Massless fields of generic Young symmetry type in AdSd space are analyzed. It is demonstrated that in contrast to massless fields in Minkowski space whose physical degrees of freedom transform in irreps of o(d−2) algebra, AdS massless mixed symmetry fields reduce to a number of irreps of o(d− 2) algebra. From the field theory perspective this means that not every massless field in flat space ad...

Analog gravity models of general relativity seem promising routes to providing laboratory tests of the foundation of quantum field theory in curved space-time. In contrast to general relativity, where geometry of a spacetime is determined by the Einstein equations, in analog models geometry and evolution of analog spacetime are determined by the equations of fluid mechanics. In this paper we st...

We discuss bosonized two-dimensional QCD with massless fermions in the adjoint and multi-flavor fundamental representations. We evaluate the massive mesonic spectra of several models by using the lightfront quantization and diagonalizing the mass operator M2 = 2P+P−. We recover previous results in the case of one flavor adjoint fermions and we find the exact massive spectrum of multi flavor QCD...

We analyze an abelian gauge model in 3 dimensions which includes massless scalar matter fields. By controlling the trace anomalies with a local dilatation Ward identity, we show that, in perturbation theory and within the BPHZL scheme, the Chern-Simons term has no radiative corrections. This implies, in particular, the vanishing of the corresponding β function in the renormalization group equat...

We examine the relation between the damping rate of a massless, chiral fermion that propagates in a medium, and the rate Γ of approach to equilibrium. It is proven that these quantities are equal, by showing that they are given by the same formula in terms of the imaginary part of the self-energy evaluated at the energy of the propagating fermion mode. This result is valid provided Γ is defined...

Earthquake and scouring are the leading causes of bridge failure worldwide, resulting not only in casualties fatalities but also enormous societal economic losses. A great number bridges earthquake-prone countries cross rivers have shallow foundations, which renders them highly vulnerable to combined effects earthquake flood-induced scour. Thus, research on dynamic response with foundations und...