scholarly journals Searching for traces of Planck-scale physics with high energy neutrinos

2015 ◽  
Vol 91 (4) ◽  
Author(s):  
Floyd W. Stecker ◽  
Sean T. Scully ◽  
Stefano Liberati ◽  
David Mattingly
Keyword(s):  
Planck Scale ◽  
High Energy ◽  
High Energy Neutrinos ◽  
Planck Scale Physics

scholarly journals SELECTED TOPICS IN PLANCK-SCALE PHYSICS

2003 ◽  
Vol 18 (16) ◽  
pp. 1073-1097 ◽  
Author(s):  
Y. JACK NG
Keyword(s):  
Quantum Gravity ◽  
Gamma Ray ◽  
Planck Scale ◽  
Cosmic Ray ◽  
High Energy ◽  
Low Energy ◽  
Quantum Gravity Phenomenology ◽  
Energy Quantum ◽  
Energy Dependent ◽  
Planck Scale Physics

We review a few topics in Planck-scale physics, with emphasis on possible manifestations in relatively low energy. The selected topics include quantum fluctuations of spacetime, their cumulative effects, uncertainties in energy–momentum measurements, and low energy quantum-gravity phenomenology. The focus is on quantum-gravity-induced uncertainties in some observable quantities. We consider four possible ways to probe Planck-scale physics experimentally: (i) looking for energy-dependent spreads in the arrival time of photons of the same energy from GRBs; (ii) examining spacetime fluctuation-induced phase incoherence of light from extragalactic sources; (iii) detecting spacetime foam with laser-based interferometry techniques; (iv) understanding the threshold anomalies in high energy cosmic ray and gamma ray events. Some other experiments are briefly discussed. We show how some physics behind black holes, simple clocks, simple computers, and the holographic principle is related to Planck-scale physics. We also discuss a formulation of the Dirac equation as a difference equation on a discrete Planck-scale spacetime lattice, and a possible interplay between Planck-scale and Hubble-scale physics encoded in the cosmological constant (dark energy).

scholarly journals Planck Neutrinos as Ultra High Energy Cosmic Rays

2020 ◽  
Vol 29 (1) ◽  
pp. 40-46
Author(s):  
Dmitri L. Khokhlov
Keyword(s):  
Black Holes ◽  
Cosmic Rays ◽  
Standard Model ◽  
Active Galactic Nuclei ◽  
Planck Scale ◽  
Galactic Nuclei ◽  
High Energy ◽  
Ultra High Energy ◽  
High Energy Cosmic Rays ◽  
The Standard Model

AbstractThe studied conjecture is that ultra high energy cosmic rays (UHECRs) are hypothetical Planck neutrinos arising in the decay of the protons falling onto the gravastar. The proton is assumed to decay at the Planck scale into positron and four Planck neutrinos. The supermassive black holes inside active galactic nuclei, while interpreted as gravastars, are considered as UHECR sources. The scattering of the Planck neutrinos by the proton at the Planck scale is considered. The Planck neutrinos contribution to the CR events may explain the CR spectrum from 5 × 1018 eV to 1020 eV. The muon number in the Planck neutrinos-initiated shower is estimated to be larger by a factor of 3/2 in comparison with the standard model that is consistent with the observational data.

scholarly journals A search for the analogue to Cherenkov radiation by high energy neutrinos at superluminal speeds in ICARUS

2012 ◽  
Vol 711 (3-4) ◽  
pp. 270-275 ◽  
Author(s):  
M. Antonello ◽  
P. Aprili ◽  
B. Baibussinov ◽  
M. Baldo Ceolin ◽  
P. Benetti ◽  
...  
Keyword(s):  
Cherenkov Radiation ◽  
High Energy ◽  
High Energy Neutrinos

scholarly journals Recent Results from IceCube

2018 ◽  
Vol 46 ◽  
pp. 1860048 ◽  
Author(s):  
Dawn Williams
Keyword(s):  
Energy Range ◽  
Neutrino Oscillation ◽  
Atmospheric Neutrino ◽  
High Energy ◽  
South Pole ◽  
Neutrino Interactions ◽  
Diffuse Flux ◽  
High Energy Neutrinos

The IceCube Neutrino Observatory is a cubic kilometer detector located at the geographic South Pole. IceCube was designed to detect high-energy neutrinos from cosmic sources, and the DeepCore extension of IceCube enables the study of atmospheric neutrino interactions down to energies of a few GeV. IceCube has detected a diffuse flux of neutrinos in the energy range from 100 TeV to several PeV, the properties of which are inconsistent with an atmospheric origin, and has also published competitive limits on atmospheric neutrino oscillation parameters and other neutrino properties. This paper presents the latest results from IceCube and prospects for future upgrades and expansions of the detector.

Sign in / Sign up

Export Citation Format

Share Document