2003/05/31 by G. D’Appollonio, Giuseppe D'Appollonio, Elias Kiritsis · 1 citation
Physics and Astronomy · #Astronomy #Black Holes and Theoretical Physics #Classical mechanics #Cosmology and Gravitation Theories #Gravitation #Gravitational wave #Physics #Pulsars and Gravitational Waves Research #Quantum electrodynamics #String (physics) #Theoretical physics #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2003.09.020
published as Nucl.Phys. B674 (2003) 80-170 · 99 pages, LateX (v2) The discussion of the flat space limit has been changed (v3) Final version that appeared in Nucl. Phys B
openalex publication_date 2003/10/16 · arxiv created 2003/12/25 · arxiv updated 2010/04/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The non-compact CFT of a class of NS-supported pp-wave backgrounds is solved exactly. The associated tree-level covariant string scattering amplitudes are calculated. The S-matrix elements are well-defined, dual but not analytic as a function of p+. They have poles corresponding to physical intermediate states with p+\not =0 and logarithmic branch cuts due to on-shell exchange of spectral-flow images of p+=0 states. When μ→ 0 a smooth flat space limit is obtained. The μ→∞ limit, unlike the case of RR-supported pp-waves, gives again a flat space theory.