CMBR anisotropy: Theoretical approaches
Abstract
A version of the cosmological perturbation theory based on exact resolution of the energy constraint is developed. In this version, the conformal time is invariant with respect to the diffeomorphisms of general relativity, and the scalar perturbations are the potential ones in accordance with the Dirac minimal surface constraint. The exact resolution gives one a possibility to fulfill the Hamiltonian reduction and to explain the 'CMBR primordial power spectrum' and other problems of modern cosmology by quantization of the energy constraint and cosmological creation of matter.
 Authors:
 Joint Institute for Nuclear Research, Bogolyubov Laboratory for Theoretical Physics (Russian Federation)
 Publication Date:
 OSTI Identifier:
 21075952
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physics of Atomic Nuclei; Journal Volume: 70; Journal Issue: 1; Other Information: DOI: 10.1134/S1063778807010243; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; BACKGROUND RADIATION; COSMIC RADIATION; COSMOLOGY; DISTURBANCES; GENERAL RELATIVITY THEORY; HAMILTONIANS; MICROWAVE RADIATION; PERTURBATION THEORY; QUANTIZATION; REDUCTION; RESOLUTION; SCALARS; SPECTRA; SURFACES
Citation Formats
Barbashov, B. M., Pervushin, V. N., Email: pervush@inbox.ru, Zakharov, A. F., and Zinchuk, V. A. CMBR anisotropy: Theoretical approaches. United States: N. p., 2007.
Web. doi:10.1134/S1063778807010243.
Barbashov, B. M., Pervushin, V. N., Email: pervush@inbox.ru, Zakharov, A. F., & Zinchuk, V. A. CMBR anisotropy: Theoretical approaches. United States. doi:10.1134/S1063778807010243.
Barbashov, B. M., Pervushin, V. N., Email: pervush@inbox.ru, Zakharov, A. F., and Zinchuk, V. A. Mon .
"CMBR anisotropy: Theoretical approaches". United States.
doi:10.1134/S1063778807010243.
@article{osti_21075952,
title = {CMBR anisotropy: Theoretical approaches},
author = {Barbashov, B. M. and Pervushin, V. N., Email: pervush@inbox.ru and Zakharov, A. F. and Zinchuk, V. A.},
abstractNote = {A version of the cosmological perturbation theory based on exact resolution of the energy constraint is developed. In this version, the conformal time is invariant with respect to the diffeomorphisms of general relativity, and the scalar perturbations are the potential ones in accordance with the Dirac minimal surface constraint. The exact resolution gives one a possibility to fulfill the Hamiltonian reduction and to explain the 'CMBR primordial power spectrum' and other problems of modern cosmology by quantization of the energy constraint and cosmological creation of matter.},
doi = {10.1134/S1063778807010243},
journal = {Physics of Atomic Nuclei},
number = 1,
volume = 70,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}
Other availability
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Tangled magnetic fields and CMBR signal from reionization epoch
We compute the secondary cosmic microwave background radiation (CMBR) anisotropy signal from the reionization of the Universe in the presence of tangled magnetic fields. We consider the tangledmagneticfieldinduced scalar, vector, and tensor modes for our analysis. The most interesting signal for l < or approx. 100 arises from tensor perturbations. In particular, we show that the enhancement observed by Wilkinson microwave anisotropy probe (WMAP) in the TE crosscorrelation signal for l < or approx. 10 could be explained by tensor TE cross correlation from tangled magnetic fields generated during the inflationary epoch for magnetic field strength B{sub 0}{approx_equal}4.5x10{sup 9} Gmore » 
Chain inflation and the imprint of fundamental physics in the CMBR
In this work we investigate characteristic modifications of the spectrum of cosmological perturbations and the spectral index due to chain inflation. We find two types of effects. First, modifications of the spectral index depending on interactions between radiation and the vacuum, and on features of the effective vacuum potential of the underlying fundamental theory. Second, a modulation of the spectrum signaling new physics due to bubble nucleation. This effect is similar to those of transplanckian physics. Measurements of such signatures could provide a wealth of information on the fundamental physics at the basis of inflation. 
CMBR weak lensing and HI 21cm crosscorrelation angular power spectrum
Weak gravitational lensing of the CMBR manifests as a secondary anisotropy in the temperature maps. The effect, quantified through the shear and convergence fields imprint the underlying large scale structure (LSS), geometry and evolution history of the Universe. It is hence perceived to be an important observational probe of cosmology. Delensing the CMBR temperature maps is also crucial for detecting the gravitational wave generated Bmodes. Future observations of redshifted 21cm radiation from the cosmological neutral hydrogen (HI) distribution hold the potential of probing the LSS over a large redshift range. We have investigated the correlation between postreionization HI signal andmore » 
The CMBR ISW and HI 21 cm crosscorrelation angular power spectrum
The latetime growth of large scale structures is imprinted in the CMBR anisotropy through the Integrated Sachs Wolfe (ISW) effect. This is perceived to be a very important observational probe of dark energy. Future observations of redshifted 21cm radiation from the cosmological neutral hydrogen (HI) distribution hold the potential of probing the large scale structure over a large redshift range. We have investigated the possibility of detecting the ISW through crosscorrelations between the CMBR anisotropies and redshifted 21cm observations. Assuming that the HI traces the dark matter, we find that the ISWHI crosscorrelation angular power spectrum at an angular multipolemore »