Zobrazeno 1 - 10
of 12 127
pro vyhledávání: '"Bruck, Or"'
Autor:
Smith, Adam, Mylova, Maria, Brax, Philippe, van de Bruck, Carsten, Burgess, C. P., Davis, Anne-Christine
In scalar-tensor theories it is the two-derivative sigma-model interactions that like to compete at low energies with the two-derivative interactions of General Relativity (GR) $\unicode{x2014}$ at least once the dangerous zero-derivative terms of th
Externí odkaz:
http://arxiv.org/abs/2410.11099
Autor:
Smith, Adam, Mylova, Maria, Brax, Philippe, van de Bruck, Carsten, Burgess, C. P., Davis, Anne-Christine
Axio-dilaton models are among the simplest scalar-tensor theories that contain the two-derivative interactions that naturally compete at low energies with the two-derivative inter-actions of General Relativity. Such models are well-motivated as the l
Externí odkaz:
http://arxiv.org/abs/2408.10820
In any cosmological model where spacetime is described by a pseudo-Riemannian manifold, photons propagate along null geodesics, and their number is conserved, upcoming Gravitational Wave (GW) observations can be combined with measurements of the Bary
Externí odkaz:
http://arxiv.org/abs/2406.07493
Publikováno v:
Phys. Rev. D 110, 043505 (2024)
We perform a detailed dynamical system analysis for the behaviour of a Dirac-Born-Infeld (DBI) field in a spatially closed Friedmann-Lema\^itre-Robertson-Walker (FLRW) cosmology. The DBI field is characterised by a potential and brane tension. We stu
Externí odkaz:
http://arxiv.org/abs/2405.06031
We propose a new model of scalar field dark matter interacting with dark energy. Adopting a fluid description of the dark matter field in the regime of rapid oscillations, we find that the equation of state for dark matter is non-zero and even become
Externí odkaz:
http://arxiv.org/abs/2404.10524
Autor:
Giarè, William, Zhai, Yuejia, Pan, Supriya, Di Valentino, Eleonora, Nunes, Rafael C., van de Bruck, Carsten
We present a comprehensive reassessment of the state of Interacting Dark Energy (IDE) cosmology, namely models featuring a non-gravitational interaction between Dark Matter (DM) and Dark Energy (DE). To achieve high generality, we extend the dark sec
Externí odkaz:
http://arxiv.org/abs/2404.02110
Autor:
Raducan, S. D., Jutzi, M., Cheng, A. F., Zhang, Y., Barnouin, O., Collins, G. S., Daly, R. T., Davison, T. M., Ernst, C. M., Farnham, T. L., Ferrari, F., Hirabayashi, M., Kumamoto, K. M., Michel, P., Murdoch, N., Nakano, R., Pajola, M., Rossi, A., Agrusa, H. F., Barbee, B. W., Syal, M. Bruck, Chabot, N. L., Dotto, E., Fahnestock, E. G., Hasselmann, P. H., Herreros, I., Ivanovski, S., Li, J. -Y., Lucchetti, A., Luther, R., Ormö, J., Owen, M., Pravec, P., Rivkin, A. S., Robin, C. Q., Sánchez, P., Tusberti, F., Wünnemann, K., Zinzi, A., Epifani, E. Mazzotta, Manzoni, C., May, B. H.
On September 26, 2022, NASA's Double Asteroid Redirection Test (DART) mission successfully impacted Dimorphos, the natural satellite of the binary near-Earth asteroid (65803) Didymos. Numerical simulations of the impact provide a means to explore tar
Externí odkaz:
http://arxiv.org/abs/2403.00667
Publikováno v:
JCAP 06 (2024) 036
We present a generalised calculation for the spectrum of primordial tensor perturbations in a cyclic Universe, making no assumptions about the vacuum state of the theory and accounting for the contribution of tensor modes produced in the dark energy
Externí odkaz:
http://arxiv.org/abs/2403.00533
Neural networks successfully capture the computational power of the human brain for many tasks. Similarly inspired by the brain architecture, Nearest Neighbor (NN) representations is a novel approach of computation. We establish a firmer corresponden
Externí odkaz:
http://arxiv.org/abs/2402.08751
The Nearest Neighbor (NN) Representation is an emerging computational model that is inspired by the brain. We study the complexity of representing a neuron (threshold function) using the NN representations. It is known that two anchors (the points to
Externí odkaz:
http://arxiv.org/abs/2402.08748