The Cauchy problem for the homogeneous Monge-Ampere equation, I. Toeplitz quantization

Details The Cauchy problem for the homogeneous Monge-Ampere equation, I. Toeplitz quantization The Cauchy problem for the homogeneous Monge-Ampere equation, I. Toeplitz quantization

2010-08-20

arxiv.org/abs/1008.3577v3

J. Differential Geom. 90 (2012), 303-327

Mathematics

Differential Geometry

v2,3: minor changes and added references

Scientific paper

The Cauchy problem for the homogeneous (real and complex) Monge-Ampere equation (HRMA/HCMA) arises from the initial value problem for geodesics in the space of Kahler metrics. It is an ill-posed problem. We conjecture that, in its lifespan, the solution can be obtained by Toeplitz quantizing the Hamiltonian flow defined by the Cauchy data, analytically continuing the quantization, and then taking a kind of logarithmic classical limit. In this article, we prove that in the case of torus invariant metrics (where the HCMA reduces to the HRMA) this "quantum analytic continuation potential" coincides with the well-known Legendre transform potential, and hence solves the equation as long as it is smooth. In the sequel we prove that the Legendre transform potential ceases to solve the HRMA after that time.

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