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Macroscopic Effect of Quantum Gravity: Graviton, Ghost and Instanton Condensation on Horizon Scale of Universe

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Journal of Modern Physics 2013年第8期4卷 48-101页

作者： Leonid Marochnik Daniel Usikov grigory vereshkov 1Research Institute of Physics Southern Federal University Rostov-on-Don Russia 2Institute for Nuclear Research of the Russian Academy of Sciences Moscow Russia Physics Department University of Maryland College Park USA

We discuss a special class of quantum gravity phenomena that occur on the scale of the Universe as a whole at any stage of its evolution, including the contemporary Universe. These phenomena are a direct consequence of the zero rest mass of gravitons, conformal non-invariance of the graviton field, and one-loop finiteness of quantum gravity, i.e. it is a direct consequence of first principles only. The effects are due to graviton-ghost condensates arising from the interfereence of quantum coherent states. Each of coherent states is a state of gravitons and ghosts of a wavelength of the order of the horizon scale and of different occupation numbers. The state vector of the Universe is a coherent superposition of vectors of different occupation numbers. One-loop approximation of quantum gravity is believed to be applicable to the contemporary Universe because of its remoteness from the Planck epoch. To substantiate the reliability of macroscopic quantum effects, the formalism of one-loop quantum gravity is discussed in detail. The theory is constructed as follows: Faddeev-Popov path integral in Hamilton gauge → factorization of classical and quantum variables, allowing the existence of a self-consistent system of equations for gravitons, ghosts and macroscopic geometry → transition to the one-loop approximation, taking into account that contributions of ghost fields to observables cannot be eliminated in any way. The ghost sector corresponding to the Hamilton gauge automatically ensures of one-loop finiteness of the theory off the mass shell. The Bogolyubov-Born-Green-Kirckwood-Yvon (BBGKY) chain for the spectral function of gravitons renormalized by ghosts is used to build a self-consistent theory of gravitons in the isotropic Universe. It is the first use of this technique in quantum gravity calculations. We found three exact solutions of the equations, consisting of BBGKY chain and macroscopic Einstein’s equations. It was found that these solutions describe virtual

关键词： Quantum Gravity

Conformal Evolution of Waves in the Yang-Mills Condensate: The Quasi-Classical Approach

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Journal of Modern Physics 2014年第5期5卷 209-229页

作者： Roman Pasechnik George Prokhorov grigory vereshkov 1Research Institute of Physics Southern Federal University Rostov-on-Don Russia 2Institute for Nuclear Research of Russian Academy of Sciences Moscow Russia Research Institute of Physics Southern Federal University Rostov-on-Don Russia Theoretical High Energy Physics Department of Astronomy and Theoretical Physics Lund University Lund Sweden

We have constructed a consistent system of equations for the Yang-Mills quantum-wave fluctuations in the classical Yang-Mills condensate based on canonical quantization in the Heisenberg representation. Such a quasi-classical system has been thoroughly analyzed in the conformal limit in the linear and quasi-linear approximations, both analytically and numerically. We have found that interaction between waves and condensate triggers a significant transfer or swap of energy from the condensate to the wave modes in the SU(2) gauge theory. Remarkably, a similar energy swap effect has been found in the maximally-supersymmetric N=4 Yang-Mills theory, as well as in the two-condensate SU(4) gauge theory. Such a generic feature of Yang-Mills dynamics opens up vast phenomenological implications in ultra-relativistic Yang-Mills plasma physics.

关键词： Gauge Theories Canonical Quantization Relativistic Yang-Mills Plasma Quantum-Wave Fluctuations Classical Yang-Mills Condensate

Providing the Quality of Pipes Supplied for the Construction of Oil Pipelines in Arctic Conditions

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China Oil & Gas 2024年第4期31卷 57-64页

作者： Tkachuk Maxim Alexandrovich Nesterov grigory Valerievich Yushin Alexey Alexandrovich Limited Liability Company《Sinarastroykomplekt》 LLC《Sinarastroykomplekt》 Zhejiang Jinggong Integration Technology Co.Ltd.

This article discusses the design features of pipes in thermal insulation used in the construction of main and field pipelines in Arctic *** defects that occur during the production,transportation and storage of pipes are *** for repair or prevention of defects are *** information may be useful to Chinese manufacturers and transport companies in order to ensure the possibility of supplying pipes to construction sites in Arctic conditions.

关键词： companies Arctic pipes

Advances in technology for the laboratory diagnosis of individuals with HIV/AIDS coinfected with Mycobacterium tuberculosis

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Biosafety and Health 2024年第3期6卷 133-142页

作者： Jin Sun Xiaoxu Han Hongxia Yan Xin Zhang Taiyi Jiang Tong Zhang Hao Wu grigory Kaminskiy Yingmin Ma Eduard Karamov Bin Su Beijing Key Laboratory for HIV/AIDS Research Clinical and Research Center for Infectious DiseasesBeijing Youan HospitalCapital Medical UniversityBeijing 100069China State Health Organization Tula Regional Center for Control and Prevention of AIDS and Infectious Diseases Tula 300002Russia Department of Respiratory and Critical Care Medicine Beijing Youan HospitalCapital Medical UniversityBeijing 100069China Gamaleya National Research Centre for Epidemiology and Microbiology of the Ministry of Health of the Russian Federation Moscow 123098Russia

The high morbidity and mortality rate of individuals with human immunodeficiency virus(HIV)/acquired immunodeficiency syndrome(AIDS)coinfected with Mycobacterium tuberculosis(MTB)is a tough challenge for current global tuberculosis prevention and control ***/MTB coinfection is more complex than a single infection,and the interaction between the two diseases aggravates the deterioration caused by the disease,resulting in increased hospitalizations and *** screening and early diagnosis facilitate the timely initiation of anti-tuberculosis treatment in HIV/MTB coinfected individuals,thereby reducing transmission and the incidence of adverse *** date,pathogenic detection has remained the gold standard for diagnosing tuberculosis,but its sensitivity and specificity are greatly affected by the body's immune status,which limits its application in the diagnosis of HIV/MTB ***,immunology and molecular detection technology has developed *** detection technologies,such as interferon-γ release assays,interferon-gamma inducible protein 10,and GeneXpert MTB/RIF assay have overcome the limitations of traditional detection methods,significantly improved the sensitivity and specificity of tuberculosis diagnosis,and brought new hope to the detection of HIV/MTB *** this article,the principle,scope of application,and latest research progress of relevant detection methods are reviewed to provide a reference for the early diagnosis of HIV/MTB coinfection.

关键词： Human immunodeficiency virus(HIV) Mycobacterium tuberculosis(MTB)coinfection Mycobacterium tuberculosis(MTB) Early diagnosis

Analysis of the Caratheodory's Theorem on Dynamical System Trajectories Under Numerical Uncertainty

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IEEE/CAA Journal of Automatica Sinica 2018年第4期5卷 787-793页

作者： Pavel Osinenko grigory Devadze Stefan Streif Automatic Control and System Dynamics Laboratory Technische Universitat Chemnitz09107 ChemnitzGermany IEEE

The current work proposes a new and constructive proof for the Caratheodory's theorem on existence and uniqueness of trajectories of dynamical systems. The key concern is the numerical uncertainty, i.e., the discrepancy between mathematical proofs, algorithms, and their implementations, which may affect the correct functioning of a control system. Due to growing demands on security and compliance with specifications,correctness of the control system functioning is becoming ever more important. Since in both dynamical systems and many control design approaches, one of the central notions is the system trajectory, it is important to address existence and uniqueness of system trajectories in a way which incorporates numerical uncertainty. Constructive analysis is a particular approach to formalizing numerical uncertainty and is used as the basis of the current work. The major difficulties of guaranteeing existence and uniqueness of system trajectories arise in the case of systems and controllers which possess discontinuities in time,since classical solutions to initial value problems do not *** issue is addressed in Caratheodory's theorem. A particular constructive variant of the theorem is proven which covers a large class of problems found in practice.

关键词： Constructive analysis Caratheodory’s theorem dynamical systems

CI-Property for Decomposable Schur Rings over an Abelian Group

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Algebra Colloquium 2019年第1期26卷 147-160页

作者： Istvan Kovacs grigory Ryabov UP IAM University of Primorska Muzejski trg 2 6000 Koper Slovenia UP FAMNIT University of Primorska Glagoljaska 8 6000 Koper Slovenia Sobolev Institute of Mathematics Novosibirsk Russia Novosibirsk State University Novosibirsk Russia

A Schur ring over a finite group is said to be decomposable if it is the generalized wreath product of Schur rings over smaller groups. In this paper we establish a sufficient condition for a decomposable Schur ring over the direct product of elementary abelian groups to be a Ci-Schur ring. By using this condition we offer short proofs for some known results on the CI-property for decomposable Schur rings over an elementary abelian group of rank at most 5.

关键词： isomorphism CI-group Schur ring

Peliosis hepatis complicated by portal hypertension following renal transplantation

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World Journal of Gastroenterology 2020年第34期26卷 5220-5222页

作者： grigory Demyashkin Margarita Zatsepina Department of Pathology Sechenov UniversityMoscow 119146Russia

Peliosis hepatis is a rare benign disease,but in last years the number of identified cases has *** disease is known to be sometimes accompanied by hepatocellular *** the recent article,Yu et al describe a case of liver peliosis,characterized by an increased proliferative ***,additional diagnosis of patients should include analyzing other tumor markers expression in order to assess the risk of malignant cell transformation in peliosis hepatis.

关键词： Peliosis hepatis Hepatocellular carcinoma Survivin Epithelial-mesenchymal transition

Pendulum-type laser strainmeter

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Earthquake Science 2015年第4期28卷 311-317页

作者： grigory Ivanovich Dolgikh V.I.Il'ichev Pacific Oceanological Institute of the Far Eastern Branch Russian Academy of Sciences

Constructive disposition principles of the basic optical units of Michelson interferometers are used in making one-coordinate laser strainmeters of unequal-arm type. The fundamental advantages of pendulurn-type laser ... 详细信息

关键词： Amplitude-frequency characteristic Classical-type laser strainmeter Elastic wave Infrasound Pendulum-type laser strainmeter

A Finite Difference Scheme on a Priori Adapted Meshes for a Singularly Perturbed Parabolic Convection-Diffusion Equation

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Numerical Mathematics(Theory,Methods and Applications) 2008年第2期1卷 214-234页

作者： grigory I.Shishkin Institute of Mathematics and Mechanics Ural Branch of Russian Academy of Sciences

A boundary value problem is considered for a singularly perturbed parabolic convection-diffusion equation; we construct a finite difference scheme on α priori （sequentially） adapted meshes and study its convergence. The scheme on α priori adapted meshes is constructed using a majorant function for the singular component of the discrete solution, which allows us to find α priori a subdomain where the computed solution requires a further improvement. This subdomain is defined by the perturbation parameter ε, the step-size of a uniform mesh in χ, and also by the required accuracy of the discrete solution and the prescribed number of refinement iterations K for improving the solution. To solve the discrete problems aimed at the improvement of the solution, we use uniform meshes on the subdomains. The error of the numerical solution depends weakly on the parameter ε. The scheme converges almost ε-uniformly, precisely, under the condition N^-1 = o （ε^v）, where N denotes the number of nodes in the spatial mesh, and the value v = v（K） can be chosen arbitrarily small for suitable K.

关键词： Singular perturbations convection-diffusion problem piecewise-uniform mesh α priori adapted mesh almost ε-uniform convergence