Zobrazeno 1 - 10
of 22 677
pro vyhledávání: '"LEWIS, R."'
High redshift observations of 10$^9$ M$_\odot$ supermassive black holes (SMBHs) at $z \sim7$ and `Little Red Dots' that may host overmassive black holes at $z>4$ suggests the existence of so-called heavy seeds (>1000 M$_\odot$) in the early Universe.
Externí odkaz:
http://arxiv.org/abs/2410.06141
The existence of bound doubly heavy tetraquark states was confirmed by the recent LHCb discovery of the doubly charmed $T_{cc}$, less than 1 MeV below the meson pair threshold. Others states with two heavy (bottom or charm) quarks could also be bound
Externí odkaz:
http://arxiv.org/abs/2409.11477
Autor:
Saavedra-Bastidas, Jorge, Schleicher, Dominik R. G., Klessen, Ralf S., Chon, Sunmyon, Omukai, Kazuyuki, Peters, Thomas, Prole, Lewis R., Reinoso, Bastián, Riaz, Rafeel, Solar, Paulo
Publikováno v:
A&A 690, A186 (2024)
The formation of massive objects via gravitational collapse is relevant both for explaining the origin of the first supermassive black holes and in the context of massive star formation. Here, we analyze simulations of the formation of massive object
Externí odkaz:
http://arxiv.org/abs/2408.01606
We update earlier lattice results for the binding energies of the flavor antitriplet of strong-interaction-stable doubly bottom, $J^P=1^+$ tetraquarks, employing an extended sink construction which produces significantly improved ground-state effecti
Externí odkaz:
http://arxiv.org/abs/2407.08816
Autor:
Picard, Lewis R. B., Park, Annie J., Patenotte, Gabriel E., Gebretsadkan, Samuel, Wellnitz, David, Rey, Ana Maria, Ni, Kang-Kuen
Quantum computation (QC) and simulation rely on long-lived qubits with controllable interactions. Early work in quantum computing made use of molecules because of their readily available intramolecular nuclear spin coupling and chemical shifts, along
Externí odkaz:
http://arxiv.org/abs/2406.15345
Autor:
Picard, Lewis R. B., Patenotte, Gabriel E., Park, Annie J., Gebretsadkan, Samuel F., Ni, Kang-Kuen
Polar molecules are a quantum resource with rich internal structure that can be coherently controlled. The structure, however, also makes the state preparation and measurement (SPAM) of molecules challenging. We advance the SPAM of individual molecul
Externí odkaz:
http://arxiv.org/abs/2401.13659
Autor:
Prole, Lewis R., Regan, John A., Glover, Simon C. O., Klessen, Ralf S., Priestley, Felix D., Clark, Paul C.
Halos with masses in excess of the atomic limit are believed to be ideal environments in which to form heavy black hole seeds with masses above 10^3 Msun. In cases where the H_2 fraction is suppressed this is expected to lead to reduced fragmentation
Externí odkaz:
http://arxiv.org/abs/2312.06769
Advanced primordial chemistry networks have been developed to model the collapse of metal-free baryonic gas within the gravitational well of dark matter (DM) halos and its subsequent collapse into Population III stars. At the low densities of 10^-26-
Externí odkaz:
http://arxiv.org/abs/2310.10730