Ju l 2 00 5 SPIN-2003 / 14 ITP-UU-03 / 24 Sum over topologies and double-scaling limit in 2 D Lorentzian quantum gravity

@inproceedings{Loll2005JuL2,
  title={Ju l 2 00 5 SPIN-2003 / 14 ITP-UU-03 / 24 Sum over topologies and double-scaling limit in 2 D Lorentzian quantum gravity},
  author={Renate Loll and W. Westra},
  year={2005}
}
We construct a combined non-perturbative path integral over geometries and topologies for two-dimensional Lorentzian quantum gravity. The Lorentzian structure is used in an essential way to exclude geometries with unacceptably large causality violations. The remaining sum can be performed analytically and possesses a unique and welldefined double-scaling limit, a property which has eluded similar models of Euclidean quantum gravity in the past. 1 Summing over topologies? A central question that… CONTINUE READING

References

Publications referenced by this paper.
Showing 1-8 of 8 references

Acta Phys

R. Loll, W. Westra
Polonica B 34, 4997 • 2003
View 2 Excerpts

in The future of theoretical physics and cosmology

F. Dowker
ed. G.W. Gibbons, E.P.S. Shellard and S.J. Rankin, Cambridge Univ. Press, 436 • 2003
View 1 Excerpt

Nucl

A. Dasgupta, R. Loll
Phys. B 606, 357 • 2001

Phys

J. Ambjørn, K. N. Anagnostopoulos, R. Loll
Rev. D 61, 044010 • 2000

Class

J. Louko, R. D. Sorkin
Quant. Grav. 14, 179 • 1997
View 1 Excerpt

in Gravitation and Quantizations

F. David
ed. J. Zinn-Justin and B. Julia, North- Holland, 679 (1995) [hep-th/9303127]; P. Di Francesco, P. Ginsparg and J. Zinn- Justin, Phys. Rept. 254, 1 (1995); J. Ambjørn, B. Durhuus and T. Jonsson, Quantum Geometry, Cambridge Monogr. Math. Phys. 1 • 1997
View 2 Excerpts

Int

S. B. Giddings
J. Mod. Phys. A5, 3811 • 1990
View 1 Excerpt

Ann

J. A. Wheeler
Phys. 2, 604 • 1957
View 1 Excerpt

Similar Papers

Loading similar papers…