It seems that only physicists who speak in Hindi are willing to do that. Whereas the English...

https://arxiv.org/pdf/physics/0608108.pdf
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The self-energy is the energy that an electron in free space, isolated from other particles, fields, or light quanta, possesses. In the classical theory it posed no problem, but after the development of quantum theory, it became a critical problem for theoretical physics. "

**Photon self-energy in a magnetized chiral plasma from kinetic theory**
https://journals.aps.org/prd/pdf/10.1103/PhysRevD.102.014011
**Quark self-energy**
https://www.osti.gov/biblio/4018120
**Real-time hard-thermal-loop gluon self-energy in a semiquark-gluon plasma**
https://arxiv.org/abs/2207.06039
The resulting infinities were a problem to eliminate, requiring "renormalization".

https://arxiv.org/pdf/physics/0608108.pdf
https://www.jstor.org/stable/24313453
https://en.wikipedia.org/wiki/Self-energy
https://en.wikipedia.org/wiki/Feynman_diagram
https://en.wikipedia.org/wiki/Landau_pole
https://en.wikipedia.org/wiki/Renormalization
EXCERPTS: The self-energy is the energy that an electron in free space, isolated from other particles, fields, or light quanta, possesses. In the classical theory it posed no problem, but after the development of quantum theory, it became a critical problem for theoretical physics.

[...] It has been recognized since about 1916 that such a quantity as the self-energy must exist.

**The problem arose from the fact that attempts to calculate it by conventional methods yielded infinite results.** Until recently, however, the self-energy never manifested itself in any observable manner and hence could be ignored in calculations of real processes.

[...] the self-energy is pictorially (and economically) represented by means of Feynman diagrams.

[...] The naïve application of such calculations often produces [Feynman] diagrams

**whose amplitudes are infinite**, because the short-distance particle interactions require a careful limiting procedure, to include particle self-interactions. The technique of renormalization ... compensates for this effect and eliminates the troublesome infinities. After

**renormalization**, calculations using Feynman diagrams match experimental results with very high accuracy.

[...] The question is resolved using quantum field theory by 'summing' all the contributions due to this self-interaction and absorbing the infinite part into a redefinition of the electron wave-function and mass. This redefinition is called

**renormalization**.

[...] In physics, the Landau pole (or the Moscow zero, or the Landau ghost) is the momentum (or energy) scale at which the coupling constant (interaction strength) of a quantum field theory becomes infinite.

[...] Another important critic was Feynman. Despite his crucial role in the development of quantum electrodynamics, he wrote the following in 1985:

"The shell game that we play is technically called '**renormalization**'. But no matter how clever the word, it is still what I would call a dippy process! Having to resort to such hocus-pocus has prevented us from proving that the theory of quantum electrodynamics is mathematically self-consistent. It's surprising that the theory still hasn't been proved self-consistent one way or the other by now; I suspect that renormalization is not mathematically legitimate."

Feynman was concerned that all field theories known in the 1960s had the property that the interactions become infinitely strong at short enough distance scales. This property called a Landau pole, made it plausible that quantum field theories were all inconsistent. In 1974, Gross, Politzer and Wilczek showed that another quantum field theory, quantum chromodynamics, does not have a Landau pole. Feynman, along with most others, accepted that QCD was a fully consistent theory.

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**Inﬁnities and Renormalization **
https://phys.libretexts.org/Bookshelves/Nuclear_and_Particle_Physics/Book:_Nuclear_and_Particle_Physics_(Walet)/05:_Basic_Concepts_of_Theoretical_Particle_Physics/5.05:_Inﬁnities_and_Renormalization
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One of the key features missing in the discussion above is the fact that **all the pictures I have drawn are infinite** – somewhat of a severe blow. The key point is to understand that this is not a problem, but has to do with a misinterpretation of the series. [...] What it means is that we should try to express all our answers in physically sensible (measurable) quantities. **Renormalisation is the mathematical procedure that does this.** A theory (such as QED) is called renormalisable if we can make all expressions finite by re-expressing them in a finite number of physical parameters."

**Renormalization**
https://phys.libretexts.org/Bookshe...d_Cosmology)/Cosmology/Carlip/Renormalization
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