Controllable binding of polar molecules and meta-stability of 1-D gases with attractive dipole forces

We explore one-dimensional (1-D) samples of ultracold polar molecules with attractive dipole-dipole interactions and show the existence of a repulsive barrier due to a strong quadrupole interaction between molecules. This barrier can stabilize a gas of ultracold KRb molecules and even lead to long-range wells supporting bound states between molecules. The properties of these wells can be controlled by external electric fields, allowing the formation of long polymer-like chains of KRb, and studies of quantum phase transitions by varying the effective interaction between molecules. We discuss the generalization of those results to other systems

Topological Analysis of Chaotic Transport Through a Ballistic Atom Pump

We examine a system consisting of two reservoirs of particles connected by a channel. In the channel are two oscillating repulsive potential-energy barriers. It is known that such a system can transport particles from one reservoir to the other, even when the chemical potentials in the reservoirs are equal. We use computations and the theory of chaotic transport to study this system. Chaotic transport is described by passage around or through a heteroclinic tangle. Topological properties of the tangle are described using a generalization of homotopic lobe dynamics, which is a theory that gives some properties of intermediate-time behavior from properties of short-time behavior. We compare these predicted properties with direct computation of trajectories

A Note on Estimating the Cost of Capital for the Undiversified Business Owner

About 70 percent of businesses are organized as sole proprietorships, and many business owners are not well-diversified, yet the finance discipline is largely silent regarding how to estimate the opportunity cost of capital for undiversified investors. In this paper, the Capital Market Line (CML) is presented as the appropriate vehicle for estimating such an investor’s return requirement. Recognizing the applicability of the CML allows the undiversified investor’s exposure to an investment’s total risk to be objectively linked to the market price of risk. Knowing the appropriate return requirement is useful for valuation and capital budgeting purposes

Business faculty perceptions of authentic leaders: a cross-cultural exploratory study

This study explores the concept of \u201cAuthentic Leadership\u201d from the perspective of Italian and American business school faculty. A convenience sample is utilized and it is exploratory in nature. While there is significant overlap between the cross-cultural respondents concerning the traits of authentic leaders, personal contact and experience has led the two groups to identify different examples of those who exemplify the concept. Additionally, there were differences in the type of advice the two samples would offer to those who aspire to become an authentic leader. Globally, business schools and business school faculty view it as their responsibility to integrate this concept into their teaching and classroom discussions. However, people of diverse cultures may view the construct of authentic leader differently. Consequently, an examination of what business school faculty members believe constitutes an authentic leader generally, and specifically whether those from different cultures view authentic leaders differently is warranted