This sounds too weird for me.
-----Original Message-----
From: Saibal Mitra [mailto:smitra.domain.name.hidden]
Sent: Monday, October 10, 2005 4:54 PM
To: everything
Subject: Tegmark's prediction of neutrino masses
Since we are discussing neutrinos, I thought it is fun to mention
antropic constraints on neutrino masses derived by Tegmark, see here:
http://arxiv.org/abs/astro-ph/0304536
Anthropic predictions for neutrino masses
Authors: Max Tegmark (MIT), Alexander Vilenkin (Tufts), Levon Pogosian
(Tufts)
Categories: astro-ph
Comments: Revised to match accepted PRD version. Added references,
discussion of very heavy neutrinos, analytic growth factor fit. 9 pages,
4 figs. Color figs and links at this http URL
Journal-ref: Phys.Rev. D71 (2005) 103523
It is argued that small values of the neutrino masses may be due to
anthropic selection effects. If this is the case, then the combined mass
of the three neutrino species is expected to be ~1eV, neutrinos causing
a non-negligible suppression of galaxy formation.
http://arxiv.org/abs/astro-ph/0404497
Anthropic predictions for vacuum energy and neutrino masses
Authors: Levon Pogosian, Alexander Vilenkin, Max Tegmark
Categories: astro-ph gr-qc hep-th
Comments: 9 pages, 4 figures
Journal-ref: JCAP 0407 (2004) 005
It is argued that the observed vacuum energy density and the small
values of the neutrino masses could be due to anthropic selection
effects. Until now, these two quantities have been treated separately
from each other and, in particular, anthropic predictions for the vacuum
energy were made under the assumption of zero neutrino masses. Here we
consider two cases. In the first, we calculate predictions for the
vacuum energy for a fixed (generally
non-zero) value of the neutrino mass. In the second we allow both
quantities to vary from one part of the universe to another. We find
that the anthropic predictions for the vacuum energy density are in a
better agreement with observations when one allows for non-zero neutrino
masses. We also find that the individual distributions for the vacuum
energy and the neutrino masses are reasonably robust and do not change
drastically when one adds the other variable.
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Received on Mon Oct 10 2005 - 20:19:48 PDT