Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1993-08-05
Phys.Rev.D49:2852-2861,1994; Russ.Phys.J.37:903-908,1994; Izv.Vuz.Fiz.37N9:116-121,1994
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX, 25 pages, july 24
Scientific paper
10.1103/PhysRevD.49.2852
Two dimensional dilaton gravity interacting with a four-fermion model and scalars is investigated, all the coefficients of the Lagrangian being arbitrary functions of the dilaton field. The one-loop covariant effective action for 2D dilaton gravity with Majorana spinors (including the four-fermion interaction) is obtained, and the technical problems which appear in an attempt at generalizing such calculations to the case of the most general four-fermion model described by Dirac fermions are discussed. A solution to these problems is found, based on its reduction to the Majorana spinor case. The general covariant effective action for 2D dilaton gravity with the four-fermion model described by Dirac spinors is given. The one-loop renormalization of dilaton gravity with Majorana spinors is carried out and the specific conditions for multiplicative renormalizability are found. A comparison with the same theory but with a classical gravitational field is done.
Elizalde Emilio
Naftulin S.
Odintsov Sergei D.
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