Higher-Power Coherent and Squeezed States

A closed form expression for the higher-power coherent states (eigenstates of $a^{j}$) is given. The cases j=3,4 are discussed in detail, including the time-evolution of the probability densities. These are compared to the case j=2, the even- and odd-coherent states. We give the extensions to the "effective" displacement-operator, higher-power squeezed states and to the ladder-operator/minimum-uncertainty, higher-power squeezed states. The properties of all these states are discussed.Comment: 23 pages including 9 figures. To be published in Optics Communication

The 2+2-Signature and the 1+1-Matrix-Brane

We discuss different aspects of the 2+2-signature from the point of view of the quatl theory. In particular, we compare two alternative approaches to such a spacetime signature, namely the 1+1-matrix-brane and the 2+2-target spacetime of a string. This analysis also reveals hidden discrete symmetries of the 2+2-brane action associated with the 2+2-dimensional sector of a 2+10-dimensional target background.Comment: 12 pages, Latex, to appear in Mod. Phys. Lett.

Remarks on Weyl invariant p-branes and Dp-branes

A mechanism to find different Weyl invariant p-branes and Dp-branes actions is explained. Our procedure clarifies the Weyl invariance for such systems. Besides, by considering gravity-dilaton effective action in higher dimensions we also derive a Weyl invariant action for p-branes. We argue that this derivation provides a geometrical scenario for the Weyl invariance of p-branes. Our considerations can be extended to the case of super-p-branes.Comment: 18 pages, Late

Analytic Description of the Motion of a Trapped Ion in an Even or Odd Squeezed State

A completely analytic description is given of the motion of a trapped ion which is in either an even or an odd squeezed state. Comparison is made to recent results on the even or odd coherent states, and possible experimental work is discussed.Comment: LaTeX. 9 pages plus 7 figures, include

Qubits and chirotopes

We show that qubit and chirotope concepts are closely related. In fact, we prove that the qubit concept leads to a generalization of the chirotope concept, which we call qubitope. Moreover, we argue that a possible qubitope theory may suggest interesting applications of oriented matroid theory in at least three physical contexts, in which qubits make their appearance, namely string theory, black holes and quantum information.Comment: 11 pages, Late

A Simple Volcano Potential with an Analytic, Zero-Energy, Ground State

We describe a simple volcano potential, which is supersymmetric and has an analytic, zero-energy, ground state. (The KK modes are also analytic.) It is an interior harmonic oscillator potential properly matched to an exterior angular momentum-like tail. Special cases are given to elucidate the physics, which may be intuitively useful in studies of higher-dimensional gravity.Comment: 8 pages, 3 figure

Community-based multicultural counselor preparation as a site of Praxis and social justice

Recent calls in counseling psychology to embrace social justice work and mandates in the field to operationalize multicultural competencies have offered few mature examples of how this work actually looks. This article describes a 35-year-old program in a community-based urban setting which has successfully prepared over 800 counselors while integrating social justice and multicultural competencies into its core curriculum. The authors discuss the impact of the program in terms of multicultural competence, praxis, and social justice agency. The article includes recommendations about challenges that professionals and programs of this nature must negotiate in order to implement a program of this nature effectively