sci.physics.strings Google Group

Re: Why is the Majorana mass of a neutrino so big compared to the

2008-06-10T16:59:47Z

Stimulated by Rock B's explanation, I've just learned from the
references in Wikipedia that explain this whole matter
straightforwardly:
[link]
[link]
[link]
Regards - P

Re: Why is the Majorana mass of a neutrino so big compared to the

2008-06-09T19:47:58Z

It has nothing per se to do with string theory, but is a somewhat
standard part of folklore in neutrino physics. The *left* neutrino and
*right* anti-neutrino have small masses. The *right* neutrino and
*left* anti-neutrino, on the other hand, are usually stipulated to
have large masses. This is part of the See Saw mechanism and is used

Why is the Majorana mass of a neutrino so big compared to the

2008-06-07T19:49:05Z

[Moderator's note: Quoted-printable stuff NOT corrected. Sometimes I
correct small errors, but a) there are several here and b) it is not
obvious what the meaning should be. Please submit only 100% 7-bit ASCII
plain-text posts. Even if YOU can read something fancier, many readers
can't. -P.H.]

Re: Modification of Energy-Momentum Relation and UV/IR mixing

2008-05-06T02:40:38Z

Sorry, I'm not sure I can refer you to immediately relevant papers.
The concept of UV/IR mixing that I've seen came up in the context of
non-commutative field theory. That is, field theory defined on a space-
time where coordinates do not commute. A standard reference for
physicists is a paper by Douglass & Nekrasov [1]. The mathematical

Modification of Energy-Momentum Relation and UV/IR mixing

2008-05-03T21:20:13Z

modified by UV/IR mxing.
In other words, the speaker claimed that the lowest energy is achived
not by zero momentum, but by non-zero momentum. Could somebody refer
me to a relevant paper?
Thanks in advance
Youngsub

Detecting large extra dimensions via "mini black holes"?

2007-12-30T18:24:12Z

Occasionally I come across something explaining that one of the
possible discoveries at the Large Hadron Collider might be the
production of "mini black holes", which if found would demonstrate the
existence of large extra dimensions. The idea, at least as I
understand it, is supposed to be that gravity in an more-than-four-

Re: QG/QM without spacetime

2007-12-24T15:35:16Z

There is a number of penetrating papers by J. Barbour
[link]
[link] (and other related papers
cited in the first reference above),
as well as his book "The End of Times", (Oxford Univ Press, 2000).
See also [link] (pages 107-163),

Re: QG/QM without spacetime

2007-12-22T23:35:02Z

On 3 Nov., 16:23, "astroques...@gmail.com" <astroques...@gmail.com>
wrote:
See gr-qc/0205035 for my approach.
Ilja

QG/QM without spacetime

2007-11-03T15:23:10Z

I'm beginning a research on the different approaches to QG (or also
calssical QM) where the attempt to introduce the notion of spacetime
as an emergent concept is made. I would like to find for introductory
material which describes in one (or few) papers these different
approaches giving first an overview on the subject. Can anyone suggest

Re: D!=26 anomalies

2007-09-27T11:04:07Z

I don't know if this is nice and simple, but the idea is this, at
least in part.
The Weyl anomaly implies that the group of conformal transformations
(the group of diffeomorphisms which have the effect of rescaling the
metric)
is no longer a symmetry of the theory. The Lorentz anomaly occurs in
the light

D!=26 anomalies

2007-09-21T15:28:25Z

is there a nice and simple way to see how worldsheet weyl anomaly
translates into target spacetime lorentz anomaly, in bosonic string
theory?

REPOST: ANNOUNCE: sci.physics.foundations has been created

2007-02-15T15:17:06Z

On 07 Feb 2007, the Big-8 Management Board decided to create the moderated
group sci.physics.foundations. The group was created on 13 Feb 2007.
For more information on the proposal and history, please refer to the
archives:
[link]

ANNOUNCE: sci.physics.foundations has been created

2007-02-14T05:14:38Z

RESULT: sci.physics.foundations will be created

2007-02-14T04:28:50Z

RESULT
sci.physics.foundations will be created
The Last Call for Comments on 31 Jan 2006 initiated a five-day period for
final comments. Following this comment period, the Big-8 Management Board
has decided by consensus to create the newsgroup sci.physics.foundations.

RESULT: sci.physics.foundations will be created

2007-02-07T15:10:56Z