Renormalized perturbation theory for QFTs typically produces
divergent series, even when the coupling constant is small, because
the series coefficients grow factorially at high order. So in what
sense do such divergent series capture the physics...
In recent years we have come to appreciate that the microscopic
dynamics of quantum field theory leave behind indelible signatures
in long range, near-equilibrium phenomena. We will describe an
effective field theory which captures some of these...
In this talk I study the one loop effective action for a class
of higher spin fields by using a first-quantized description. The
latter is obtained by considering spinning particles, characterized
by an extended local supersymmetry on the worldline...
Regge theory is the idea that physical observable in quantum theory
can be defined for complex angular momentum. Its main result is the
possibility to analyze an amplitude in one channel, in terms of the
states exchanged in another channel, in...
