|Subject: The dynamics of quantum general relativity
Date: Thu, 20 May 2004 13:31:44 +0300
From: Dimi Chakalov <email@example.com>
To: Charles W Misner <firstname.lastname@example.org>
CC: Richard L Arnowitt <email@example.com>, Stanley Deser <firstname.lastname@example.org>, Enrique Alvarez <email@example.com>, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org
Dear Professor Misner,
May I share with you my thoughts on your work, and then will ask you and your colleagues for your critical comments and suggestions.
In 1962, you and your colleagues published "The Dynamics of General Relativity" [Ref. 1], in which the task has been stated as follows: "Thus it is necessary that the metric field be separated into the parts carrying the true dynamical information and those parts characterizing the coordinate system."
In 1973, you briefly mentioned the complications that quantum physics is likely to introduce to the question of geodesic behavior ("Gravitation", p. 480).
In May 2004, we're still befuddled with what could "eventually redirect physics on a healthier track when we learn to recognise the physically relevant facts that presumably lie in front of our eyes." [Ref. 2]
Here's my recipe. The 'true dynamical information' [Ref. 1] is being stored in a hypothetical atemporal medium (global mode of spacetime),
The complications that quantum physics is likely to introduce to the question of geodesic behavior are sorted out by the dynamics of *the* quantum state,
It is strictly non-unitary,
The atemporal medium (global mode of spacetime) keeps all *potential* events, the 'unknown unknown' included. It does not permit any singularity, 'absolute zero of time' included [Ref. 3], since the universe has a dual age: infinite in the global mode of spacetime, and finite in the local mode of spacetime,
The local mode can be read by an inanimate physical clock, while the global mode can be experienced only with the human brain,
The good news is that we "pass away" only in the local mode.
I have to compete with each and every physicist there, on one little poster during a brief evening poster session, and have only Einstein on my side.
Your critical comments and suggestions will be highly appreciated, and will be kept strictly confidential.
I need your help, because the competition at GR17 may not be fair: one poster vs. all your colleagues. All of them *en bloc*.
Looking forward to hearing from you,
[Ref. 1] R. Arnowitt, S. Deser, and C.W. Misner, The Dynamics of General Relativity, gr-qc/0405109 v1. In: Gravitation: an Introduction to Current Research, ed. by Louis Witten (John Wiley & Sons, Inc., New York, 1962), Chapter 7, pp. 227-264.
"The general coordinate invariance underlying the theory
of relativity creates basic problems in the analysis of the dynamics of
the gravitational field. Usually, specification of the field amplitudes
and their first time derivatives initially is appropriate to determine
the time development of a field viewed as a dynamical entity. For general
relativity, however, the metric field g_µv may
be modified at any later time simply by carrying out a general coordinate
transformation. Such an operation does not involve any observable changes
in the physics, since it merely corresponds to a relabeling under which
the theory is invariant. Thus it is necessary that the metric field be
separated into the parts carrying the true dynamical information and those
parts characterizing the coordinate system."
[Ref. 2] Enrique Alvarez, Quantum Gravity, gr-qc/0405107 v1
"It is not clear at all what is the problem in quantum
gravity (cf.  or  for general reviews, written in the same spirit
as the present one). The answers to the following questions are not known,
and I believe it can do no harm to think about them before embarking in
a more technical discussion.
"This is the reason why all efforts such as the one in
the present workshop, aiming at making contact with experiment and/or observation
are welcome, and will eventually redirect physics on a healthier track
when we learn to recognise the physically relevant facts that presumably
lie in front of our eyes."
"The Universe is meaningfully infinitely old because infinitely
many things have happened since the beginning."