 2016

Source paper: www.whatdotheyknow.com/request/oxford_physics_past_papers_2/response/2340696/attach/4/Physics%20Papers%202015.pdf?cookie_passthrough=1. The held cover dates this sitting to 19 April 2016; the annual bundle's filename does not determine the year. We use $d=4-ϵ$ for the ultraviolet regulator, reserving $i0$ for the causal prescription. The supplied propagators correspond to $g=\mathrm{diag}(-,+,+,+)$ and $\{{\gamma }^{\mu },{\gamma }^{\nu }\}=-2g^{\mu \nu }$. Q1 and Q3 are readable. A duplicate cover obscures Q2 on printed page 3; its known a–c scopes retain explicit source-gap TODOs.