Fundamental Problems in Quantum Field Theory


Takehisa Fujita, Naohiro Kanda

DOI: 10.2174/97816080575591130101
eISBN: 978-1-60805-754-2, 2013
ISBN: 978-1-60805-755-9

Indexed in: EBSCO.

Quantum physics is based on four fundamental interactions of electromagnetic, weak, gravitational and strong forces. All t...[view complete introduction]
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- Pp. 99-120 (22)

Takehisa Fujita and Naohiro Kanda


In this chapter, we present the new model of the quantum field theory of gravitation which is, by now, properly included into the Lagrangian density of quantum electrodynamics. In this model of QED plus gravity, Dirac fields couple to the electromagnetic field A<sup>μ</sup> as well as the gravitational field G. The gravity appears in the mass term as m(1 + gG)ψψ with the coupling constant of g, thus keeping the local gauge invariance of the total Lagrangian of QED plus gravity. Here, after a brief review of the new gravity model, we present the discussion of applying the new gravity model to the time shifts of various kinds of planet motions.

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