5 problems

Let $x\in\mathbb{R}^{1+3}$ denote the spacetime variable and let $e\in H$ denote a spacelike string direction, where $H$ is the open subset of spacelike vectors. String-localized f…

Let $H\subset\mathbb{R}^{1+3}$ be the open subset of spacelike vectors in Minkowski space, and let $A_{\mu_1\cdots\mu_s}(x,e)$ be the string-localized potential obtained by integra…

Consider a massive QED model whose interaction Lagrangian is $j^\mu(x)A_\mu(x,e)$, where $j^\mu(x)$ is the current and $A_\mu(x,e)$ is a string-localized field. Let the large point…

Let $L^{\mathrm{p}}$ be a point-localized Lagrangian and let the corresponding string-localized Lagrangian differ from it by a divergence. Assume that the required string-independe…

The discussion concerns conserved energy–momentum tensors $T_{bcu}$ associated with a massive higher-spin field and their point-localized (pl) and string-localized (sl) forms, wher…