Pair creation and decay of a massive particle near and far away from a cosmic string

Details Pair creation and decay of a massive particle near and far away from a cosmic string Pair creation and decay of a massive particle near and far away from a cosmic string

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phrvd..45.1103a&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 45, Issue 4, 15 February 1992, pp.1103-1112

Mathematics

Probability

6

Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

We study the total transition probabilities of the tree-level processes of the pair creation and decay of a massive particle for real Klein-Gordon fields in the spacetime of an infinite straight static cosmic string. Basing the discussion on cylindrical modes characterized by an approximate radius of closest approach rmin, it is possible to approximately localize the non-Minkowskian processes to cylindrical effective interaction regions around the cosmic string. A physical understanding of the space dependence of the transition probabilities is obtained on the basis of analytic expressions for different energy domains referring to regions close to and far away from the string. For pair creation the Compton wavelength λC of the created particles proves to be a crucial length scale. For rmin<<λC the creation probability is insensitive to a variation of rmin. For large rmin it falls off at least exponentially with rmin. This agrees with an alternative ``integrated'' approach to localization: the cross section around the cosmic string is proportional to the Compton wavelength λC. The decay of the massive particle on the other hand contains processes allowed in Minkowski spacetime and leads to another type of local behavior.

Affiliated with

Also associated with

No associations

Rating

Pair creation and decay of a massive particle near and far away from a cosmic string does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Pair creation and decay of a massive particle near and far away from a cosmic string, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pair creation and decay of a massive particle near and far away from a cosmic string will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1051351