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Article
Report number	hep-th/9309037 ; CERN-TH-6904-93 ; CERN-TH-6904-93-REV
Title	Planckian energy scattering and surface terms in the gravitational action
Edition	rev. version
Author(s)	Fabbrichesi, Marco E ; Pettorino, R ; Veneziano, Gabriele ; Vilkovisky, G A
Affiliation	(CERN) ; (Univ. Napoli) ; (Lebedev Phys. Inst. Res. Cent. Phys. Moscow)
Publication	1994
Imprint	7 Sep 1993
Number of pages	46
In:	Nucl. Phys. B 419 (1994) 147-188
DOI	10.1016/0550-3213(94)90361-1
Subject category	General Theoretical Physics ; Particle Physics - Theory
Abstract	This is a revised version of our previous paper by the same name and preprint number. It contains various changes, two figures and new results in sect.5. We propose a new approach to four-dimensional Planckian-energy scattering in which the phase of the ${\cal S}$-matrix is written---to leading order in $\hbar$ and to all orders in $R/b =Gs/J$---in terms of the surface term of the gravity action and of a boundary term for the colliding quanta. The proposal is checked at the leading order in $R/b$ and also against some known examples of scattering in strong gravitational fields.

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