Cosmological neutrino bounds for non-cosmologists

被引:21
作者
Tegmark, M
机构
[1] MIT, Dept Phys, Cambridge, MA 02139 USA
[2] Univ Penn, Dept Phys, Philadelphia, PA 19104 USA
关键词
D O I
10.1088/0031-8949/2005/T121/023
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
I briefly review cosmological bounds on neutrino masses and the underlying gravitational physics at a level appropriate for readers outside the field of cosmology. For the case of three massive neutrinos with standard model freezeout, the current 95% upper limit on the sum of their masses is 0.42eV. I summarize the basic physical mechanism making matter clustering such a sensitive probe of massive neutrinos. I discuss the prospects of doing still better in coming years using tools such as lensing tomography, approaching a sensitivity around 0.03eV. Since the lower bound from atmospheric neutrino oscillations is around 0.05eV, upcoming cosmological measurements should detect neutrino mass if the technical and fiscal challenges can be met.
引用
收藏
页码:153 / 155
页数:3
相关论文
共 36 条
[1]   Neutrino mass and dark energy from weak lensing [J].
Abazajian, KN ;
Dodelson, S .
PHYSICAL REVIEW LETTERS, 2003, 91 (04)
[2]   Stringent constraints on cosmological neutrino-antineutrino asymmetries from synchronized flavor transformation [J].
Abazajian, KN ;
Beacom, JF ;
Bell, NF .
PHYSICAL REVIEW D, 2002, 66 (01) :1
[3]   Telling three from four neutrinos with cosmology [J].
Abazajian, KN .
ASTROPARTICLE PHYSICS, 2003, 19 (02) :303-312
[4]  
Bahcall JN, 2003, J HIGH ENERGY PHYS
[5]  
BASHINSKY S, 2003, ASTROPH0310198
[6]   First-year Wilkinson Microwave Anisotropy Probe (WMAP) observations:: Preliminary maps and basic results [J].
Bennett, CL ;
Halpern, M ;
Hinshaw, G ;
Jarosik, N ;
Kogut, A ;
Limon, M ;
Meyer, SS ;
Page, L ;
Spergel, DN ;
Tucker, GS ;
Wollack, E ;
Wright, EL ;
Barnes, C ;
Greason, MR ;
Hill, RS ;
Komatsu, E ;
Nolta, MR ;
Odegard, N ;
Peiris, HV ;
Verde, L ;
Weiland, JL .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2003, 148 (01) :1-27
[7]  
BOND JR, 1980, PHYS REV LETT, V45, P1980, DOI 10.1103/PhysRevLett.45.1980
[8]  
COLE S, 2005, ASTROPH0501174
[9]   Update on neutrino mixing in the early universe (vol 65, art no 043509, 2002) [J].
Di Bari, P .
PHYSICAL REVIEW D, 2003, 67 (12)
[10]   Update on neutrino mixing in the early universe [J].
Di Bari, P .
PHYSICAL REVIEW D, 2002, 65 (04)