We present a generally covariant and parity-invariant two-frame field ("zwei-dreibein") action for gravity in three space-time dimensions that propagates two massive spin-2 modes, unitarily, and we use Hamiltonian methods to confirm the absence of unphysical degrees of freedom. We show how zwei-dreibein gravity unifies previous "3D massive gravity" models and extends them, in the context of the...

We derive a closed-form, analytical expression for the spectrum of longwavelength density perturbations in inflationary models with two (or more) inflaton degrees of freedom that is valid in the slow-roll approximation. We illustrate several classes of potentials for which this expression reduces to a simple, algebraic expression.

In single-molecule protein experiments, the observable variables are restricted within a small fraction of the entire degrees of freedom. Therefore, to investigate the physical nature of proteins in detail, we always need to estimate the hidden internal structure referring only to the accessible degrees of freedom. We formulate this problem on the basis of Bayesian inference, which can be appli...

We show that chains of interacting Fibonacci anyons can support a wide variety of collective ground states ranging from extended critical, gapless phases to gapped phases with ground-state degeneracy and quasiparticle excitations. In particular, we generalize the Majumdar-Ghosh Hamiltonian to anyonic degrees of freedom by extending recently studied pairwise anyonic interactions to three-anyon e...

With few exceptions, a solution to any problem will bring new difficulties. These may or may not be worse than the original problem, and one must decide, not between problem and answer, but between degrees of difficulty. Is the new situation really going to be better than the last? This is undoubtedly the situation with the transsexual. It is undeniable that in the majority of cases the treated...

Paul Ricoeur, Critique and Conviction We are not equal within language. There are inabilities. Take now the ability to act. It is greater among people with power. . . . There are degrees of ability, therefore. For example--and we may have to reconcile ourselves with this, including with Hayden White--this marvelous ability to narrate. Because it is universal: everybody has narrated. We are tryi...

We consider a class of Hamiltonian systems with elastic constraints and arbitrary number of degrees of freedom. We establish sufficient conditions for complete hyperbolicity of the system.

We present a study of a Hanbury Brown-Twiss interferometer realized with anyons. Such a device can directly probe entanglement and fractional statistics of initially uncorrelated particles. We calculate Hanbury Brown-Twiss cross correlations of Abelian Laughlin anyons. The correlations we calculate exhibit partial bunching similar to bosons, indicating a substantial statistical transmutation fr...

We are now learning that the Bologna Process impacts American higher education far beyond comparability of degrees. The Bologna Process, with its policy strands that address an array of issues, including, for example, widening participation, student mobility, student centric learning and teaching, and engagement with employers, is addressing issues that confront American higher education. The U...