434 citations
- Universidade Estadual de Campinas (UNICAMP)BR8 papers
- Universidade Federal de São CarlosBR7 papers
- Centre National de la Recherche ScientifiqueFR6 papers
- Institute for High Energy PhysicsES6 papers
- Kyoto UniversityJP6 papers
- Max Planck Institute for the Physics of Complex SystemsDE6 papers
- Brookhaven National LaboratoryUS5 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR5 papers
- Laboratoire de Physique Subatomique et des Technologies AssociéesFR5 papers
- Nantes UniversitéFR5 papers
- Universidade Estadual Paulista (Unesp)BR5 papers
- Universidade Federal de GoiásBR5 papers
19 papers · 1 filter
Looking at the Gregory-Laflamme instability through quasi-normal modes
R. A. Konoplya, Keiju Murata, Jiro Soda +1
We study evolution of gravitational perturbations of black strings. It is well known that for all wavenumber less than some threshold value, the black string is unstable against sc…
Instabilities in Thermal Gravity with a Cosmological Constant
F. T. Brandt, J. Frenkel
It is shown that in quantum gravity at finite temperature, the effective potential evaluated in the tadpole approximation can have a local minimum below a certain critical temperat…
On the ambiguities in the effective action in Lorentz-violating gravity
M. Gomes, T. Mariz, J. R. Nascimento +3
We investigate the occurrence of ambiguities for Lorentz-violating gravitational Chern-Simons term. It turns out that this term is accompanied by a coefficient depending on an unde…
Consistency restrictions on maximal electric field strength in QFT
S. P. Gavrilov, D. M. Gitman
QFT with an external background can be considered as a consistent model only if backreaction is relatively small with respect to the background. To find the corresponding consisten…
Twisted Poincare Invariance, Noncommutative Gauge Theories and UV-IR Mixing
A. P. Balachandran, A. Pinzul, A. R. Queiroz
In the absence of gauge fields, quantum field theories on the Groenewold-Moyal (GM) plane are invariant under a twisted action of the Poincare group if they are formulated followin…
Nilpotent noncommutativity and renormalization
R. Fresneda, D. M. Gitman, D. V. Vassilevich
We analyze renormalizability properties of noncommutative (NC) theories with a bifermionic NC parameter. We introduce a new 4-dimensional scalar field model which is renormalizable…