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60 papers · 1 filter
Noncommutative Quantum Cosmology
C. Bastos, O. Bertolami, N. Dias +1
One presents a phase-space noncommutative extension of Quantum Cosmology in the context of a Kantowski-Sachs (KS) minisuperspace model. We obtain the Wheeler-DeWitt (WDW) equation…
A geometric approach to Conn's linearization theorem
Marius Crainic, Rui Loja Fernandes
We give a soft geometric proof of the classical result due to Conn stating that a Poisson structure is linearizable around a singular point (zero) at which the isotropy Lie algebra…
Spectroscopy of the unbound: One-neutron knockout reaction of Be
R. Crespo, A. Deltuva, M. Rodríguez-Gallardo +2
Full Faddeev-type calculations are performed for one-neutron knockout reaction of Be on proton target at 69 MeV/u incident energy. Inclusive transverse momentum distribution…
D-state effects in the electromagnetic N-Delta transition
G. Ramalho, M. T. Pena, Franz Gross
We consider here a manifestly covariant quark model of the nucleon and the Delta, where one quark is off-shell and the other two quarks form an on-shell diquark pair. Using this mo…
The mass formula for quasi-black holes
José P. S. Lemos, Oleg B. Zaslavskii
A quasi-black hole, either non-extremal or extremal, can be broadly defined as the limiting configuration of a body when its boundary approaches the body's quasihorizon. We conside…
Measuring Lepton Flavour Violation at LHC with Long-Lived Slepton in the Coannihilation Region
Satoru Kaneko, Joe Sato, Takashi Shimomura +2
When the mass difference between the lightest slepton, the NLSP, and the lightest neutralino, the LSP, is smaller than the tau mass, the lifetime of the lightest slepton increases…