Topics covered include models of supersymmetry breaking, phenomenological constraints from electroweak symmetry breaking, flavor/CP violation, collider searches, and cosmological constraints including dark matter and implications for baryogenesis and inflation.

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“…It has been observed in [58] that parity breaking effects suppressed by Planck scale are sufficient to remove the DW. Black Holes can carry only locally conserved charges, and therefore there would exist processes in Quantum Gravity which do not conserve global charges as well as violate discrete symmetry such as parity.…”

Section: Cosmology Of Breaking and Soft Termsmentioning

confidence: 99%

Gauge mediated supersymmetry breaking and the cosmology of the left-right symmetric model

2009

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Left-Right symmetry including supersymmetry presents an important class of gauge models which may possess natural solutions to many issues of phenomenology. Cosmology of such models indicates a phase transition accompanied by domain walls. Such walls must be unstable in order to not conflict with standard cosmology, and can further be shown to assist with open issues of cosmology such as dilution of unwanted relic densities and leptogenesis. In this paper we construct a model of gauge mediated supersymmetry breaking in which parity breaking is also signalled along with supersymmetry breaking and so as to be consistent with cosmological requirements.It is shown that addressing all the stated cosmological issues requires an extent of fine tuning, while in the absence of fine tuning, leptogenesis accompanying successful completion of the phase transition is still viable.

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Gravity and the domain-wall problem

Cited by 101 publications

References 28 publications

LeptonicCPviolation

LeptonicCPviolation

The soft supersymmetry-breaking Lagrangian: theory and applications

Gauge mediated supersymmetry breaking and the cosmology of the left-right symmetric model

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