0 Measurability of the non - minimal scalar coupling constant
نویسنده
چکیده
The ”measurability” of the non-minimal coupling is discussed in the context of the effective field theory of gravity. Although there is no obvious motive for excluding a non-minimal scalar coupling from the theory, we conclude that for reasonable values of the coupling constant it makes only a very small correction. Typeset using REVTEX ∗email: [email protected] †email: [email protected]
منابع مشابه
Metric-scalar gravity with torsion and the measurability of the non-minimal coupling
The “measurability” of the non-minimal coupling is discussed by considering the correction to the Newtonian static potential in the semi-classical approach. The coefficient of the “gravitational Darwin term” (GDT) gets redefined by the non-minimal torsion scalar couplings. Based on a similar analysis of the GDT in the effective field theory approach to non-minimal scalar we conclude that for re...
متن کامل- qc / 9 80 70 66 v 1 2 3 Ju l 1 99 8 Does the non – minimal coupling of the scalar field improve or destroy inflation ? Valerio Faraoni
The non–minimal coupling of a scalar field to the Ricci curvature in a curved spacetime is unavoidable according to several authors. The coupling constant ξ is not a free parameter: the prescriptions for the coupling constant ξ in specific scalar field and gravity theories (in particular in general relativity) are studied. The results are applied to the most popular inflationary scenarios of co...
متن کاملTwo-loop Quantum Corrections of Scalar QED with Non-minimal Chern-Simons Coupling
We investigate two-loop quantum corrections to non-minimally coupled Maxwell-Chern-Simons theory. The non-minimal gauge interaction represents the magnetic moment interaction between the charged scalar and the electromagnetic field. We show that one-loop renormalizability of the theory found in previous work does not survive to two-loop level. However, with an appropriate choice of the non-mini...
متن کاملSinglet scalar dark matter in noncommutative space
In this paper, we examine the singlet scalar dark matter annihilation to becoming the Standard Model particles in the non-commutative space. In the recent decades, many candidates of dark matter have been offered, but our information about the nature of dark matter is still limited. There are such particle candidates as scalar matetr, fermion, boson, gauge boson, etc.; however, they have nei...
متن کاملProperties of light scalar mesons from lattice QCD . UKQCD Collaboration
Lattice QCD with N f = 2 flavours of sea quark is used to explore the spectrum and decay of scalar mesons. We find evidence that the lightest non-singlet scalar meson (a 0) has a mass of 1.01(4) GeV. We determine from the lattice the coupling strength to KK and πη. We compute the leptonic decay constant of the lightest non-singlet scalar meson. We discuss the impact of these lattice results on ...
متن کامل