Reflection on “Communication Theory as a Field”

Communication Theory as a Field

This essay reconstructs communication theory as a dialogical-dialectical field according to two principles: the constitutive model of communication as a metamodel and theory as metadiscursive practice. The essay argues that all communication theories are mutually relevant when addressed to a practical lifeworld in which “communication” is already a richly meaningful term. Each tradition of comm...

Free Field Theory as a String Theory?

An approach to systematically implement open-closed string duality for free large N gauge theories is summarised. We show how the relevant closed string moduli space emerges from a reorganisation of the Feynman diagrams contributing to free field correlators. We also indicate why the resulting integrand on moduli space has the right features to be that of a string theory on AdS.

M-Theory as a Holographic Field Theory

We suggest that M-theory could be non-perturbatively equivalent to a local quantum field theory. More precisely, we present a “renormalizable” gauge theory in eleven dimensions, and show that it exhibits various properties expected of quantum M-theory, most notably the holographic principle of ’t Hooft and Susskind. The theory also satisfies Mach’s principle: A macroscopically large space-time ...

A Reflection on Research, Theory, Evidence-based Practice, and Quality Improvement

Boundary Reflection Matrix in Perturbative Quantum Field Theory

We study boundary reflection matrix for the quantum field theory defined on a half line using Feynman’s perturbation theory. The boundary reflection matrix can be extracted directly from the two-point correlation function. This enables us to determine the boundary reflection matrix for affine Toda field theory with the Neumann boundary condition modulo ‘a mysterious factor half’. jideog.kim@dur...