New observations of gamma-rays in 100 TeV energy domain by HAWC and LHAASO, with future follow up by CTA, open new possibilities for understanding of particle acceleration to extreme energies in astronomical sources in our Milky Way galaxy. These sources, dubbed “PeVatrons” (yet to be identified) produce particles with energies up to several Peta-electronVolt, three orders of magnitude higher than those attained in the most powerful human-made accelerator LHC. They can also be responsible for the astrophysical neutrino signal observed by IceCube neutrino telescope.

The observation that neutrinos change flavor during propagation – termed neutrino oscillations - has shown that neutrinos are massive elementary particles with mixings which points to physics beyond the Standard Model and impacts astrophysics and cosmology. While the discovery dates 1998, key questions remain open concerning neutrino properties, how neutrinos change flavor in dense environments and their impact on future observations.
 

RESEARCH THEME: Using the AdS/CFT correspondence to study de Sitter space and Inflation driven at strong coupling.
 
SUBJECT AND NATURE OF PROPOSED WORK: The AdS/CFT correspondence give a new perspective both at strong coupling physics of quantum field theory and the nature of the gravitational interaction. This thesis will deal with  understanding the physics of de Sitter space and its famous problems, namely its realization, the divergences of correlation functions and the backreaction of quantum field theories.