Question

What physics is contained in vertex corrections?

Answer 1

If one looks at the interaction of light and a non-zero density of electrons, one can calculate the polarizability Π(q,ω)Π(q,ω) (which is the 00-th component of the dressed photon propagator). This object is related to the dielectric function as ϵ(q,ω)=1−V(q)Π(q,ω)ϵ(q,ω)=1−V(q)Π(q,ω), where V(q)V(q) is the Coulomb potential between the electrons in Fourier space.

The dielectric function contains a lot of physics: by looking at the zeros of the homogeneous dielectric function you can find the plasma frequency and by looking at the static limit you can find the screening length.

Are there similar "easy-to-understand" physical results one can derive from vertex corrections? And what do the real and imaginary part of a particular vertex correction tell us?

Answer 2

Hello Friend....❤️❤️

The answer of u r question is..✌️✌️

WHAT PHYSICS IS CONTAINED IN VERTEX CORRECTIONS..????

Ans:✍️✍️✍️✍️✍️✍️✍️✍️✍️✍️✍️

Physics is contained in vertex corrects.

Reason..

The dielectric function contains a lot of Physics by looking at the zeros of homogenous dielectric function you can find the plasma frequency and looking at the static limit you can find the screening length..

Thank you..⭐️⭐️⭐️