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Cited by 441

The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.

CMB anisotropies: Total angular momentum method

Open access
Hu, Wayne, White, Martin·1997·Physical Review D
DOI 10.1103/physrevd.56.596
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Abstract

A total angular momentum representation simplifies the radiation transport problem for temperature and polarization anisotropy in the cosmic microwave background (CMB). Scattering terms couple only the quadrupole moments of the distributions and each moment corresponds directly to the observable angular pattern on the sky. We develop and employ these techniques to study the general properties of anisotropy generation from scalar, vector, and tensor perturbations to the metric and the matter, both in the cosmological fluids and from any seed perturbations (e.g., defects) that may be present. The simpler, more transparent form and derivation of the Boltzmann equations brings out the geometric and model-independent aspects of temperature and polarization anisotropy formation. Large angle scalar polarization provides a robust means to distinguish between isocurvature and adiabatic models for structure formation in principle. Vector modes have the unique property that the CMB polarization is dominated by magnetic-type parity at small angles (a factor of $6$ in power compared with $0$ for the scalars and $8/13$ for the tensors) and hence potentially distinguishable independent of the model for the seed. The tensor modes produce a different sign from the scalars and vectors for the temperature-polarization correlations at large angles. We explore conditions under which one perturbation type may dominate over the others including a detailed treatment of the photon-baryon fluid before recombination.

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Metadata

Authors
Hu, W., & White, M.
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
1997-07-15
Volume
56
Issue
2
Pages
596-615
ISSN
  • 0556-2821 (ISSN-L)
  • 1089-4918
DOI
10.1103/physrevd.56.596
OpenAlex
W2130824226
Cited by
441
References
29
FWCI
11.19
Type
journal article
Language
en
Open access
green

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