Bi-galileon theory I: motivation and formulation

Classical Hair in String Theory I: General Formulation

We discuss why classical hair is desirable for the description of black holes, and show that it arises generically in a wide class of field theories involving extra dimensions. We develop the canonical formalism for theories with the matter content that arises in string theory. General covariance and duality are used to determine the form of surface terms. We derive an effective theory (reduced...

Microscopic theory of singlet exciton fission. I. General formulation.

Singlet fission, a spin-allowed energy transfer process generating two triplet excitons from one singlet exciton, has the potential to dramatically increase the efficiency of organic solar cells. However, the dynamical mechanism of this phenomenon is not fully understood and a complete, microscopic theory of singlet fission is lacking. In this work, we assemble the components of a comprehensive...

Bi-Hamiltonian Formulation of Generalized Toda Chains

In this paper we establish for the first time the bi-Hamiltonian nature of the Toda lattices corresponding to classical simple Lie groups. These are systems that generalize the usual finite, non-periodic Toda lattice (which corresponds to a root system of type An). This generalization is due to Bogoyavlensky [2]. These systems were studied extensively in [10] where the solution of the system wa...

I.1. Physical motivation.

I. Introduction & Motivation

I.1. Physical motivation. From [St]: consider a function T (x) as representing the value of a physical variable at a particular point x in space. Is this a realistic thing to do? What can you measure? Suppose T (x) represents temperature at a point x in a room. You can measure the temperature with a thermometer, placing the bulb at the point x. Unlike the point, the bulb has nonzero size, so wh...