Topic
Scalar potential
About: Scalar potential is a research topic. Over the lifetime, 3642 publications have been published within this topic receiving 78868 citations. The topic is also known as: potential.
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TL;DR: Using the concept of complex non-PT symmetric potential, the authors in this article studied the creation of zero energy states in graphene by a scalar potential and the admissible range of the potential parameter values for which such states exist has been examined.
26 citations
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TL;DR: In this article, a viable dark energy scenario in the presence of cubic Horndeski interactions and a standard scalar-field kinetic term with two exponential potentials was proposed and the existence of new scaling solutions along which the cubic coupling provided an important contribution to the field density that scales in the same way as the background fluid density.
Abstract: We propose a viable dark energy scenario in the presence of cubic Horndeski interactions and a standard scalar-field kinetic term with two exponential potentials. We show the existence of new scaling solutions along which the cubic coupling $G_3$ provides an important contribution to the field density that scales in the same way as the background fluid density. The solutions finally exit to the epoch of cosmic acceleration driven by a scalar-field dominated fixed point arising from the second exponential potential. We clarify the viable parameter space in which all the theoretically consistent conditions including those for the absence of ghost and Laplacian instabilities are satisfied on scaling and scalar-field dominated critical points. In comparison to Quintessence with the same scalar potential, we find that the cubic coupling gives rise to some novel features: (i) the allowed model parameter space is wider in that a steeper potential can drive the cosmic acceleration; (ii) the dark energy equation of state $w_{\phi}$ today can be closer to $-1$ relative to Quintessence; (iii) even if the density associated with the cubic coupling dominates over the standard field density in the scaling era, the former contribution tends to be suppressed at low redshifts. We also compute quantities associated with the growth of matter perturbations and weak lensing potentials under the quasi-static approximation in the sub-horizon limit and show that the cubic coupling leads to the modified evolution of perturbations which can be distinguished from Quintessence.
26 citations
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TL;DR: In this paper, the concept of a generalized potential formulation is introduced and six methods that can be used for a wider range of magnetostatic problems are developed. But the other existing formulations and methods are special cases of the generalized potential.
Abstract: Scalar potential formulations as applied to the solution of magnetostatic problems are reviewed. The concept of a generalized potential formulation is introduced. Based on this concept, six methods that can be used for a wider range of problems are developed. It is shown that the other existing formulations and methods are special cases of the generalized potential. >
26 citations
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TL;DR: In this article, the magnetic field near the Earth was calculated by integrating over the entire tail current system assuming the magnetotail is a cylinder of constant radius and that the tail current decreases with distance into the tail as |x| −1 3.
26 citations
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TL;DR: In this paper, a general discussion of supersymmetric models with three families in the Higgs sector is conducted, and the scalar potential and minima conditions are investigated, deriving the mass matrices for scalar, pseudoscalar, and charged states.
Abstract: We conduct a general discussion of supersymmetric models with three families in the Higgs sector. We analyze the scalar potential and investigate the minima conditions, deriving the mass matrices for the scalar, pseudoscalar, and charged states. Depending on the Yukawa couplings and the Higgs spectrum, the model might allow the occurrence of potentially dangerous flavor-changing neutral currents at the tree level. We compute model-independent contributions for several observables, and as an example we apply this general analysis to a specific model of quark-Higgs interactions, discussing how compatibility with current experimental data constrains the Higgs sector.
26 citations