Vacuum energy of M/sup 4/ x S/sup M/ x S/sup N/ in even dimensions

Gleiser, Marcelo; Jetzer, Philippe; Рубин,

doi:10.2172/6691250

Cited by 28 publications

(45 citation statements)

References 2 publications

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“…[70] in the case of spinors, namely~N~~M(-2) = 0 when N and M are both odd. It is possible that this result for spinors holds on other (even-dimensional) split-rank symmetric spaces as well, but this point will not be investigated further.…”

Section: Explicit Zero-temperature Calculationsmentioning

confidence: 99%

“…[70] for a two-parameter internal manifold, namely for V"' equal to a product of two spheres of different radii. A solution was found which, for a sufficiently large number (=~i0~) of matter fields, is consistent with the one-loop approximation, i.e., the size of the internal dimensions is larger than the Planck length.…”

Section: Self-consistent Einstein Field Equationsmentioning

confidence: 99%

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Harmonic analysis and propagators on homogeneous spaces

1990

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Section: Explicit Zero-temperature Calculationsmentioning

confidence: 99%

Section: Self-consistent Einstein Field Equationsmentioning

confidence: 99%

Harmonic analysis and propagators on homogeneous spaces

1990

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“…[31], we shall use the Keldysh formalism [43] for the computation of the CP- 1 An alternative dynamics for preserving the generated baryon asymmetry has been explored in Ref. [8]. 2 Although bottom and tau Yukawa couplings become large for large values of tan β, the bottom and tau superfield couplings to the Higgs boson combination which acquires vacuum expectation value, Φ = H 0 1 cos β + H 0 2 sin β, remains small, apart from an enhancement of the Φ-trilinear coupling to left and right sbottoms and staus, which increases the corresponding mixings, but does not lead to an enhancement of the phase transition strength.…”

Section: Introductionmentioning

confidence: 99%

Supersymmetric CP-violating currents and electroweak baryogenesis

et al. 2001

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In this work we compute the CP-violating currents of the right-handed stops and Higgsinos, induced by the presence of non-trivial vacuum expectation values of the Higgs fields within the context of the minimal supersymmetric extension of the Standard Model (MSSM) with explicit CP-violating phases. Using the Keldysh formalism, we perform the computation of the currents at finite temperature, in an expansion of derivatives of the Higgs fields. Contrary to previous works, we implement a resummation of the Higgs mass insertion effects to all orders in perturbation theory. While the components of the right-handed stop current j µ t R become proportional to the difference H 2 ∂ µ H 1 − H 1 ∂ µ H 2 (suppressed by ∆β), the Higgsino currents, j µ H i , present contributions proportional to both H 2 ∂ µ H 1 ± H 1 ∂ µ H 2 . For large values of the charged Higgs mass and moderate values of tan β the contribution to the source proportional to H 2 ∂ µ H 1 + H 1 ∂ µ H 2 in the diffusion equations become sizeable, although it is suppressed by the Higgsino number violating interaction rate Γ −1/2 µ . For small values of the wall velocity, 0.04 < ∼ v ω < ∼ 0.1, the total contribution leads to acceptable values of the baryon asymmetry for values of the CP-violating phases ϕ CP in the range 0.04 < ∼ | sin ϕ CP | < ∼ 1. Finally, we comment on the relevance of the latest results of Higgs searches at LEP2 for the mechanism of electroweak baryogenesis within the MSSM. † Present address:

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“…[The prefector A is important in demonstrating that thermal fluctuations are, in general, not likely to supplant bubble nucleation in first-order transitions [19] but we shall not pursue this here. ]…”

Section: Gaussian Fluctuationsmentioning

confidence: 99%