Classical Solution of Two Dimensional $R^2$-Gravity and Cross-Over Phenomenon

Details Classical Solution of Two Dimensional $R^2$-Gravity and Cross-Over Phenomenon Classical Solution of Two Dimensional $R^2$-Gravity and Cross-Over Phenomenon

1995-02-16

arxiv.org/abs/hep-th/9502101v1

Nucl.Phys.B445:295-310,1995

Physics

High Energy Physics

High Energy Physics - Theory

16 pages

Scientific paper

10.1016/0550-3213(95)00133-D

Two dimensional quantum R$^2$-gravity and its phase structure are examined in the semiclassical approach and compared with the results of the numerical simulation. Three phases are succinctly characterized by the effective action. A classical solution of R$^2$-Liouville equation is obtained by use of the solution of the ordinary Liouville equation. The partition function is obtained analytically. A toatal derivative term (surface term) plays an important role there. It is shown that the classical solution can sufficiently account for the cross-over transition of the surface property seen in the numerical simulation.

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