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- From: phfrom@nyx.uni-konstanz.de (Hartmut Frommert)
- Subject: Re: No big crunch?
- Message-ID: <phfrom.370@nyx.uni-konstanz.de>
- Sender: usenet@eratu.rz.uni-konstanz.de
- Organization: Dept. of Physics, University of Constance
- References: <1992Oct28.024617.5756@fs7.ece.cmu.edu> <28OCT199210483058@csa2.lbl.gov> <MATT.92Oct29110349@physics2.berkeley.edu> <phfrom.369@nyx.uni-konstanz.de>
- Date: Thu, 5 Nov 1992 09:58:33 GMT
- Lines: 24
-
- matt@physics2.berkeley.edu (Matt Austern) writes:
-
- >The problem is that there is evidence for dark matter on all distance
- >scales, but when you look on longer distance scales, the amount of
- >dark matter appears to be greater. (I find it fascinating, actually,
- >that this effect seems to be monatonic.)
-
- Besides my remark on the similarity to cosmological constant, I want to
- state that such an effect could perhaps be modelled by a finite range
- model for gravity, i.e. something like "massive" gravitons. BTW, the
- cosmological constant appears in the linearized Einstein field eq
-
- ,lambda
- h + Lambda ( eta + h ) =
- mu nu ,lambda mu nu mu nu
-
- = 8 pi G ( T - T eta )
- mu nu mu nu
-
- also as a mass-like term for h_{mu nu} or g_{mu nu} (g=eta+h, of course).
- --
- Hartmut Frommert <phfrom@nyx.uni-konstanz.de>
- Dept of Physics, Univ of Constance, P.O.Box 55 60, D-W-7750 Konstanz, Germany
- -- Eat whale killers, not whales --
-