Lecture abstract

Time:   4. October 2010
Place:   Departamento de Matemática, Faculdade de Ciências e Tecnologia, Universidade do Algarve
Title:   Large-spin asymptotics of the LQG wavefunctions
Abstract:
By using the stationary-point approximation and asymptotic formula for the vertex amplitude of the EPRL spin-foam model we show that the large-spin asymptotics of flat space Hartle-Hawking LQG wavefunction cannot be of the Gaussian type required by the existence of the correct graviton propagator in the semiclassical limit.