| Topic: |
Science > Physics |
| User: |
"OsherD" |
| Date: |
09 Aug 2005 12:33:20 AM |
| Object: |
Triple Codes 5: 6-Dimensional Gauged Supergravity |
From Osher Doctorow
COPYRIGHT NOTICE
Triple Codes 5: 6-Dimensional Gauged Supergravity
Copyright By Owner Osher Doctorow Ph.D.
First Published 2005
Soyros D. Avramis of National Technical U. of Athens and Alex Kehagias
(same address) and S. Randjbar-Daemi of International Center for
Theoretical Physics Trieste Italy in "A new anomaly-free gauged
supergravity in six dimensions," hep-th/0504033 v2 8 Apr 2005, have
come up with an interesting 6 dimensional (D = 6) minimal supergravity
theory compactifying to R^4 x S^2 (D = 4, N = 2) with spontaneous
monopole background compactification (residing) on S^2.
Since dimensions according to PI Theory come in triples (3 spatial or
length dimensions, 3 time dimensions, 3 mass dimensions (including mass
as inertia, mass as inertia, mass as curvature), with occasional
exceptions (like 1 or 2 force dimensions), a 6 dimensional theory would
fit in quite nicely in PI (Probable Influence) with two triples, for
example 3 space and 3 mass dimensions or more plausibly 3 space and 3
time dimensions. A second possibility would be 2 space (length)
dimensions, 2 time dimensions, and 2 mass dimensions. The 2 time
dimensions would presumably be time as duration and time as causation.
Although R^4 suggests 3 space and 1 time dimensionm, leaving only 2
dimensions for mass or forces or time, one of those time dimensions in
R^4 and two in S^2 would yield 3 time dimensions as an alternative
mentioned.
Notice that if D = 6 involves 3 spatial and 3 time dimensions, then
since the three time dimensions in PI are time as duration, time as
causation, and time as transfer of causation, the gauged supergravity
would have an unusually strong "component" of causation.
One might develop observer criteria for different multiverses (if they
exist) depending on how much causation there is in some sample of
events/things/processes. At one extreme, (almost) everything would
exert causation on (almost) everything else, while at another extreme,
almost nothing would exert causation on almost anything else. There's
even the possibility that a universe going from a "Big Bang" to an
accelerated expansion scenario would be "multiverse hopping" from high
to low causation types or vice versa. Avramis et al don't consider
these aspects.
Osher Doctorow
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| User: "OsherD" |
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| Title: Re: Triple Codes 5: 6-Dimensional Gauged Supergravity |
09 Aug 2005 12:45:54 AM |
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From Osher Doctorow
Avramis et al (2005) point out that minimal supergravity theories in 6
dimensions have several reasons motivating their study:
A. Connection/relation to superstring vacua.
B. Relation to N = 2 theories in D = 4.
C. Framework that they provide for cosmological investigations.
D. For the minimal gauge supergravities in D = 6, unlike superstring
theories in D = 10, the former don't admit the flat spaces as their
most symmetric solutions.
E. These models, like D = 10 supergravities, admit brane solutions of
various dimensions.
Osher Doctorow
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| User: "OsherD" |
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| Title: Re: Triple Codes 5: 6-Dimensional Gauged Supergravity |
09 Aug 2005 12:50:10 AM |
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From Osher Doctorow
The name "Soyros" should have been typed "Spyros." Maybe I was
thinking "Soylent Green", the old movie?
Osher Doctorow
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