Dear Professor Kawasaki,

I'm reading your astro-ph/0307442 [Ref. 1] with great interest. You and Dr. Dolgov suggested that "the non-compensated remnant of the vacuum energy could be an excellent candidate for the observed today dark energy", but stressed that you "do not intend to present a detailed discussion of cosmology".

I'm wondering if you could suggest an explanation of some (your choice) GRB engine and its peculiar afterglow, which I think could be far less speculative than cosmology,

http://members.aon.at/chakalov/Tegmark.html#note

I hope you would refrain from black holes, jets, etc., like Martin Rees, to explain the energy release of GRBs,

http://science.nasa.gov/newhome/pad/batse/batseskymap.htm

Maybe your non-compensated remnant of the vacuum energy density could fit the bill. BTW is it always *positive* energy density?

Respectfully yours,

Dimiter G. Chakalov
http://members.aon.at/chakalov
--
Dead matter makes quantum jumps; the living-and-quantum matter is smarter.
 

Reference

[Ref. 1] A.D. Dolgov, M. Kawasaki, Realistic cosmological model with dynamical cancellation of vacuum energy, Fri, 25 Jul 2003 05:59:24 GMT,
http://xxx.lanl.gov/abs/astro-ph/0307442
 
 

Note: The reason why I suggested to Masahiro Kawasaki to study the GRB engine (cf. A. Beloborodov, astro-ph/0404368) is that I am skeptical regarding Alex Dolgov's idea of dynamical adjustment of vacuum energy (A.D. Dolgov, in: The very early universe, eds. G. Gibbons, S.W. Hawking, and S.T. Tiklos, Cambridge University Press, 1982, p. 449): "only a moderate success can be reported" (A.D. Dolgov and M. Kawasaki, astro-ph/0310822). Perhaps such disappointing result is inevitable in any higher derivative modifications of gravity (D. Comelli and A.D. Dolgov, gr-qc/0404065).

Alex Dolgov has suggested that "there must be some unusual form of energy due to a non-complete compensation of vacuum [17, 4] energy" (A.D. Dolgov, hep-ph/0203245). I've speculated about such dynamical and non-complete compensation of vacuum energy here. The main idea is here. It's all about the dynamics of the cosmological time, as suggested on November 3, 2002. It probably requires solving the puzzle of negative energy densities and naked singularities (T. Harada et al., gr-qc/0003036), which is why I thought that the first step would be to study the GRB engine. In general, I agree with Alex Dolgov and Masahiro Kawasaki [Ref. 1] that the matter might be created by the gravity itself, without any post hoc inflaton field. We can always have some scalar field created ex nihilo at a later time, since the "main source" contains absolutely everything.

The mysterious cancellation of vacuum (?) energy, and the mysterious release of vacuum (?) energy in GRBs may be two sides of the same T-invariant Holon residing in the global mode of spacetime. In the local mode of spacetime, we always have two "directions" of time. However, they should come with their respective 3-D space counterparts: implosion for the dark matter, and explosion/expansion for the dark energy. Has anyone proved that Bill Unruh's "mysterious time" does not lead to some space-inversion as well? How else you would get these 96 percent "dark stuff", and keep it "dark" and completely balanced (the coincidence problem) forever? Read about it here.

Perhaps the solution is right above our neck, but is anyone interested in exploring it? No reply in the past ten months, since August 6, 2003. Can you study the dark energy with dark silence, like Steven Weinberg? If you can, you're ripe for the anthropic principle.
 

D. Chakalov
June 8, 2004
Last update: June 15, 2004