Built on

Y. V. Kuz’min, “The Convergent Nonlocal Gravitation. (in Russian),” Sov. J. Nucl. Phys. 50
1989
Earlier work this paper cites.
V. A. Kostelecky and S. Samuel, “Collective Physics in the Closed Bosonic String,” Phys. Rev. D 42
1990
Earlier work this paper cites.
D. N. Kabat and M. Ortiz, “Eikonal quantum gravity and Planckian scattering,” Nucl. Phys. B 388
1992
Earlier work this paper cites.
D. Anselmi and M. Halat, “Renormalizable acausal theories of classical gravity coupled with interacting quantum fields,” Class. Quant. Grav. 24
2007
Earlier work this paper cites.
S. B. Giddings and R. A. Porto, “The Gravitational S-matrix,” Phys. Rev. D 81
Original
2010
Earlier work this paper cites.
G. Calcagni and G. Nardelli, “String theory as a diffusing system,” JHEP 1002
Original
2010
Earlier work this paper cites.
L. Modesto, “Super-renormalizable Quantum Gravity,” Phys. Rev. D 86
Original
2012
Earlier work this paper cites.
L. Modesto and L. Rachwal, “Super-renormalizable and finite gravitational theories,” Nucl. Phys. B 889
Original
2014
Earlier work this paper cites.
M. Ciafaloni and D. Colferai, “Rescattering corrections and self-consistent metric in Planckian scattering,” JHEP 1410
Original
2014
Earlier work this paper cites.

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Then

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2018

Causality in Nonlocal Gravity

Giaccari, Stefano, Modesto, Leonardo

Understand

We study the causal structure of a class of weakly nonlocal gravitational theories (eventually coupled to matter) that are compatible with perturbative unitarity and finiteness at quantum level.

In particular, we show that in nonlocal quantum gravity a Shapiro's time advance never occurs.
Moreover, we provide a recipe to construct a general ultraviolet complete gravitational theory coupled to matter (with or without supersymmetry) compatible with causality.
Therefore, nonlocal gravity is consistent with causality, as well as string theory.

Built on

Y. V. Kuz’min, “The Convergent Nonlocal Gravitation. (in Russian),” Sov. J. Nucl. Phys. 50
1989
Earlier work this paper cites.
V. A. Kostelecky and S. Samuel, “Collective Physics in the Closed Bosonic String,” Phys. Rev. D 42
1990
Earlier work this paper cites.
D. N. Kabat and M. Ortiz, “Eikonal quantum gravity and Planckian scattering,” Nucl. Phys. B 388
1992
Earlier work this paper cites.
D. Anselmi and M. Halat, “Renormalizable acausal theories of classical gravity coupled with interacting quantum fields,” Class. Quant. Grav. 24
2007
Earlier work this paper cites.
S. B. Giddings and R. A. Porto, “The Gravitational S-matrix,” Phys. Rev. D 81
Original
2010
Earlier work this paper cites.
G. Calcagni and G. Nardelli, “String theory as a diffusing system,” JHEP 1002
Original
2010
Earlier work this paper cites.
L. Modesto, “Super-renormalizable Quantum Gravity,” Phys. Rev. D 86
Original
2012
Earlier work this paper cites.
L. Modesto and L. Rachwal, “Super-renormalizable and finite gravitational theories,” Nucl. Phys. B 889
Original
2014
Earlier work this paper cites.
M. Ciafaloni and D. Colferai, “Rescattering corrections and self-consistent metric in Planckian scattering,” JHEP 1410
Original
2014
Earlier work this paper cites.