Field Theory

Using jax to integrate N-body phase space
In this post, we demonstrate using the jax python library to integrate over N-body phases space and compare the performance to pure c++.
Logan A. Morrison
Mar 11, 2022 10 min read Field Theory
Boosting your spectra
This post demonstrates how to boost energies distributions from one frame to another
Logan A. Morrison
Mar 6, 2022 6 min read Field Theory
Evaluating Functional Determinants in a Thermal Field Theory using the Heat-Kernel
In this post, we demonstrate how to evaluate functional determinants of fermionic and bosonic operators using the heat kernel expansion
Logan A. Morrison
Sep 2, 2019 6 min read Field Theory
Effective Potential in a Scalar Field Theory
A presentation of computing the effective potenial and an example of the full calculation in an SO(N) scalar field theory.
Logan A. Morrison
Aug 26, 2019 10 min read Field Theory
Solving the Boltzmann Equation
A demonstration of solving the Boltzmann equation for Dark Matter comoving number density using Julia.
Logan A. Morrison
Aug 25, 2019 6 min read Field Theory, Dark Matter
Temperature Evolution of a Decoupled Dark Sector
In this post, we investigate the evolution of the temperature of a bath of particles which are thermally decoupled to the Standard Model.
Logan A. Morrison
Aug 25, 2019 10 min read Field Theory
Thermal Distribution Functions
An illustration of the equilibrium number, energy, pressure and entropy densities of relativistic thermal particles.
Logan A. Morrison
Aug 21, 2019 14 min read Field Theory
Rutherford Scattering
In this post, we review the classical calcuation of Rutherford scattering and compare with a fully relativistic calculation at tree-level in Quantum Electrodynamics.
Logan A. Morrison
Feb 25, 2018 5 min read Field Theory