Initial conditions for supersymmetric inflation

Lazarides, George; Vlachos, N.D.

doi:10.1103/physrevd.56.4562

Cited by 45 publications

(61 citation statements)

References 8 publications

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“…A consistent supersymmetric picture leading 'naturally' to hybrid inflation and employing hierarchical neutrino masses has been presented in Ref. [10]. In the presence of a nonvanishing cosmological constant, cold dark matter must satisfy Ω CDM h 2 ≈ 0.125.…”

Section: Introductionmentioning

confidence: 99%

Supersymmetric cold dark matter with Yukawa unification

2000

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The cosmological relic density of the lightest supersymmetric particle of the minimal supersymmetric standard model is calculated under the assumption of gauge and Yukawa coupling unification. We employ radiative electroweak breaking with universal boundary conditions from gravitymediated supersymmetry breaking. Coannihilation of the lightest supersymmetric particle, which turns out to be an almost pure bino, with the next-to-lightest supersymmetric particle (the lightest stau) is crucial for reducing its relic density to an acceptable level. Agreement with the mixed or the pure cold (in the presence of a nonzero cosmological constant) dark matter scenarios for large scale structure formation in the universe requires that the lightest stau mass is about 2−8% larger than the bino mass, which can be as low as 222 GeV. The smallest allowed value of the lightest stau mass turns out to be about 232 GeV.

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Section: Introductionmentioning

confidence: 99%

Supersymmetric cold dark matter with Yukawa unification

2000

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“…the king) was the leader (hegemon), though he was not himself a part of it. This ambiguity has bedevilled writers from Arrian, who vainly tried to accommodate it in his speeches, 151 to E. N. Borza, who failed to recognize it. 152 E. Badian 153 rightly points out that nearly all references to antagonism or even diffference between Greeks and Macedonians are in speeches composed by Arrian himself.…”

Section: The Fifth Century Bcmentioning

confidence: 99%

“…There is a striking disequilibrium in this arrangement, for if the "Magians," the Persians' clergy, naturally offfĳiciated on behalf of the Persians and other Iranians, one may wonder why on the Macedonian side the religious specialists are described not as "Macedonian" but as "Greek." The reason is obviously not that mantic art was practiced exclusively south of Mt Olympus, but that in the fĳield of religion the distinction between "Macedonian" and "Greek" made no 151 Cf. Badian,"Greeks," p. 51,n.…”

Section: The Fifth Century Bcmentioning

confidence: 99%

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Brill's Companion to Ancient Macedon

Fox¹

2011

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“…How natural are the initial conditions that lead to the hybrid inflationary scenario [5]? We assume that the energy density ρ of the universe is dominated by V (ϕ, σ).…”

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confidence: 99%

Hybrid Inflation and Supergravity

Panagiotakopoulos

2001

Recent Developments in Particle Physics and Cosmology

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Abstract. Hybrid inflation is a natural scenario in the absence of supersymmetry. In the context of supergravity, however, it has to face the naturalness problems of the initial conditions and of the adequate suppression of the inflaton mass. Both can be successfully addressed in a class of models involving Kähler potentials associated with products of SU (1, 1)/U (1) Kähler manifolds and "decoupled" fields acquiring large vacuum expectation values through D-terms.Inflation offers an elegant solution to many cosmological problems [1]. However, "natural" realizations of the inflationary scenario are hard to find. "New" and "chaotic" inflation [1] invoke a very weakly coupled scalar field, the inflaton, in order to reproduce the observed temperature fluctuations ∆T T [2] in the cosmic background radiation (CBR). To overcome this naturalness problem Linde proposed the "hybrid" inflationary scenario [3,4] involving a coupled system of (two) scalar fields which manages to produce the temperature fluctuations in the CBR with natural values of the coupling constants. This is achieved by exploiting the smallness in Planck scale units (M P / √ 8π ≃ 2.435515 × 10 18 GeV = 1 which are adopted throughout our disscusion) of the false vacuum energy density associated with the phase transition leading to the spontaneous breaking of a symmetry in the post-Planck era. In the case that the broken symmetry is a gauge symmetry one of the (two) scalar fields involved is not a gauge singlet.Linde's potential is given by

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Initial conditions for supersymmetric inflation

Cited by 45 publications

References 8 publications

Supersymmetric cold dark matter with Yukawa unification

Supersymmetric cold dark matter with Yukawa unification

Brill's Companion to Ancient Macedon

Hybrid Inflation and Supergravity

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