TY - JOUR
T1 - Cosmic string loops in the expanding universe
AU - Olum, Ken D.
AU - Vanchurin, Vitaly
PY - 2007/3/29
Y1 - 2007/3/29
N2 - We study the production of loops in the cosmic string network in the expanding background by means of a numerical simulation exact in the flat-spacetime limit and first order in the expansion rate. We find an initial regime characterized by production of small loops at the scale of the initial correlation length, but later we see the emergence of a scaling regime of loop production. This qualitatively agrees with earlier expectations derived from the results of flat-spacetime simulations. In the final scaling regime we find that the characteristic length of loops scales as ∼0.1t in both radiation and matter eras.
AB - We study the production of loops in the cosmic string network in the expanding background by means of a numerical simulation exact in the flat-spacetime limit and first order in the expansion rate. We find an initial regime characterized by production of small loops at the scale of the initial correlation length, but later we see the emergence of a scaling regime of loop production. This qualitatively agrees with earlier expectations derived from the results of flat-spacetime simulations. In the final scaling regime we find that the characteristic length of loops scales as ∼0.1t in both radiation and matter eras.
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U2 - 10.1103/PhysRevD.75.063521
DO - 10.1103/PhysRevD.75.063521
M3 - Article
AN - SCOPUS:34047147377
SN - 1550-7998
VL - 75
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 6
M1 - 063521
ER -