Scalar charges and scaling relations in massless scalar–tensor theories
نویسندگان
چکیده
منابع مشابه
Conserved charges in gravitational theories: contribution from scalar fields
In order to illustrate a recently derived covariant formalism for computing asymptotic symmetries and asymptotically conserved superpotentials in gauge theories, the case of gravity with minimally coupled scalar fields is considered and the matter contribution to the asymptotically conserved superpotentials is computed. ∗Research Associate of the Belgium National Fund for Scientific Research.
متن کاملCharges in Gauge Theories
Recent progress in the construction of both electric, coloured and magnetic charges in gauge theories will be presented. The topological properties of the charged sectors will be highlighted as well as the applications of this work to confinement and infrared dynamics.
متن کاملMassive or Massless Scalar Field and Confinement
Generalization of QCD motivated classical SU(2) Yang–Mills theory coupled to the scalar field is discussed. The massive scalar field, corresponding the scalar glueball, provides a confining potential for static, point–like, external sources. In case of massless scalar field screening solutions are found. However, there is a confining sector as well. Both, massive and massless confining solution...
متن کاملMassless fields in scalar-tensor cosmologies.
We derive exact Friedmann–Robertson–Walker cosmological solutions in general scalar–tensor gravity theories, including Brans–Dicke gravity, for stiff matter or radiation. These correspond to the long or short wavelength modes respectively of massless scalar fields. If present, the long wavelength modes of such fields would be expected to dominate the energy density of the universe at early time...
متن کاملScaling relations in dynamical evolution of star clusters
We have carried out a series of small scale collisional N-body calculations of single-mass star clusters to investigate the dependence of the lifetime of star clusters on their initial parameters. Our models move through an external galaxy potential with a logarithmic density profile and they are limited by a cut-off radius. In order to find scaling relations between the lifetime of star cluste...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2019
ISSN: 0264-9381,1361-6382
DOI: 10.1088/1361-6382/ab2eda