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3.761  Articles
1 of 377 pages  |  10  records  |  more records»
This paper investigates some of the philosophical and conceptual issues raised by the search for a quantum theory of gravity. It is critically discussed whether such a theory is necessary in the first place, and how much would be accomplished if it is eve... see more

In this article, we give a systematic definition of the recently introduced spin foam models for four-dimensional quantum  gravity, reviewing the main results on their semiclassical limit on fixed discretizations.Received: 17 October 2011,  Acce... see more

This paper investigates some of the philosophical and conceptual issues raised by the search for a quantum theory of gravity. It is critically discussed whether such a theory is necessary in the first place, and how much would be accomplished if it is eve... see more

We study one-loop quantum gravity corrections to the standard model Higgs potential V(?)´aV(\phi) \grave{\rm a} la Coleman-Weinberg and examine the stability question of V(?)V(\phi) in the energy region of Planck mass scale, µ?MPl\mu\simeq M_{\rm Pl} (M... see more

The establishment of galvanomagnetics properties inside the atom takes place here, giving sense, on axiomatic form, to a part of these properties. Some concepts are readjusted: quantum gravity is corrected and replaced by its real significance, and the at... see more

We show that in the RN gravitation model, there is no dynamical symmetry breaking effect in the formalism of the Schwinger-Dyson equation (in flat background space-time). A general formula for the second variation of the gravitational action is obtained f... see more

Recently the so-called mimetic gravity approach has been used to obtain corrections to the Friedmann equation of General Relativity similar to the ones present in loop quantum cosmology. In this paper, we propose an alternative way to derive this modified... see more

The time problem is a problem of canonical quantum gravity that has long been known about; it is related to the relativistic invariance and the consequent absence of an explicit time variable in the quantum equations. This fact complicates the interpretat... see more

Within a fundamental quantum theory, in which gravitation is described by magnetic binding of hadron-lepton pairs, the mechanisms responsible to the development of the universe are well understood. The Solar system has been found to be a stable bound stat... see more

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