Lebed A. Breakdown of Einstein's Equivalence Principle 2023

Textbook in PDF format

An equality between inertial and gravitational masses was established by Galileo Galilei more than 400 years ago and was accepted by Albert Einstein as a key point of his theory of gravitation — General Relativity.
Preface
Breakdown of the Einstein’s Equivalence Principle for a Quantum Body
Probing Unruh Radiation and the Equivalence Principle with Unruh–DeWitt Detectors
Gravity at Finite Temperature, Equivalence Principle, and Local Lorentz Invariance
An Information Theoretic Approach to the Weak Equivalence Principle
A Critical Discussion on Equivalence Principle in Theories of Gravity