Pp-waves as exact solutions to ghost-free infinite derivative gravity


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KILIÇARSLAN E.

Physical Review D, cilt.99, sa.12, 2019 (SCI-Expanded, Scopus) identifier identifier

Özet

We construct exact pp-wave solutions of ghost-free infinite derivative gravity. These waves described in the Kerr-Schild form also solve the linearized field equations of the theory. We also find an exact gravitational shock wave with nonsingular curvature invariants and with a finite limit in the ultraviolet regime of nonlocality which is in contrast to the divergent limit in Einstein's theory.