We consider a general two-dimensional gravity model minimally or nonminimally coupled to a scalar field. The canonical form of the model is elucidated, and a general solution of the equations of motion in the massless case is reviewed. In the presence of a scalar field all geometric fields (zweibein
Hamiltonian and recursion operators for two-dimensional scalar fields
โ Scribed by A.G Meshkov
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 302 KB
- Volume
- 170
- Category
- Article
- ISSN
- 0375-9601
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๐ SIMILAR VOLUMES
A general procedure is presented for the derivation of property operators for electric and magnetic perturbations for Hamiltonians derived from the Dirac Hamiltonian by a partially block-diagonalizing unitary transformation. The procedure involves a regularized expansion in powers of p 2 /m 2 c 2 .
## Abstract The spectrum of the twoโdimensional Schrรถdinger operator with strong magnetic field and electric potential is contained in a union of intervals centered on the Landau levels. The study of the spectrum in any of these intervals is reduced by unitary equivalence to the study of a oneโdime