Article on Richard Wallis talk @ Ebooks 2013 conference, UCL. Richard Wallis (formerly Talis; now Tech. evangelist @ OCLC and consultant) – “Linked Data for Ebook Discovery”.

This article is a review of a conference presentation by Richard Wallis about “Linked Data” attended by Gopal Dutta in May 2013. Wallis is advocating a new method of cataloguing which he believes would better enable searching for ebooks. The article may be of interest to anyone who is curious about the intersection between Google, cataloguing and ebooks

Leptoquark explanation of HERA anomaly in the context of gauge unification

We examine the consequences of leptoquark explanation of HERA anomaly in the context of R parity conserving supersymmetric gauge unified theory with the gauge unification scale at $\sim 10^{16}$ GeV. We pointed out the difficulty of constructing a grandunified theory. However gauge unification is still possible at $\sim 10^{16}$ GeV when additional multiplets are introduced. We determine the mass spectrum of these additional fields (fermions and scalars) in gauge mediated and supergravity scenarios. Unique signatures and mass bounds are discussed.Comment: 19 pages(Latex), 1 PS Figur

Two photon quantum interference in plasmonics - Theory and Applications

We report perfect two photon quantum interference with near-unity visibility in a resonant tunneling plasmonic structure in folded Kretschmann geometry. This is despite absorption-induced loss of unitarity in plasmonic systems. The effect is traced to perfect destructive interference between the squares of amplitude reflection and transmission coefficients. We further highlight yet another remarkable potential of coincidence measurements as a probe with better resolution as compared to standard spectroscopic techniques. The finer features show up in both angle resolved and frequency resolved studies.Comment: 5 pages, 6 figure

Giant Radiative Interactions Among Distant Atoms

We examine the feasibility of enhancing the fundamental radiative interactions between distant atoms. We present general arguments for producing enhancement. In particular, we show how giant dipole-dipole interaction can be produced by considering dipoles placed close to micron sized silica spheres. The giant interaction arises as the whispering gallery modes can resonantly couple the dipoles.Comment: 4 figures included in the postscript file, to appear in "Current trens in Atomic and Molecular Physics", edited by R. Srivastava (Phoenix publishing House, New Delhi, India, 2001