C Q Geng et al JCAP09(2007)010 doi:10.1088/1475-7516/2007/09/010
C Q Geng1,2, S H Ho1,2 and J N Ng2
Show affiliationsWe 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.
E-print Number: 0706.0080
Cited: by |
Refers: to
14.60.Lm Ordinary neutrinos (nue, numu, nutau)
11.30.Er Charge conjugation, parity, time reversal, and other discrete symmetries
Issue 09 (September 2007)
Received 13 July 2007, accepted for publication 20 August 2007
Published 11 September 2007
C Q Geng et al JCAP09(2007)010
E G Adelberger 2001 Class. Quantum Grav. 18 2397
W. C. Jones et al. 2006 ApJ 647 823
T. E. Montroy et al. 2006 ApJ 647 813
F. Piacentini et al. 2006 ApJ 647 833
Nimesh A. Patel et al. 2009 ApJ 692 1205
Y Arntz et al 2003 Nanotechnology 14 86
Kook-Nyung Lee et al 2003 J. Micromech. Microeng. 13 18
R F Sabirianov et al 2007 J. Phys.: Condens. Matter 19 082201
Ramin M Abolfath et al 2007 New J. Phys. 9 353