Quick search Find article
Quick search
Find article

Neutrino number asymmetry and cosmological birefringence

C Q Geng1,2, S H Ho1,2 and J N Ng2

Show affiliations


We study effective interactions of a new type in terms of the CPT-even dimension-6 Chern–Simons-like term, which could originate from superstring theory, to generate the cosmological birefringence. We use the neutrino number asymmetry to induce a sizable rotation polarization angle in the data for the cosmic microwave background radiation polarization. The combined effect of the new term and the neutrino asymmetry provides an alternative way to understand the birefringence.


Keywords

CMBR polarization theory

cosmological neutrinos

baryon asymmetry

 

E-print Number: 0706.0080

Cited: by |

Refers: to

PACS

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

11.15.-q Gauge field theories

14.60.Lm Ordinary neutrinos (nue, numu, nutau)

11.25.-w Strings and branes

11.30.Er Charge conjugation, parity, time reversal, and other discrete symmetries

Subjects

Gravitation and cosmology

Particle physics and field theory

Astrophysics and astroparticles

Dates

Issue 09 (September 2007)

Received 13 July 2007, accepted for publication 20 August 2007

Published 11 September 2007



  1. Neutrino number asymmetry and cosmological birefringence

    C Q Geng et al JCAP09(2007)010

  2. Is it possible to tell the difference between fermionic and bosonic hot dark matter?

    Steen Hannestad et al JCAP09(2005)014

  3. Towards inflation in string theory

    Shamit Kachru et al JCAP10(2003)013

  4. Robustness of the photon–atom bound state in bandgap reservoirs

    D Mogilevtsev 2005 J. Opt. B: Quantum Semiclass. Opt. 7 274

  5. Brownian motion in a modulated optical trap

    Yi Deng et al 2007 J. Opt. A: Pure Appl. Opt. 9 S256

  6. Near-field photonics: tip-enhanced microscopy and spectroscopy on the nanoscale

    Neil Anderson et al 2006 J. Opt. A: Pure Appl. Opt. 8 S227

  7. The diffraction of light by narrow slits in plates of different materials

    Hugo F Schouten et al 2004 J. Opt. A: Pure Appl. Opt. 6 S277

  8. Superposed strokes analysis by conoscopic holography as an aid for a handwriting expert

    Giuseppe Schirripa Spagnolo et al 2004 J. Opt. A: Pure Appl. Opt. 6 869

  9. Generation of high-power femtosecond light pulses at 1 kHz in the mid-infrared spectral range between 3 and 12 µm by second-order nonlinear processes in optical crystals

    V Petrov et al 2001 J. Opt. A: Pure Appl. Opt. 3 R1

  10. 3D bit-oriented optical storage in photopolymers

    Susanna Orlic et al 2001 J. Opt. A: Pure Appl. Opt. 3 72

View by subject




Export








Please login to access our web services, or create an account if you don't yet have one.

You must have cookies enabled in your web browser to be able to login.

Username
Password

Forgotten your password? Get a new one here.