Coincidence Problem Current QA=0.73= con st.Ω 0.27 At the r-m equality with 1+2=3500 92A=6.3×10-1gm 2021/1/25
2021/1/25 6 Coincidence Problem：
strategy construct a tracking solution the present state is insensitive to the initial conditions 2021/1/25
2021/1/25 7 strategy: construct a tracking solution, the present state is insensitive to the initial conditions
Effective Yang-Mills condensate Idea: What if the universe is filled with quantum effective YM condensate as the ground state? The universe is quite similar to the QCD vacuum in hadrons, to which the quantum effective yang-Mills condensate contributes 2021/1/25 8
2021/1/25 8 Effective Yang-Mills condensate: Idea: What if the Universe is filled with quantum effective YM condensate as the ground state? The universe is quite similar to the QCD vacuum in hadrons, to which the quantum effective Yang-Mills condensate contributes
Recall MIT Bag Constant Idea: Quarks inside hadrons feel a vacuum with P=B, p=-B, where B is MIT Bag constant QCD vacuum in hadrons can be phenomenologically described by the B to which the gluon condensate contributes 2021/1/25
2021/1/25 9 Recall : MIT Bag Constant : Idea: Quarks inside hadrons feel a vacuum with ρ=B, p= -B, where B is MIT Bag constant. QCD vacuum in hadrons can be phenomenologically described by the B, to which the gluon condensate contributes
The metric a2(tdi The effective ym field lagrangian 'eff=obF(In 6=2. 11/247 for the group SU(2) r--the renormalization scale of dim m alv (E-B) plays the role of the order parameter of the condensate The pure "electric"case F= E 2021/1/25 10
2021/1/25 10