Apel and Bychkov Reply:

Abstract

Apel and Bychkov Reply: In the preceding Comment on our recent Letter [1], Volovik and Yakovenko (VY) claim that our derivation of the Hopf term is questionable and propose an alternative derivation with the same result [2]. In particular, they state that L top k , L top k

Is Davidson a Gricean?

“…He read a preprint of "A Nice Derangement of Epitaphs" in 1984 and concluded that the spirit and tone of that essay marked a new direction in Davidson's thought about the workings of language, a direction which ". 4 This distinction, the distinction between the semanticist and the pragmaticist approaches, is essentially the same distinction made by Peter Strawson in his inaugural lecture at Oxford in 1969. .…”

“…The fi rst to notice this departure was probably Karl-Otto Apel. 3 Apel says that he [Apel] is using "the term semanticist in characterizing his [Davidson's] approach because it seemed to [him] to make up a counterposition to extremely pragmaticist approaches to almost the same problem, as, e.g., the intentionalist approach of Paul Grice." .…”

The Quantum Hall Effect: Novel Excitations And Broken Symmetries

“…It is sensible to inquire if it is possible to make a cheaper charged excitation. This can indeed be done by taking into account the desire of the spins to be locally parallel and producing a smooth topological defect in the spin orientation [46,[50][51][52][53][54][55][56] known as a skyrmion by analogy with related objects in the Skyrme model of nuclear physics [57]. Such an object has the beautiful form exhibited in fig.…”

Electronic correlation in the quantum Hall regime

“…For increasingg g, the classical model becomes less appropriate and the correct excitations can only be found from variational wavefunctions, from a Hartree-Fock variational Ansatz, and from exact diagonalizations with different accuracy [145]. The appropriate generalization of the classical field-theory is a formulation that takes into account quantum fluctuations around the classical solution [150,151].…”

“…The charge, as we have already seen, and statistics of skyrmions agree with those of the corresponding quasiparticles of the Laughlin wavefunction. The n ¼ 1 skyrmions are spin 1=2 fermions and carry charge AEe [150,154]. 2.…”