Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Füzfa, André"'
Publikováno v:
Phys. Rev. D 108, 124009 (2023)
Stochastic gravitational wave background from the early Universe has a cut-off frequency close to 100 MHz, due to the horizon of the inflationary phase. To detect gravitational waves at such frequencies, resonant electromagnetic cavities are very sui
Externí odkaz:
http://arxiv.org/abs/2203.15668
Publikováno v:
Phys. Rev. Research 2, 043186 (2020)
The authors describe the general motion of radiation-pushed sails accelerated near the speed of light with directed energy propulsion. Practical applications of the model are also given, including the interstellar flyby mission to the Alpha Centauri
Externí odkaz:
http://arxiv.org/abs/2007.03530
Current acceleration of the cosmic expansion leads to coincidence as well as fine-tuning issues in the framework of general relativity. Dynamical scalar fields have been introduced in response of these problems, some of them invoking screening mechan
Externí odkaz:
http://arxiv.org/abs/1512.07738
Publikováno v:
Phys. Rev. D 93, 043533 (2016)
We present a study of the fully relativistic spherical collapse in presence of quintessence using on Numerical Relativity, following the method proposed by the authors in a previous article [arXiv:1409.3476]. We ascertain the validity of the method b
Externí odkaz:
http://arxiv.org/abs/1509.08354
Publikováno v:
Phys. Rev. D 93, 104036 (2016)
Refined constraints on chameleon theories are calculated for atom-interferometry experiments, using a numerical approach consisting in solving for a four-region model the static and spherically symmetric Klein-Gordon equation for the chameleon field.
Externí odkaz:
http://arxiv.org/abs/1507.03081
Autor:
Füzfa, André ER
Le mécanisme d'instabilité gravitationnelle d'un champ de Yang-Mills est étudié via l'intégration numérique de la formulation hamiltonienne du système Einstein-Yang-Mills décrivant le couplage d'un champ de jauge à la gravitation. Une évolu
Publikováno v:
Phys. Rev. D 91, 024025 (2015)
We present a fully relativistic numerical method for the study of cosmological problems using the Baumgarte-Shapiro-Shibata-Nakamura formalism on a dynamical Friedmann-Lema\^itre-Robertson-Walker background. This has many potential applications inclu
Externí odkaz:
http://arxiv.org/abs/1409.3476
Publikováno v:
Phys. Rev. D 90, 044056 (2014)
Higgs inflation has received a remarkable attention in the last few years due to its simplicity and predictive power. The key point of this model is the nonminimal coupling to gravity in unitary gauge. As such, this theory is in fact a scalar-tensor
Externí odkaz:
http://arxiv.org/abs/1405.5476