-35 -30 -25 -20 -15 -10 -5  0  100  200  300  400  500  600  700  800 log 10 ( GW ) m$_{3/2}$t =10 -4 =10 5 =10 -6 -35 -30 -25 -20 -15 -10 -5  0  200 400 600 800 1000 1200 1400 1600 log 10 ( GW ) m$_{3/2}$t K=-0.025 K=-0.05 K=-0.1 K=-0.2 K=0.0 FIG. 18: The final amplitude of the gravity waves does not depend on the initial perturbations, δ , and The final amplitude of gravity waves saturates for different values of K . Note for K = 0 there is no fragmentation at all, therefore there is no gravity waves.The field value is: φ$_{0}$ = 10 16 GeV and m ∼ m$_{3}$$_{/}$$_{2}$ = 100 GeV. fractional energy density can be estimated by following Eq. (403), given by [783, 784] $^{86}$: Ω$_{GW}$ = ρ$_{GW}$ m $^{2}$φ ( t ) 2 ∼ | K | 2 ( φ ( t ) M$_{Pl}$ ) 2 . (407) The scalar field is dominating the energy density of the universe at the time of fragmentation. For physically motivating parameters, we have chosen; m ∼ 100 GeV, φ ( t ) ∼ 10 16 GeV, and H ( t ) ∼ 1 GeV, therefore, for a reasonable value of K ∼ 0 . 1, we obtain, Ω$_{GW}$ ∼ 10 − $^{6}$. Including the cosmological expansion, the current abundance of gravity waves will be: Ω$_{GW}$ h 2 ∼ 10 − $^{11}$, where h ∼ 0 . 7 is the Hubble constant, with a peak frequency ranging from mHz –10 Hz. Note that Ω$_{GW}$ depends on the value of K , for K = 0 there are no excitations of gravity waves, see Fig. (18). 86 This is one of the realistic cases of gravity wave production from the fragmentation of a SUSY flat direction due to running of the soft scalar masses within MSSM. In Refs. [783, 784] it was argued that only B − L = 0 flat direction can dominate the energy density at the time of the fragmentation. Rest of the other MSSM flat directions will generate possibly too large baryon asymmetry. There is also a study of gravity wave production in a simple toy model with a complex scalar field in Ref. [809]. 188