Elena V. Mikheeva

Generalized inflation with a gravitational wave background

We propose a Λ-inflation model that explains a significant part of the COBE signal by primordial cosmic gravitational waves. The primordial density perturbations fulfil both the constraints of large-scale microwave background and galaxy cluster normalization. The model is tested against the galaxy cluster power spectrum and the high-multipole angular cosmic microwave background anisotropy.

Black-and-white hole as a space-time with integrable singularity

We discuss the problem of singularities in general relativity and emphasize the distinction that should be made between what is understood to be mathematical and physical singularities. We revise examples of space-times that conventionally contain a singularity which, in a sense, does not manifest itself physically. A special attention is paid to the case of integrable singularities for which we propose a well-defined mathematical procedure used to extend the space-time beyond the singularity. We argue that this type of singularity may connect the interior of a black hole with a newly born universe (a space-time referred to as black-and-white hole) giving a resolution to the problem of initial high density and symmetry of the universe. We exemplify by presenting toy models of eternal and astrophysical black-and-white holes.

Observational constraints on Λ inflation

Observational data on the large-scale structure of the Universe and the anisotropy of the cosmic background radiation are used to derive constraints on the parameters of an inflationary model for the early Universe (Λ inflation).

The early universe and cosmogenesis

We extrapolate the Cosmological Standard Model to the past, determine initial geometrical conditions in the early universe, and consider a new cosmogenesis paradigm based on the concept of black-and-white holes with integrable singularities.

Current status of cosmological MDM models

An analysis of cosmological models in spatially flat Friedmann Universe with cosmic gravitational wave background and zero

Generation of cosmological flows in general relativity

\Lambda

Interstellar and intergalactic gas in the far IR and submillimeter spectral ranges

-term is presented. The number of free parameters is equal to 5, they are

Observational constraints on ? inflation

\sigma_8

Observational constraints on Lambda inflation

,

inflation and CMBR anisotropy

n