Speed-up through entanglement—many-body effects in neutrino processes

Speed-up through entanglement – many-body effects in neutrino processes

We study a system containing many particles of identical kinematics with a zero range interaction that scatters one from the other, and with the possible exchange of an attribute. Taking an initial condition in which the attribute is asymmetrically distributed in the regions of momentum space occupied by the particles, we study the rate at which it becomes uniformly distributed, through collisi...

High-Energy Neutrino Production through Photopion Processes in Blazars

The measured spectral energy distribution and variability time scale are used to determine the radiation and magneticfield energy densities in the relativistic plasma that forms the gamma-ray emitting jet in the blazar 3C 279. Assuming that protons are accelerated as efficiently as electrons to a maximum energy determined by the size and magnetic field of the emitting region, we calculate the e...

Neutrino effects in two-body electron-capture measurements at GSI

Oscillatory behavior of electron capture rates in the two-body decay D → R+ ν of hydrogen-like ion (D) into recoil ion (R) plus undetected neutrino ν was reported in storage ring single-ion experiments at the GSI laboratory, Darmstadt, for two cases with period ≈ 7 s. Ivanov and Kienle [Phys. Rev. Lett. 103 (2009) 062502] have relegated this period to neutrino masses through neutrino mixing in ...

Gaussian Processes to Speed up Hybrid Monte Carlo for . . .

Long-range and many-body effects in coagulation processes.

We study the problem of diffusing particles which coalesce upon contact. With the aid of a nonperturbative renormalization group, we first analyze the dynamics emerging below the critical dimension two, where strong fluctuations imply anomalously slow decay. Above two dimensions, the long-time, low-density behavior is known to conform with the law of mass action. For this case, we establish an ...