摘要:

AbstractAfter outlining methods of analysing non‐linear dynamic systems are applied to simpler mathematical models of geophysical hydrodynamics. The dynamic stochastic approach is developed to the study of thermohydrodynamic fields of large scales, in which the stranger attractor of the real general atmospheric circulation is the mathematical image of stochasticit

ISSN:0015-8208    

DOI:10.1002/prop.2190410802

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractThe one‐parameter dependent family of the gauge invariant and gauge fixing independent effective actions is considered in one‐loop approximation. The one‐loop unique effective action (chosing as the representative of this family) ind= 4 Einstein quantum gravity with scalar field and Brans‐Dicke quantum theory in flat space, ind= 4 Einstein gravity on De Sitter background, in higher derivative gravity ond‐dimensional torus compactified background is calculated. The configuration‐space metric dependence of the unique effective action in these calculations is investigated. The appearing problems (the configuration‐space metric dependence of the physical quantities like induced gravitational constant)

ISSN:0015-8208    

DOI:10.1002/prop.2190410803

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractThe Lyra's geometry, which is a generalization of Weyl's geometry (removing the defect of non‐integrability of length transfer) and the gravitational theory and cosmology based on this geometry have been reviewed. Further, cosmological models with both constant and time dependent displacement field have been discussed. Some of these models solve the singularity, entropy and horizon problems. Finally some possibilities of further problems and their investigations have been pointed ou

ISSN:0015-8208    

DOI:10.1002/prop.2190410804

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0015-8208    

DOI:10.1002/prop.2190410801

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY