Pei-Ming Ho 2004 Class. Quantum Grav. 21 2641 doi:10.1088/0264-9381/21/11/009
Pei-Ming Ho
Show affiliationsWe consider the possibility that the UV completeness of a fundamental theory is achieved by a modification of propagators at large momenta. We assume that general covariance is preserved at all energies, and focus on the coupling of a scalar field to the background geometry as an example. Naively, one expects that the gravitational interaction, like Yukawa interactions, will be regularized by a propagator which decays to zero sufficiently fast above some cut-off scale, but we show that in order to avoid the ultraviolet divergence, the propagator should approach a nonzero constant. This incompatibility between the regularizations of gravitational and Yukawa interactions suggests that a symmetry of the particle spectrum is needed for a UV-complete fundamental theory.
Issue 11 (7 June 2004)
Received 4 December 2003
Published 26 April 2004
Pei-Ming Ho 2004 Class. Quantum Grav. 21 2641
M Plummer and C J Noble 2003 J. Phys. B: At. Mol. Opt. Phys. 36 L219
A Levstik et al 1998 J. Phys. D: Appl. Phys. 31 2894
M A N Araújo et al 2009 New J. Phys. 11 113008
Sung-Won Youn et al 2009 J. Micromech. Microeng. 19 125010
E Przeździecka et al 2007 Semicond. Sci. Technol. 22 10
A Dimakis et al 1996 J. Phys. A: Math. Gen. 29 6861
A J Venning et al 2005 Phys. Med. Biol. 50 3875
A Kivimäki et al 2009 J. Phys.: Conf. Ser. 190 012051
Yutaka Fujita 2005 ApJ 631 L17