**Author:**

mohammadzade, Akbar

**Category:**

Research Papers

**Sub-Category:**

Astrophysics

**Date Published:**

November 18, 2020

**Abstract:**

Quantum field theory tries to add gravity to other three fundamental forces as affective theory specially by means of string theory, to result quantum gravity ,then obtaining graviton as the gravity field carrier particle . we decided to analyze introducing this subject and show theoretical and practical difficulties of that . we considered to calculating problem in case emission of graviton , the vacuum permittivity and conductor of matters in gravity fields properties ,for example earth layers effect on its gravity field specially in Newton, Einstein and Birkhoff analysis had not appear and never detected as lensing ;so we list the misunderstandings and basic problems of the existing studies and we conclude the discussion in this note ,that there is no need for entering gravity force to quantum field theory.

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