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Report of the Topical Group on Cosmic Probes of Fundamental Physics for for Snowmass 2021
Rana X. Adhikari, Luis A. Anchordoqui, Ke Fang +118
Cosmic Probes of Fundamental Physics take two primary forms: Very high energy particles (cosmic rays, neutrinos, and gamma rays) and gravitational waves. Already today, these probe…
Snowmass2021 Cosmic Frontier White Paper: Fundamental Physics and Beyond the Standard Model
Emanuele Berti, Vitor Cardoso, Zoltán Haiman +6
Gravitational wave detectors are formidable tools to explore strong-field gravity, especially black holes and neutron stars. These compact objects are extraordinarily efficient at…
Systematics of High Temperature Perturbation Theory: The Two-Loop Electron Self-Energy in QED
Emil Mottola, Zsolt Szep
In order to investigate the systematics of the loop expansion in high temperature gauge theories beyond the leading order hard thermal loop (HTL) approximation, we calculate the tw…
Gauge Invariance in 2PI Effective Actions
Emil Mottola
The problem of maintaining gauge invariance in the 2PI formulation of QED is discussed. A modified form of the 2PI effective action is suggested in which Ward identities for extern…
Minijet Initial Conditions For Non-Equilibrium Parton Evolution at RHIC and LHC
Fred Cooper, Emil Mottola, Gouranga C. Nayak
An important ingredient for the non-equilibrium evolution of partons at RHIC and LHC is to have some physically reasonable initial conditions for the single particle phase space di…
The Quantum Vlasov Equation and its Markov Limit
Yuval Kluger, Emil Mottola, Judah M. Eisenberg
The adiabatic particle number in mean field theory obeys a quantum Vlasov equation which is nonlocal in time. For weak, slowly varying electric fields this particle number can be i…