Isolated quantum heat engine

We present a theoretical and numerical analysis of a quantum system that is capable of functioning as a heat engine. This system could be realized experimentally using cold bosonic atoms confined to a double well potential that is created by splitting a harmonic trap with a focused laser. The system shows thermalization, and can model a reversible heat engine cycle. This is the first demonstration of the operation of a heat engine with a finite quantum heat bath.Comment: 4 pages, 4 figure

Solvation Effects on Hole Mobility in the Poly G/Poly C Duplex

Theoretical calculations of solvation contribution to hole energy in a polynucleotide chain give very low hole mobility values at zero temperature, \mu < 10^{-3} cm^2/(V s). We calculated hole mobility at physiological temperature for the Poly G/Poly C DNA duplex, which gave substantially larger mobility values. Mobility over the temperature range 20-400 K was calculated. Taking stacking interaction into account substantially increased hole mobility

The Role of Source Trust in Priming

In a classic experiment, Srull and Wyer (1979) showed that when participants were incidentally exposed to a number of words related to a trait (e.g., hostility), their subsequent judgments of a target person were influenced by these primes. Recent work in social cognition, however, has shown that the use of accessible information can often be affected by cues to validity (e.g., Loersch & Payne, 2009). In the current research, we explored whether the attributional cue of trustworthiness could affect the impact of trait primes. The design of the study was a 2 (prime: hostile vs. kind) x 2 (source: trustworthy vs. untrustworthy). To test the hypothesis, participants read a paragraph about a fictional person written by either a trustworthy or untrustworthy source. While reading this information, participants were subliminally primed with one of two trait concepts. Then, participants made judgments about the fictional person’s traits. The results showed that trait priming interacted with source trust to affect participants’ subsequent judgments.No embarg

Anderson localization in a correlated fermionic mixture

A mixture of two fermionic species with different masses is studied in an optical lattice. The heavy fermions are subject only to thermal fluctuations, the light fermions also to quantum fluctuations. We derive the Ising-like distribution for the heavy atoms and study the localization properties of the light fermions numerically by a transfer-matrix method. In a two-dimensional system one-parameter scaling of the localization length is found with a transition from delocalized states at low temperatures to localized states at high temperature. The critical exponent of the localization length is $\nu\approx 0.88$.Comment: 5 pages, 4 figure

Scythian female warriors in the south of Eastern Europe

The article is devoted to the funerary complexes of Scythian female warriors in the territory of the European Scythia. Types and sizes of graves, as well as the nature of the funeral rite of Amazons correspond to Scythian canons and de facto do not differ from men’s graves The analysis of the funerary inventory allows us to date them within the second half of the 7th till the 2nd centuries BC

Nucleation in finite topological systems during continuous metastable quantum phase transitions

Finite topological quantum systems can undergo continuous metastable quantum phase transitions to change their topological nature. Here we show how to nucleate the transition between ring currents and dark soliton states in a toroidally trapped Bose-Einstein condensate. An adiabatic passage to wind and unwind its phase is achieved by explicit global breaking of the rotational symmetry. This could be realized with current experimental technology.Comment: 5 pages, 3 figure