Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1992-09-30
Nucl.Phys. B412 (1994) 320-344
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
TeX Manuscript, 30 pages
Scientific paper
10.1016/0550-3213(94)90505-3
We have shown that two of the most studied models of lineal gravities - Liouville gravity and a ``string-inspired'' model exhibiting the main characteristic features of a black-hole solution - can be formulated as gauge invariant theories of the Poincar\'e group. The gauge invariant couplings to matter (particles, scalar and spinor fields) and explicit solutions for some matter field configurations, are provided. It is shown that both the models, as well as the couplings to matter, can be obtained as suitable dimensional reductions of a 2+1-dimensional ISO(2,1) gauge invariant theory.
Grignani Gianluca
Nardelli Giuseppe
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