Kiefer C. Quantum gravity

338 REFERENCES
Giulini, D. (2003). That strange procedure called quantisation. In Quantum
gravity: from theory to experimental search (ed. D. Giulini, C. Kiefer, and
C. Lämmerzahl), pp. 17–40. Lecture Notes in Physics 631. Springer, Berlin.
Giulini, D. (2007). What is general covariance and background independence?
To appear in Theoretical approaches to fundamental physics – an assessment
of current ideas (ed. E. Seiler and I.-O. Stamatescu). Springer, Berlin.
Giulini, D. and Kiefer, C. (1994). Wheeler–DeWitt metric and the attractivity
of gravity. Phys. Lett. A, 193, 21–4.
Giulini, D. and Kiefer, C. (1995). Consistency of semiclassical gravity. Class.
Quantum Grav., 12, 403–11.
Giulini, D. and Kiefer, C. (2007). The canonical approach to quantum gravity –
general ideas and geometrodynamics. To appear in Theoretical approaches to
fundamental physics – an assessment of current ideas (ed. E. Seiler and I.-O.
Stamatescu). Springer, Berlin.
Giulini, D. and Marolf, D. (1999). A uniqueness theorem for constraint quantization.
Class. Quantum Grav., 16, 2489–505.
Gorelik, G. E. (1992). The first steps of quantum gravity and the Planck values.
In Studies in the history of general relativity (ed. J. Eisenstaedt and A. J.
Knox), pp. 367–82. Birkhäuser, Boston.
Goroff, M. H. and Sagnotti, A. (1985). Quantum gravity at two loops. Phys.
Lett. B, 160, 81–6.
Gousheh, S. S. and Sepangi, H. R. (2000). Wave packets and initial conditions
in quantum cosmology. Phys. Lett. A, 272, 304–12.
Green, A. M. and Liddle, A. R. (1997). Constraints on the density perturbation
spectrum from primordial black holes. Phys. Rev. D, 56, 6166–74.
Green, D. and W. G. Unruh (2004). Difficulties with recollapsing models in
closed isotropic loop quantum cosmology. Phys. Rev. D, 70, 103502 [7 pages].
Green, M. B., Schwarz, J. H., and Witten, E. (1987). Superstring theory, 2vols.
Cambridge University Press, Cambridge.
Greene, B. (1997). String theory on Calabi–Yau manifolds. http://arxiv.org/abs/
hep-th/9702155 [150 pages] (cited on December 15, 2006).
Grib, A. A., Mamayev, S. G., and Mostepanenko, V. M. (1994). Vacuum effects
in strong fields. Friedmann Laboratory Publishing, St. Petersburg.
Grishchuk, L. P. and Sidorov, Y. V. (1990). Squeezed quantum states of relic
gravitons and primordial density fluctuations. Phys. Rev. D, 42, 3413–21.
Gross, D. and Periwal, V. (1988). String perturbation theory diverges. Phys.
Rev. Lett., 60, 2105–8.
Grumiller, D., Kummer, W., and Vassilevich, D. V. (2002). Dilaton gravity in
two dimensions. Phys. Rep., 369, 327–430.
Haag, R., Lopuszanski, J. T., and Sohnius, M. (1975). All possible generators
of supersymmetries of the S matrix. Nucl. Phys. B, 88, 257–74.
Hájíček, P. (2001). Unitary dynamics of spherical null gravitating shells. Nucl.
Phys. B, 603, 555–77.
Hájíček, P. (2003). Quantum theory of gravitational collapse (lecture notes on