Thermolysereaktionen der donorfreien Silanimine tBu2Si=N-SiRtBu2 (R = tBu, Ph) / Thermolysis Reactions of Donor-free Silanimines tBu2Si=N-SiRtBu2 (R = tBu, Ph)

Lerner, Hans‐Wolfram; Sänger, Inge; Bolte, Michael

doi:10.1515/znb-2010-0112

Cited by 17 publications

(40 citation statements)

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“…Previous attempts to unitarize Higgs inflation have required the introduction of new degrees of freedom [15,16] or higher dimensional operators [17]. In the last part of this paper we note that if gravity were to exhibit asymptotic safety in the presence of the couplings which drive Higgs inflation then the models might not suffer from any unitarity issues.…”

Section: Introductionmentioning

confidence: 83%

Remarks on Higgs inflation

Atkins

Calmet

2011

Physics Letters B

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We discuss models where the Higgs boson of the electroweak standard model plays the role of the inflaton. We focus on the question of the violation of perturbative unitarity due to the coupling of the Higgs boson either to the Ricci scalar or to the Einstein tensor and discuss the background dependence of the unitarity bounds. Our conclusion is that the simplest model which restricts itself to the standard model Higgs boson without introducing further degrees of freedom has a serious problem. However, in the asymptotically safe gravity scenario, the Higgs boson of the standard model could be the inflaton and no physics beyond the standard model is required to explain both inflation and the spontaneous breaking of the electroweak symmetry of the standard model.

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Section: Introductionmentioning

confidence: 83%

Remarks on Higgs inflation

Atkins

Calmet

2011

Physics Letters B

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“…[11] (see also Ref. [12]). An interesting question is whether rendering the theory supersymmetric has any impact here; but we will not address this issue in this paper.…”

Section: Introductionmentioning

confidence: 96%

GUT scalar potentials for Higgs inflation

Einhorn

Jones

2012

J. Cosmol. Astropart. Phys.

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Abstract.Motivated by the idea that there is new physics beyond the Standard Model (SM), we have investigated a number of models for Grand Unified Theories (GUTS) in four dimensions for the possibility that their Higgs fields might be responsible for inflation in the early universe. In addition to models having an intrinsic Planck mass parameter, we have entertained classically scale invariant models in which the Planck scale itself as well as the GUT scale is induced by spontaneous breaking of the gauge symmetry. We found that in non-supersymmetric SU(5) with the usual Higgs in the adjoint representation but with large non-minimal coupling to the curvature, there appear to be several possible flat directions that might lead to inflation. Interestingly, the one of lowest energy is the breaking into SU(3)⊗SU(2)⊗U(1) that is suggested by gauge coupling unification. Further, we show that this flat direction is stable against small fluctuations in other directions.We attempted to extend this to similar supersymmetric GUTS, both global and supergravity, but did not succeed in finding a phenomenologically acceptable model of this type. As is often the case, such models suffered either from a negative vacuum energy or from tachyonic modes. We also considered a variant of an "inverted hierarchy" model in which the GUT scale is set by dimensional transmutation, but were unable to find a phenomenologically acceptable model.

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“…The correction for the Higgs direction, χ = h, in the SM+S model is given in Ref. 32 and it is unchanged for the case λ S < 0. On the other hand, in the S direction the one-loop potential does change, due to the following contribution…”

Section: Coleman-weinberg Potentialmentioning

confidence: 99%

“…One of the simplest extensions of the SM comprises the addition of a massive real scalar field, neutral under the SM gauge group and symmetric under Z 2 , to play the role of DM. [4][5][6] This scalar singlet S interacts with the SM only through the Higgs portal, S 2 |H| 2 , and has a variety of implications in different contexts, including thermal production and annihilation signals, [29][30][31] inflation, [32][33][34][35][36] baryogenesis [37][38][39] and direct detection through Higgs decay. [40][41][42][43][44] Constraints from several experiments and cosmological observations have been imposed on the scalar singlet DM model.…”

Section: Introductionmentioning

confidence: 99%

“…[72][73][74][75][76][77][78][79][80] The influence of an additional scalar singlet to the (meta)stability of the EW vacuum was analyzed in Refs. 14,32,44,[81][82][83][84][85][86][87][88][89] This paper is divided in two parts. First, we investigate the scalar singlet model with the addition of the potential presented in Ref., 65 in the light of the recent GAMBIT collaboration results.…”

Section: Introductionmentioning

confidence: 99%

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Dark energy, scalar singlet dark matter and the Higgs portal

Landim

2018

Mod. Phys. Lett. A

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One of the simplest extensions of the Standard Model (SM) comprises the inclusion of a massive real scalar field, neutral under the SM gauge groups, to be a dark matter candidate. The addition of a dimension-six term into the potential of the scalar dark matter enables the appearance of a false vacuum that describes the cosmic acceleration. We show that the running of the singlet self-interaction and the Higgs portal coupling differs from the standard scalar singlet dark matter model. If we maintain a positive quartic coupling, it is also possible to describe the accelerated expansion of the Universe through a false vacuum with the addition of a dimension-eight interaction term. In this case, where the potential remains bounded from below at low energies, the false vacuum decay is highly suppressed.

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Thermolysereaktionen der donorfreien Silanimine tBu₂Si=N-SiRtBu₂ (R = tBu, Ph) / Thermolysis Reactions of Donor-free Silanimines tBu₂Si=N-SiRtBu₂ (R = tBu, Ph)

Cited by 17 publications

References 0 publications

Remarks on Higgs inflation

Remarks on Higgs inflation

GUT scalar potentials for Higgs inflation

Dark energy, scalar singlet dark matter and the Higgs portal

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