1,003 research outputs found

    Ghost-Free Higher Derivative Quantum Gravity, the Hierarchy and the Cosmological Constant Problems

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    Proposing new solution problems of the hierarchy and smallness of the cosmological constant using the Tev scale of the Standard Model in new framework of the higher-order gravity.Comment: 5 pages referances added, published versio

    Supersymmetric FRW model and the ground state of supergravity

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    In this work we construct the vacuum configuration of supergravity interacting with homogeneous complex scalar matter fields. The corresponding configuration is of the FRW model invariant under the n=2n=2 local conformal time supersymmetry, which is a subgroup of the four dimensional space-time supersymmetry. We show, that the potential of the scalar matter fields is a function of the K\"ahler potential and of the arbitrary parameter α\alpha. This parameter enumerates the vacuum states. The scalar matter potential induces the spontaneous breaking of supersymmetry in supergravity. On the quantum level our model is a specific supersymmetric quantum mechanics, which admits quantum states in supergravity, and the states with zero energy are described by the wave function of the FRW universe.Comment: 18 pages, Revtex, submitted to PR

    Informative economy for viable development: modern tendencies

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    In the second half of XX of lawsuit information technologies (IТ) were absorbed in itself by the avalanche-type achievements of electronics, and also mathematics, philosophy, psychology and economy. An appearing as a result viable hybrid marked a revolutionary jump in history of information technologies, that counts hundreds of thousands of years. Modern society is gap-filling and pierced by the streams of information, that need treatment. Therefore without IТ, equal as without power, transport and chemical technologies, it it is normal to function does not can. Socio-economic planning and management, production and transport, jars and exchanges, mass and publishing house medias, defensive systems, social and lawenforcement databases, service and health protection, educational processes, offices for processing of scientific and business information, finally, Internet - everywhere IТ

    Reparametrization Invariance and the Schr\"odinger Equation

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    In the present work we consider a time-dependent Schr\"odinger equation for systems invariant under the reparametrization of time. We develop the two-stage procedure of construction such systems from a given initial ones, which is not invariant under the time reparametrization. One of the first-class constraints of the systems in such description becomes the time-dependent Schr\"odinger equation. The procedure is applicable in the supersymmetric theories as well. The n=2n=2 supersymmetric quantum mechanics is coupled to world-line supergravity, and the local supersymmetric action is constructed leading to the square root representation of the time-dependent Schr\"odinger equation.Comment: RevTeX,25 page

    Non-perturbation theory of electronic dynamic conductivity for two-barrier resonance tunnel nano-structure

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    The non-perturbation theory of electronic dynamic conductivity for open two-barrier resonance tunnel structure is established for the first time within the model of rectangular potentials and different effective masses of electrons in the elements of nano-structure and the wave function linear over the intensity of electromagnetic field. It is proven that the results of the theory of dynamic conductivity, developed earlier in weak signal approximation within the perturbation method, qualitatively and quantitatively correlate with the obtained results. The advantage of non-perturbation theory is that it can be extended to the case of electronic currents interacting with strong electromagnetic fields in open multi-shell resonance tunnel nano-structures, as active elements of quantum cascade lasers and detectors.Comment: 10 pages, 2 figure
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